Science and Principles of Biodegradable and Bioresorbable Medical Polymers

3D Melt-Extrusion Printing of Medium Chain Length Polyhydroxyalkanoates and Their Application as Antibiotic-Free Antibacterial Scaffolds for Bone Regeneration
Marcello, E., Nigmatullin, R., Basnett, Pooja, Maqbool, Muhammad, Prieto, M., Knowles, J.C., Boccaccini, A. and Roy, I. 2024. 3D Melt-Extrusion Printing of Medium Chain Length Polyhydroxyalkanoates and Their Application as Antibiotic-Free Antibacterial Scaffolds for Bone Regeneration. ACS Biomaterials Science & Engineering. https://doi.org/10.1021/acsbiomaterials.4c00624

The Cavendish Living lab - a multidisciplinary, vertically integrated project focused on sustainability
Basnett, P., Percy, L., Sengupta, D. and Smith, C.L. 2023. The Cavendish Living lab - a multidisciplinary, vertically integrated project focused on sustainability. Westminster Learning and Teaching Symposium 2023: Better Than the Real Thing? Exploring Education Futures at the University of Westminster. University of Westminster 04 Sep 2023

Aligned Polyhydroxyalkanoate Blend Electrospun Fibers as Intraluminal Guidance Scaffolds for Peripheral Nerve Repair
Taylor, C., Behbehani, Mehri, Glen, Adam, Basnett, Pooja, Gregory, D., Lukasiewicz, Barbara B., Nigmatullin, R., Claeyssens, F., Roy, Ipsita and Haycock, John W. 2023. Aligned Polyhydroxyalkanoate Blend Electrospun Fibers as Intraluminal Guidance Scaffolds for Peripheral Nerve Repair. ACS Biomaterials Science & Engineering. 9 (3), pp. 1472-1485. https://doi.org/10.1021/acsbiomaterials.2c00964

Enhanced production of biobased, biodegradable, Poly(3-hydroxybutyrate) using an unexplored marine bacterium Pseudohalocynthiibacter aestuariivivens, isolated from highly polluted coastal environment.
Esposito, Fortunato Palma, Vecchiato, Vittoria, Buonocore, Carmine, Tedesco, Pietro, Noble, Brendon, Basnett, Pooja and de Pascale, Donatella 2023. Enhanced production of biobased, biodegradable, Poly(3-hydroxybutyrate) using an unexplored marine bacterium Pseudohalocynthiibacter aestuariivivens, isolated from highly polluted coastal environment. Bioresource Technology. 368, p. 128287. https://doi.org/10.1016/j.biortech.2022.128287

3D Disease Modelling of Hard and Soft Cancer Using PHA-Based Scaffolds
Tomar, A., Uysal-Onganer, P., Basnett, P., Pati, U. and Roy, I. 2022. 3D Disease Modelling of Hard and Soft Cancer Using PHA-Based Scaffolds. Cancers. 14 (14) e3549. https://doi.org/10.3390/cancers14143549

Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres.
Ahmed, D., Puthussery, Hima, Basnett, Pooja, Knowles, J., Lange, S. and Roy, I. 2021. Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres. International Journal of Molecular Sciences. 22 (23) 12852. https://doi.org/10.3390/ijms222312852

Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres
Ahmed, D., Puthussery, H., Basnett, P., Knowles, J., Lange, S. and Roy, I. 2021. Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres. International Journal of Molecular Sciences. 22 (23) e12852. https://doi.org/10.3390/ijms222312852

Silver Nanoparticle-Coated Polyhydroxyalkanoate Based Electrospun Fibers for Wound Dressing Applications.
Kalaoglu-Altan, Ozlem Ipek, Baskan, Havva, Meireman, Timo, Basnett, Pooja, Azimi, Bahareh, Fusco, A., Funel, N., Donnarumma, G., Lazzeri, A., Roy, I., Danti, S. and De Clerck, K. 2021. Silver Nanoparticle-Coated Polyhydroxyalkanoate Based Electrospun Fibers for Wound Dressing Applications. Materials. 14 (17) 4907. https://doi.org/10.3390/ma14174907

Harnessing Polyhydroxyalkanoates and Pressurized Gyration for Hard and Soft Tissue Engineering
Basnett, P., Matharu, R.K., Taylor, C.S., Illangakoon, U., Dawson, J.I., Kanczler, J.M., Behbehani, M., Humphrey, E., Majid, Q., Lukasiewicz, B., Nigmatullin, R., Haseltine, P., Oreffo, R.O.C., Haycock, J.W., Terracciano, C., Harding, S.E., Edirisinghe, M. and Roy, I. 2021. Harnessing Polyhydroxyalkanoates and Pressurized Gyration for Hard and Soft Tissue Engineering. ACS Applied Materials & Interfaces. 13 (28), p. 32624–32639. https://doi.org/10.1021/acsami.0c19689

Preclinical study of peripheral nerve regeneration using nerve guidance conduits based on polyhydroxyalkanaotes
Lizarraga Valderrama, L., Ronchi, Giulia, Nigmatullin, Rinat, Fregnan, Federica, Basnett, Pooja, Paxinou, Alexandra, Geuna, Stefano and Roy, I. 2021. Preclinical study of peripheral nerve regeneration using nerve guidance conduits based on polyhydroxyalkanaotes. Bioengineering & Translational Medicine. 6 (3) e10223. https://doi.org/10.1002/btm2.10223

Bioresorbable and Mechanically Optimized Nerve Guidance Conduit Based on a Naturally Derived Medium Chain Length Polyhydroxyalkanoate and Poly(ε-Caprolactone) Blend
Mendibil, Xabier, González-Pérez, Francisco, Bazan, Xabier, Díez-Ahedo, Ruth, Quintana, Iban, Rodríguez, Francisco Javier, Basnett, Pooja, Nigmatullin, Rinat, Lukasiewicz, Barbara, Roy, Ipsita, Taylor, Caroline S., Glen, Adam, Claeyssens, F., Haycock, John W., Schaafsma, Wandert, González, Eva, Castro, Begoña, Duffy, Patrick and Merino, S. 2021. Bioresorbable and Mechanically Optimized Nerve Guidance Conduit Based on a Naturally Derived Medium Chain Length Polyhydroxyalkanoate and Poly(ε-Caprolactone) Blend. ACS Biomaterials Science & Engineering. 7 (2), pp. 672-689. https://doi.org/10.1021/acsbiomaterials.0c01476

Antibacterial Composite Materials Based on the Combination of Polyhydroxyalkanoates With Selenium and Strontium Co-substituted Hydroxyapatite for Bone Regeneration
Marcello, Elena, Maqbool, Muhammad, Nigmatullin, Rinat, Cresswell, Mark, Jackson, Philip R., Basnett, Pooja, Knowles, Jonathan C., Boccaccini, Aldo R. and Roy, I. 2021. Antibacterial Composite Materials Based on the Combination of Polyhydroxyalkanoates With Selenium and Strontium Co-substituted Hydroxyapatite for Bone Regeneration. Frontiers in Bioengineering and Biotechnology. 9 647007. https://doi.org/10.3389/fbioe.2021.647007

Natural Biomaterials for Cardiac Tissue Engineering: A Highly Biocompatible Solution
Majid, Qasim A., Fricker, Annabelle T. R., Gregory, David A., Davidenko, Natalia, Hernandez Cruz, Olivia, Jabbour, Richard J., Owen, Thomas J., Basnett, Pooja, Lukasiewicz, Barbara, Stevens, Molly, Best, Serena, Cameron, Ruth, Sinha, Sanjay, Harding, Sian E. and Roy, Ipsita 2020. Natural Biomaterials for Cardiac Tissue Engineering: A Highly Biocompatible Solution. Frontiers in Cardiovascular Medicine. 7 554597. https://doi.org/10.3389/fcvm.2020.554597

Chemical Modification of Bacterial Cellulose for the Development of an Antibacterial Wound Dressing
Orlando, I., Basnett, P., Nigmatullin, R., Wang, W., Knowles, J. and Roy, I. 2020. Chemical Modification of Bacterial Cellulose for the Development of an Antibacterial Wound Dressing. Frontiers in Bioengineering and Biotechnology. 8 557885. https://doi.org/10.3389/fbioe.2020.557885

Electrosprayed Chitin Nanofibril/Electrospun Polyhydroxyalkanoate Fiber Mesh as Functional Nonwoven for Skin Application
Azimi, Bahareh, Thomas, Lily, Fusco, A., Kalaoglu-Altan, Ozlem Ipek, Basnett, P., Cinelli, P., De Clerck, Karen, Roy, I., Donnarumma, G., Coltelli, M., Danti, S. and Lazzeri, A. 2020. Electrosprayed Chitin Nanofibril/Electrospun Polyhydroxyalkanoate Fiber Mesh as Functional Nonwoven for Skin Application. Journal of Functional Biomaterials. 11 (3), p. e62. https://doi.org/10.3390/jfb11030062

Toward a Closed Loop, Integrated Biocompatible Biopolymer Wound Dressing Patch for Detection and Prevention of Chronic Wound Infections
Ward, A., Dubey, P., Basnett, P., Lika, G., Newman, G., Corrigan, D., Russell, C., Kim, J., Chakrabarty, S., Connolly, P. and Roy, I. 2020. Toward a Closed Loop, Integrated Biocompatible Biopolymer Wound Dressing Patch for Detection and Prevention of Chronic Wound Infections. Frontiers in Bioengineering and Biotechnology. 8 1039. https://doi.org/10.3389/fbioe.2020.01039

Cytocompatibility Evaluation of a Novel Series of PEG-Functionalized Lactide-Caprolactone Copolymer Biomaterials for Cardiovascular Applications
Pacharra, S., McMahon, S., Duffy, P., Basnett, P., Yu, W., Seisel, S., Stervbo, U., Babel, N., Roy, I., Viebahn, R., Wang, W. and Salber, J. 2020. Cytocompatibility Evaluation of a Novel Series of PEG-Functionalized Lactide-Caprolactone Copolymer Biomaterials for Cardiovascular Applications. Frontiers in Bioengineering and Biotechnology. 8 991. https://doi.org/10.3389/fbioe.2020.00991

Comparison of the Influence of 45S5 and Cu-Containing 45S5 Bioactive Glass (BG) on the Biological Properties of Novel Polyhydroxyalkanoate (PHA)/BG Composites
Schuhladen, K., Lukasiewicz, B., Basnett, P., Roy, I. and Boccaccini, A.R. 2020. Comparison of the Influence of 45S5 and Cu-Containing 45S5 Bioactive Glass (BG) on the Biological Properties of Novel Polyhydroxyalkanoate (PHA)/BG Composites. Materials. 13 (11) 2607. https://doi.org/10.3390/ma13112607

Antimicrobial Materials with Lime Oil and a Poly (3-hydroxyalkanoate) Produced via Valorisation of Sugar Cane Molasses
Basnett, P., Marcello, E., Lukasiewicz, B., Nigmatullin, R., Paxinou, A., Ahmad, M.A., Gurumayum , B. and Roy, I. 2020. Antimicrobial Materials with Lime Oil and a Poly (3-hydroxyalkanoate) Produced via Valorisation of Sugar Cane Molasses. Journal of Functional Biomaterials. 11 (2) 24. https://doi.org/10.3390/jfb11020024

Populated Collagen Hydrogel and Polyhydroxyalkanoate Composites: Novel Matrices for Cartilage Repair and Regeneration?
De Pascale, C., Marcello, E., Getting, S.J., Roy, I. and Locke, I.C. Forthcoming. Populated Collagen Hydrogel and Polyhydroxyalkanoate Composites: Novel Matrices for Cartilage Repair and Regeneration? OARSI World Congress on Osteoarthritis . Toronto, Canada 02 Mar - 05 May 2019

Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response
Ortiz, R, Basnett, P., Roy, I. and Quintana, I. 2019. Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response. e-Polymers. 12 (1) 127. https://doi.org/10.3390/polym12010127

Unidirectional Neuronal Cell growth and Differentiation on Aligned Polyhydroxyalkanoate Blend Microfibres with Varying Diameters
Lizarraga Valderrama, L., Taylor, C.S., Claeyssens, F., Haycock, J.W., Knowles, J.C. and Roy, I. 2019. Unidirectional Neuronal Cell growth and Differentiation on Aligned Polyhydroxyalkanoate Blend Microfibres with Varying Diameters. Journal of Tissue Engineering and Regenerative Medicine. 13 (3), pp. 1581-1594. https://doi.org/10.1002/term.2911

Esterase Cleavable 2D Assemblies of Magnetic Iron Oxide Nanocubes: Exploiting Enzymatic Polymer Disassembling to Improve Magnetic Hyperthermia Heat Losses
Avugadda, S.K., Materia, M.E., Nigmatullin, R., Cabrera, D., Marotta, R., Cabada, T.F., Marcello, E., Nitti, S., Artés-Ibañez, E.J., Basnett, P., Wilhelm, C., Teran, F.J., Roy, I. and Pellegrino, T. 2019. Esterase Cleavable 2D Assemblies of Magnetic Iron Oxide Nanocubes: Exploiting Enzymatic Polymer Disassembling to Improve Magnetic Hyperthermia Heat Losses. Chemistry of Materials. 31 (15), pp. 5450-5463. https://doi.org/10.1021/acs.chemmater.9b00728

A Sustainable Approach for the Downstream Processing of Bacterial Polyhydroxyalkanoates: State-of-the-art and latest developments
Perez Rivero, C., López-Gómez, J.P. and Roy, I. 2019. A Sustainable Approach for the Downstream Processing of Bacterial Polyhydroxyalkanoates: State-of-the-art and latest developments. Biochemical Engineering Journal. 150, p. 107283 107283. https://doi.org/10.1016/j.bej.2019.107283

Cellulose-based hydrogels for wound healing
Orlando, I. and Roy, I. 2019. Cellulose-based hydrogels for wound healing. in: Mondal, Md. and Ibrahim H. (ed.) Cellulose-Based Superabsorbent Hydrogels Springer. pp. 1131-1148

Biosynthesis and characterization of a novel, biocompatible medium chain length polyhydroxyalkanoate by Pseudomonas mendocina CH50 using coconut oil as the carbon source
Basnett, P., Marcello, E., Lukasiewicz, B., Panchal, B., Nigmatullin, R., Knowles, J.C. and Roy, I. 2018. Biosynthesis and characterization of a novel, biocompatible medium chain length polyhydroxyalkanoate by Pseudomonas mendocina CH50 using coconut oil as the carbon source. Journal of Materials Science: Materials in Medicine. 29, p. 179 179. https://doi.org/10.1007/s10856-018-6183-9

In Vivo Tracking and 1H/19F Magnetic Resonance Imaging of Biodegradable Polyhydroxyalkanoate / Polycaprolactone Blend Scaffolds Seeded with Labeled Cardiac Stem Cells
Constantinides, C., Basnett, P., Lukasiewicz, B., Carnicer, R., Swider, E., Majid, Q.A., Srinivas, M., Carr, C.A. and Roy, I. 2018. In Vivo Tracking and 1H/19F Magnetic Resonance Imaging of Biodegradable Polyhydroxyalkanoate / Polycaprolactone Blend Scaffolds Seeded with Labeled Cardiac Stem Cells. ACS Applied Materials and Interfaces. 10 (30), p. 25056–25068. https://doi.org/10.1021/acsami.8b06096

Aligned nanofibres made of poly(3-hydroxybutyrate) grafted to hyaluronan for potential healthcare applications
Huerta-Ángeles, G., Knotková,, K., Knotek, P., Židek, O., Brandejsová, M., Pokorný, M., Vagnerová, H., Roy, I. and Velebný, V. 2018. Aligned nanofibres made of poly(3-hydroxybutyrate) grafted to hyaluronan for potential healthcare applications . Journal of Materials Science: Materials in Medicine . 29 (32), pp. 2-8 32. https://doi.org/10.1007/s10856-018-6045-5

Binary Polyhydroxyalkanoate Systems for Soft Tissue Engineering
Lukasiewicz, B., Basnett, P., Nigmatullin, R., Matharu, R., Knowles, J.C. and Roy, I. 2018. Binary Polyhydroxyalkanoate Systems for Soft Tissue Engineering. Acta Biomaterialia. 71, pp. 225-234. https://doi.org/10.1016/j.actbio.2018.02.027

Poly(3-hydroxyoctanoate), a promising new material for cardiac tissue engineering
Bagdadi, A., Safari, M., Dubey, P., Basnett, P., Sofokleous P., Humphrey E, Locke, I.C., Edirisinghe M., Terracciano C., Boccaccini, A.R., Knowles, J.C., Harding, S. and Roy, I. 2018. Poly(3-hydroxyoctanoate), a promising new material for cardiac tissue engineering. Journal of Tissue Engineering and Regenerative Medicine. 12 (1), pp. E495-E512. https://doi.org/10.1002/term.2318

Production of a novel medium chain length Poly(3-hydroxyalkanoate) using unprocessed biodiesel waste and its evaluation as a tissue engineering scaffold
Basnett, P., Lukasiewicz, B., Marcello, E., Kaur, H., Knowles, J.C. and Roy, I. 2017. Production of a novel medium chain length Poly(3-hydroxyalkanoate) using unprocessed biodiesel waste and its evaluation as a tissue engineering scaffold. Microbial Biotechnology. 10 (6), pp. 1384-1399. https://doi.org/10.1111/1751-7915.12782

Highly elastomeric poly(3-hydroxyoctanoate) based natural polymer composite for enhanced keratinocyte regeneration
Rai, R., Roether, J.A., Knowles, J.C., Mordan, N., Salih, V., Locke, I.C., Gordge, M.P., McCormick, A., Mohn, D., Stark, W.J., Keshavarz, T., Boccaccini, A.R. and Roy, I. 2017. Highly elastomeric poly(3-hydroxyoctanoate) based natural polymer composite for enhanced keratinocyte regeneration. International Journal of Polymeric Materials and Polymeric Biomaterials . 66 (7), pp. 326-335. https://doi.org/10.1080/00914037.2016.1217530

Synthesis of graft copolymers based on hyaluronan and poly(3-hydroxyalkanoates)
Huerta-Angeles, G., Brandejsová, M., Nigmatullin, R., Kopecká, K., Vágnerová, H., Šmejkalová, D., Roy, I. and Velebný, V. 2017. Synthesis of graft copolymers based on hyaluronan and poly(3-hydroxyalkanoates). Carbohydrate Polymers. 171, pp. 220-228. https://doi.org/10.1016/j.carbpol.2017.05.011

A Strategy for Dual Biopolymer Production of P(3HB) and γ-PGA
Sukan, A., Roy, I. and Keshavarz, T. 2017. A Strategy for Dual Biopolymer Production of P(3HB) and γ-PGA. Journal of Chemical Technology and Biotechnology. 92 (7), pp. 1548-1557. https://doi.org/10.1002/jctb.5259

Novel P(3HB) Composite Films Containing Bioactive Glass Nanoparticles for Wound Healing Applications
Francis, L., Meng, D., Locke, I.C., Knowles, J.C., Mordan, N., Salih, V., Boccaccini, A.R. and Roy, I. 2016. Novel P(3HB) Composite Films Containing Bioactive Glass Nanoparticles for Wound Healing Applications. Polymer International. 65 (6), pp. 661-674. https://doi.org/10.1002/pi.5108

Biomedical applications of polyhydroxyalkanoates
Roy, I., Lizarraga Valderrama, L., Panchal, B. and Boccaccini, A. 2016. Biomedical applications of polyhydroxyalkanoates. in: Reis, R.L. and Neves, N. (ed.) Biomaterials from nature for advanced devices and therapies Oxford Wiley.

Nerve tissue engineering using blends of poly(3-hydroxyalkanoates) for peripheral nerve regeneration
Lizarraga Valderrama, L., Nigmatullin, R., Taylor, C., Haycock, J.W., Claeyssens, F., Knowles, J.C. and Roy, I. 2015. Nerve tissue engineering using blends of poly(3-hydroxyalkanoates) for peripheral nerve regeneration. Engineering in Life Sciences. 15 (6), pp. 612-621. https://doi.org/10.1002/elsc.201400151

Production, chemistry and properties of biopolymers in food science
Puthussery, H., Prasad, R., Gorazda, K. and Roy, I. 2015. Production, chemistry and properties of biopolymers in food science. in: Cirillo, G., Spizzirri, U. and Iemma, F. (ed.) Functional polymers in food science: from technology to biology: volume 1 food packaging London Wiley.

Novel cardiac patch development using biopolymers and biocomposites
Dubey, P., Boccaccini, A. and Roy, I. 2015. Novel cardiac patch development using biopolymers and biocomposites. in: Yang, Y. and Xu, H. (ed.) Lightweight materials from biopolymers and biofibers Washington DC, USA American Chemical Society.

Dual production of biopolymers from bacteria
Sukan, A., Roy, I. and Keshavarz, T. 2015. Dual production of biopolymers from bacteria. Carbohydrate Polymers. 126, pp. 47-51. https://doi.org/10.1016/j.carbpol.2015.03.001

Poly(3-hydroxyoctanoate): a novel natural material for cardiac tissue engineering
Dubey, P., Bagdadi, A., Boccaccini, A., Knowles, J., Stevens, M., Harding, S., Roy, I. and Ravi, S. 2014. Poly(3-hydroxyoctanoate): a novel natural material for cardiac tissue engineering. BHF Regenerative Medicine Centre Joint Annual and SAB meetings. Imperial College, London 31 Jul 2014

Nerve tissue engineering using blends of polyhydroxyalkanoates
Lizarraga Valderrama, L., Percy, L. and Roy, I. 2014. Nerve tissue engineering using blends of polyhydroxyalkanoates. 8th International Conference on Polymer and Fiber Biotechnology. Braga, Portugal 25 May 2014

Production of polyhydroxyalkanoates and their medical applications
Roy, I. 2014. Production of polyhydroxyalkanoates and their medical applications. International Symposium on Biopolymers. Santos, Brazil 30 Sep 2014

Agro-Industrial Waste Materials as Substrates for the Production of Poly(3-Hydroxybutyric Acid)
Sukan, A., Roy, I. and Keshavarz, T. 2014. Agro-Industrial Waste Materials as Substrates for the Production of Poly(3-Hydroxybutyric Acid). Journal of Biomaterials and Nanobiotechnology. 5 (4), pp. 229-240. https://doi.org/10.4236/jbnb.2014.54027

Biosynthesis of polyhydroxyalkanoates, their novel blends and composites for biomedical applications
Basnett, P. 2014. Biosynthesis of polyhydroxyalkanoates, their novel blends and composites for biomedical applications. PhD thesis University of Westminster Faculty of Science and Technology https://doi.org/10.34737/8y9yx

Composite polymer-bioceramic scaffolds with drug delivery capability for bone tissue engineering
Mourino, V., Cattalini, J.P., Roether, J.A., Dubey, P., Roy, I. and Boccaccini, A.R. 2013. Composite polymer-bioceramic scaffolds with drug delivery capability for bone tissue engineering. Expert Opinion on Drug Delivery. 10 (10), pp. 1353-1365. https://doi.org/10.1517/17425247.2013.808183

Evidence for the involvement of intracellular Ca 2+ ions in the elicitation mechanism of Bacillus Licheniformis
Reffatti, P., Roy, I., Odell, M. and Keshavarz, T. 2013. Evidence for the involvement of intracellular Ca 2+ ions in the elicitation mechanism of Bacillus Licheniformis. Journal of Molecular Microbiology and Biotechnology. OnlineFirst. https://doi.org/10.1159/000351515

Advances in PHAs Production
Amache, R., Sukan, A., Safari, M., Roy, I. and Keshavarz, T. 2013. Advances in PHAs Production . Chemical Engineering Transactions. 32, pp. 931-936. https://doi.org/10.3303/CET1332156

Polyhydroxyalkanoates: the natural polymers produced by bacterial fermentation
Panchal, B., Bagdadi, A. and Roy, I. 2013. Polyhydroxyalkanoates: the natural polymers produced by bacterial fermentation. in: Advances in natural polymer Elsevier.

Tetracycline-encapsulated P(3HB) microsphere-coated 45S5 Bioglass®-based scaffolds for bone tissue engineering
Meng, D., Francis, L., Thompson, I.D., Mierke, C., Huebner, H., Amtmann, A., Roy, I. and Boccaccini, A.R. 2013. Tetracycline-encapsulated P(3HB) microsphere-coated 45S5 Bioglass®-based scaffolds for bone tissue engineering. Journal of Materials Science: Materials in Medicine. 24 (12), pp. 2809-2817. https://doi.org/10.1007/s10856-013-5012-4

Aspirin-loaded P(3HO)/P(3HB) blend films: potential materials for biodegradable drug-eluting stents
Basnett, P., Ching, K.Y., Stolz, M., Knowles, J.C., Boccaccini, A.R., Smith, C.L., Locke, I.C. and Roy, I. 2013. Aspirin-loaded P(3HO)/P(3HB) blend films: potential materials for biodegradable drug-eluting stents. Bioinspired, Biomimetic and Nanobiomaterials. 2 (3), pp. 141-153. https://doi.org/10.1680/bbn.13.00009

Novel Poly(3-hydroxyoctanoate)/Poly(3-hydroxybutyrate) blends for medical applications
Basnett, P., Ching, K.Y., Stolz, M., Knowles, J.C., Boccaccini, A.R., Smith, C.L., Locke, I.C., Keshavarz, T. and Roy, I. 2013. Novel Poly(3-hydroxyoctanoate)/Poly(3-hydroxybutyrate) blends for medical applications. Reactive and Functional Polymers. 73 (10), pp. 1340-1348. https://doi.org/10.1016/j.reactfunctpolym.2013.03.019

Poly(3-hydroxybutyrate) production by Bacillus cereus SPV using sugarcane molasses as the main carbon source
Akaraonye, E., Moreno, C., Knowles, J.C., Keshavarz, T. and Roy, I. 2012. Poly(3-hydroxybutyrate) production by Bacillus cereus SPV using sugarcane molasses as the main carbon source. Biotechnology Journal. 7 (2), pp. 293-303. https://doi.org/10.1002/biot.201100122

Enhanced production of the polyhydroxyalkanoate, P(3HB), from cacillus cereus SPV and its applications in cartilage regeneration
Everest, A., Keshavarz, T. and Roy, I. 2012. Enhanced production of the polyhydroxyalkanoate, P(3HB), from cacillus cereus SPV and its applications in cartilage regeneration. Gordon Research Conference on Biopolymers. Salve Regina University, Newport, Rhode Island, USA 3-8 June 2012

Novel biodegradable and biocompatible poly(3-hydroxyoctanoate)/bacterial cellulose composites
Basnett, P., Knowles, J.C., Pishbin, F., Smith, C.L., Keshavarz, T., Boccaccini, A.R. and Roy, I. 2012. Novel biodegradable and biocompatible poly(3-hydroxyoctanoate)/bacterial cellulose composites. Advanced Engineering Materials. 14 (6), pp. B330-B343. https://doi.org/10.1002/adem.201180076

Poly-3-hydroxyoctanoate P(3HO), a medium chain length polyhydroxyalkanoate homopolymer from Pseudomonas mendocina
Rai, R., Yunos, D.M., Boccaccini, A.R., Knowles, J.C., Barker, I.A., Howdle, S.M., Tredwell, G.D., Keshavarz, T. and Roy, I. 2011. Poly-3-hydroxyoctanoate P(3HO), a medium chain length polyhydroxyalkanoate homopolymer from Pseudomonas mendocina. Biomacromolecules. 12 (6), pp. 2126-2136. https://doi.org/10.1021/bm2001999

Enhanced intracellular Ca(2+) concentrations in Escherichia coli and Bacillus subtilis after addition of oligosaccharide elicitors
Murphy, T., Nilsson, A., Roy, I., Harrop, A., Dixon, K. and Keshavarz, T. 2011. Enhanced intracellular Ca(2+) concentrations in Escherichia coli and Bacillus subtilis after addition of oligosaccharide elicitors. Biotechnology Letters. 33 (5), pp. 985-991. https://doi.org/10.1007/s10529-010-0511-6

Medium chain length polyhydroxyalkanoates, promising new biomedical materials for the future
Rai, R., Keshavarz, T., Roether, J.A., Boccaccini, A.R. and Roy, I. 2011. Medium chain length polyhydroxyalkanoates, promising new biomedical materials for the future. Materials Science and Engineering R: Reports. 72 (3), pp. 29-47. https://doi.org/10.1016/j.mser.2010.11.002

Production of polyhydroxyalkanoates and their medical applications
Roy, I., Akaraonye, E., Francis, L., Rai, R., Basnett, P. and Keshavarz, T. 2011. Production of polyhydroxyalkanoates and their medical applications. 7th International Conference on Polymer and Textile Biotechnology. Milan, Italy 2nd - 4th March 2011

Imaging internal features of whole, unfixed bacteria
Thomson, N., Channon, K., Mokhtar, N.A., Staniewicz, L., Rai, R., Roy, I., Sato, S., Tsuge, T., Donald, A.M., Summers, D. and Sivaniah, E. 2011. Imaging internal features of whole, unfixed bacteria. Scanning. 33 (2), pp. 59-68. https://doi.org/10.1002/sca.20221

Production of polyhydroxyalkanoates and their biomedical applications
Roy, I., Akaraonye, E., Francis, L., Rai, R., Basnett, P. and Keshavarz, T. 2011. Production of polyhydroxyalkanoates and their biomedical applications. Euro BioMat 2011 - European Symposium on Biomaterials and Related Areas. Jena, Germany

Polyhydroxyalkanoates: the emerging new green polymers of choice
Rai, R. and Roy, I. 2011. Polyhydroxyalkanoates: the emerging new green polymers of choice. in: Sharma, S.K. and Mudhoo, A. (ed.) A handbook of applied biopolymer technology: synthesis, degradation and applications Royal Society of Chemistry.

Using electrophoretic deposition to identify protein charge in biological medium
Meng, D., Francis, L., Roy, I. and Boccaccini, A.R. 2011. Using electrophoretic deposition to identify protein charge in biological medium. Journal of Applied Electrochemistry. 41 (8), pp. 919-923. https://doi.org/10.1007/s10800-011-0317-9

Controlled delivery of gentamicin using poly(3-hydroxybutyrate) microspheres
Francis, L., Meng, D., Knowles, J.C., Keshavarz, T., Boccaccini, A.R. and Roy, I. 2011. Controlled delivery of gentamicin using poly(3-hydroxybutyrate) microspheres. International Journal of Molecular Sciences. 12 (7), pp. 4294-4314. https://doi.org/10.3390/ijms12074294

Polyhydroxyalkanoate (PHA): bacterial cellulose composites for biomedical applications
Basnett, P., Smith, C.L., Boccaccini, A.R., Knowles, J.C., Keshavarz, T. and Roy, I. 2011. Polyhydroxyalkanoate (PHA): bacterial cellulose composites for biomedical applications. 24th European Conference on Biomaterials - Annual Conference of the European Society for Biomaterials. Dublin, Ireland Sept 2011

The homopolymer poly(3-hydroxyoctanoate) as a matrix material for soft tissue engineering
Rai, R., Boccaccini, A.R., Knowles, J.C., Mordon, N., Salih, V., Locke, I.C., Moshrefi-Torbati, M., Keshavarz, T. and Roy, I. 2011. The homopolymer poly(3-hydroxyoctanoate) as a matrix material for soft tissue engineering. Journal of Applied Polymer Science. 122 (6), pp. 3606-3617. https://doi.org/10.1002/app.34772

Impact of linoleic acid supplementation on lovastatin production in Aspergillus terreus cultures
Sorrentino, F., Roy, I. and Keshavarz, T. 2010. Impact of linoleic acid supplementation on lovastatin production in Aspergillus terreus cultures. Applied Microbiology and Biotechnology. 88 (1), pp. 65-73. https://doi.org/10.1007/s00253-010-2722-0

Production of SCL and MCL polyhydroxyalkanoates and their applications
Roy, I., Akaraonye, E., Francis, L., Rai, R. and Boccaccini, A.R. 2010. Production of SCL and MCL polyhydroxyalkanoates and their applications. 12th International Symposium on Biodegradable Polyesters. Stuttgart, Germany.

Multifunctional P(3HB) microsphere/45S Bioglass ®-based composite scaffolds for bone tissue engineering
Francis, L., Meng, D., Boccaccini, A.R. and Roy, I. 2010. Multifunctional P(3HB) microsphere/45S Bioglass ®-based composite scaffolds for bone tissue engineering. 12th International Symposium on Biodegradable Polyesters. Stuttgart, Germany.

In vitro mutagenesis of the type IV polyhydroxyalkanoate synthase from bacillus cereus SPV
Basnett, P., Philip, S.E., Markhiv, A., Vydayanathan, A. and Roy, I. 2010. In vitro mutagenesis of the type IV polyhydroxyalkanoate synthase from bacillus cereus SPV. 12th International Symposium on Biodegradable Polyesters. Stuttgart, Germany.

Enhanced and economical production of poly(3-hydroxybutyrate), a biodegradable polymer and its applications
Akaraonye, E., Safarikova, M., Keshavarz, T. and Roy, I. 2010. Enhanced and economical production of poly(3-hydroxybutyrate), a biodegradable polymer and its applications. 12th International Symposium on Biodegradable Polyesters. Stuttgart, Germany.

Multi-functional P(3HB) microsphere/45S5 Bioglass((R))-based composite scaffolds for bone tissue engineering
Francis, L., Meng, D., Knowles, J.C., Roy, I. and Boccaccini, A.R. 2010. Multi-functional P(3HB) microsphere/45S5 Bioglass((R))-based composite scaffolds for bone tissue engineering. Acta Biomaterialia. 6 (7), pp. 2773-2786. https://doi.org/10.1016/j.actbio.2009.12.054

In vitro production of polyhydroxyalkanoates: achievements and applications
Thomson, N., Roy, I., Summers, D. and Sivaniah, E. 2010. In vitro production of polyhydroxyalkanoates: achievements and applications. Journal of Chemical Technology and Biotechnology. 85 (6), pp. 760-767. https://doi.org/10.1002/jctb.2299

Polyhydroxyalkanoates: bioplastics with a green agenda
Keshavarz, T. and Roy, I. 2010. Polyhydroxyalkanoates: bioplastics with a green agenda. Current Opinion in Microbiology. 13 (3), pp. 321-326. https://doi.org/10.1016/j.mib.2010.02.006

Production of polyhydroxyalkanoates: the future green materials of choice
Akaraonye, E., Keshavarz, T. and Roy, I. 2010. Production of polyhydroxyalkanoates: the future green materials of choice. Journal of Chemical Technology and Biotechnology. 85 (6), pp. 732-743. https://doi.org/10.1002/jctb.2392

Poly(3-hydroxybutyrate) multifunctional composite scaffolds for tissue engineering applications
Misra, S.K., Ansari, T.I., Valappil, S.P., Mohn, D., Philip, S.E., Stark, W.J., Roy, I., Knowles, J.C., Salih, V. and Boccaccini, A.R. 2010. Poly(3-hydroxybutyrate) multifunctional composite scaffolds for tissue engineering applications. Biomaterials. 31 (10), pp. 2806-2815. https://doi.org/10.1016/j.biomaterials.2009.12.045

Characterization of carbon nanotube (MWCNT) containing P(3HB)/bioactive glass composites for tissue engineering applications
Misra, S.K., Ohashi, F., Valappil, S.P., Knowles, J.C., Roy, I., Ravi, S., Silva, P., Salih, V. and Boccaccini, A.R. 2010. Characterization of carbon nanotube (MWCNT) containing P(3HB)/bioactive glass composites for tissue engineering applications. Acta Biomaterialia. 6 (3), pp. 735-742. https://doi.org/10.1016/j.actbio.2009.09.023

Effect of nanoparticulate bioactive glass particles on bioactivity and cytocompatibility of poly(3-hydroxybutyrate) composites
Misra, S.K., Ansari, T.I., Mohn, D., Valappil, S.P., Brunner, T.J., Stark, W.J., Roy, I., Knowles, J.C., Sibbons, P.D., Valsami-Jones, E., Boccaccini, A.R. and Salih, V. 2010. Effect of nanoparticulate bioactive glass particles on bioactivity and cytocompatibility of poly(3-hydroxybutyrate) composites. Journal of the Royal Society Interface. 7 (44), pp. 453-465. https://doi.org/10.1098/rsif.2009.0255

Polyhydroxyalkanoates, the emerging new green polymers of choice
Rai, R. and Roy, I. 2010. Polyhydroxyalkanoates, the emerging new green polymers of choice. in: Biodegradable polymers and green chemistry Royal Society of Chemistry. pp. 79-97

Microbial production of biodegradable polymers and their role in cardiac stent development
Basnett, P. and Roy, I. 2010. Microbial production of biodegradable polymers and their role in cardiac stent development. in: Mendez-Vilas, A. (ed.) Current research, technology and education topics in applied microbiology and microbial biotechnology Formatex Research Center.

Biodegradable polymers and their role in coronary stent development
Basnett, P. and Roy, I. 2010. Biodegradable polymers and their role in coronary stent development. in: Current research in technology and education topics in applied microbiology and microbial biotechnology Formatex Research Center.

Fabrication of a novel poly(3-hydroxyoctanoate) / nanoscale bioactive glass composite film with potential as a multifunctional wound dressing
Rai, R., Boccaccini, A.R., Knowles, J.C., Locke, I.C., Gordge, M.P., McCormick, A., Salih, V., Mordon, N., Keshavarz, T. and Roy, I. 2010. Fabrication of a novel poly(3-hydroxyoctanoate) / nanoscale bioactive glass composite film with potential as a multifunctional wound dressing. 5th international conference on times of polymers (TOP) and composites. Ischia, Italy 20–23 June 2010 https://doi.org/10.1063/1.3455552

The influence of tetracycline loading on the surface morphology and biocompatibility of films made from P(3HB) microspheres
Francis, L., Meng, D., Locke, I.C., Mordon, N., Salih, V., Knowles, J.C., Boccaccini, A.R. and Roy, I. 2010. The influence of tetracycline loading on the surface morphology and biocompatibility of films made from P(3HB) microspheres. Advanced Engineering Materials. 12 (7), pp. B260-B268. https://doi.org/10.1002/adem.201080020

Electrospun nanofibrous biodegradable polyester coatings on Bioglass®-based glass-ceramics for tissue engineering
Bretcanu, O., Misra, S.K., Yunos, D.M., Boccaccini, A.R., Roy, I., Kowalczyk, T., Blonski, S. and Kowalewski, T.A. 2009. Electrospun nanofibrous biodegradable polyester coatings on Bioglass®-based glass-ceramics for tissue engineering. Materials Chemistry and Physics. 118 (2-3), pp. 420-426. https://doi.org/10.1016/jmatchemphys.2009.08.01

Quantitative PCR study on the mode of action of oligosaccharide elicitors on penicillin G production by Penicillium chrysogenum
Nair, R.R., Roy, I., Bucke, C. and Keshavarz, T. 2009. Quantitative PCR study on the mode of action of oligosaccharide elicitors on penicillin G production by Penicillium chrysogenum. Journal of Applied Microbiology. 107 (4), pp. 1131-1139. https://doi.org/10.1111/j.1365-2672.2009.04293.x

Effect of impeller speed and pH on the production of Poly(3-hydroxybutyrate) using Bacillus cereus SPV
Philip, S.E., Sengupta, S., Keshavarz, T. and Roy, I. 2009. Effect of impeller speed and pH on the production of Poly(3-hydroxybutyrate) using Bacillus cereus SPV. Biomacromolecules. 10 (4), pp. 691-699. https://doi.org/10.1021/bm801395p

Incorporation of vitamin E in poly(3hydroxybutyrate)/Bioglass composite films: effect on surface properties and cell attachment
Misra, S.K., Philip, S.E., Chrzanowski, W., Nazhat, S.N., Roy, I., Knowles, J.C., Salih, V. and Boccaccini, A.R. 2009. Incorporation of vitamin E in poly(3hydroxybutyrate)/Bioglass composite films: effect on surface properties and cell attachment. Journal of the Royal Society Interface. 6 (33), pp. 401-409. https://doi.org/10.1098/rsif.2008.0278

In vitro biocompatibility of 45S5 Bioglass®-derived glass-ceramic scaffolds coated with poly(3-hydroxybutyrate)
Bretcanu, O., Misra, S.K., Roy, I., Renghini, C., Fiori, F., Boccaccini, A.R. and Salih, V. 2009. In vitro biocompatibility of 45S5 Bioglass®-derived glass-ceramic scaffolds coated with poly(3-hydroxybutyrate). Journal of Tissue Engineering and Regenerative Medicine. 3 (2), pp. 139-148. https://doi.org/10.1002/term.150

Polyhydroxyalkanoate synthases-enzymes involved in biodegradable polymer synthesis
Roy, I., Philip, S.E. and Keshavarz, T. 2009. Polyhydroxyalkanoate synthases-enzymes involved in biodegradable polymer synthesis. COST Action 868: Biotechnical Functionalisation of Renewable Polymeric Materials : Meeting on "Biotechnology and Biopolymers in Textile, Packaging, Cosmetics and Medical Applications". Istanbul, Turkey 19 - 20 Feb 2009

Microbial PHA biosynthesis and its biomedical applications
Roy, I., Philip, S.E., Francis, L., Rai, R., Keshavarz, T., Misra, S.K., Decheng, M. and Boccaccini, A.R. 2009. Microbial PHA biosynthesis and its biomedical applications. in: Proceedings of Euromat 2009, Glasgow, 7 - 10 September 2009 Euromat.

A class IV PHA synthase from Bacillus cereus SPV
Philip, S.E. and Roy, I. 2009. A class IV PHA synthase from Bacillus cereus SPV. in: Kiekens, P., Nierstrasz, V. and Lenting, H.B.M. (ed.) Proceedings of the international conference on textile and polymer biotechnology 6th Het Pand, Ghent, Belgium 23-25 September 2009 Ghent University. Department of Textiles Ghent.

P(3HB) production by Bacillus cereus SPV using sucrose as a carbon source
Akaraonye, E., Keshavarz, T. and Roy, I. 2009. P(3HB) production by Bacillus cereus SPV using sucrose as a carbon source. in: Kiekens, P., Nierstrasz, V. and Lenting, H.B.M. (ed.) Proceedings of the international conference on textile and polymer biotechnology 6th Het Pand, Ghent, Belgium 23-25 September 2009 Ghent University. Department of Textiles Ghent.

Elicitation effects of oligosaccharides on the transcriptional level of bacitracin ABC transporter genes in Bacillus licheniformis
Murphy, T., Roy, I., Harrop, A., Dixon, K. and Keshavarz, T. 2008. Elicitation effects of oligosaccharides on the transcriptional level of bacitracin ABC transporter genes in Bacillus licheniformis. Biotechnology Letters. 30 (9), pp. 1665-1670. https://doi.org/10.1007/s10529-008-9743-0

Polyhydroxyalkanoate biosynthesis in Bacillus cereus SPV under varied limiting conditions and an insight into the biosynthetic genes involved
Valappil, S.P., Rai, R., Bucke, C. and Roy, I. 2008. Polyhydroxyalkanoate biosynthesis in Bacillus cereus SPV under varied limiting conditions and an insight into the biosynthetic genes involved. Journal of Applied Microbiology. 104 (6), pp. 1624-1635. https://doi.org/10.1111/j.1365-2672.2007.03678.x

Comparison of nanoscale and microscale bioactive glass on the properties of P(3HB)/Bioglass® composites
Misra, S.K., Mohn, D., Brunner, T.J., Stark, W.J., Philip, S.E., Roy, I., Salih, V., Knowles, J.C. and Boccaccini, A.R. 2008. Comparison of nanoscale and microscale bioactive glass on the properties of P(3HB)/Bioglass® composites. Biomaterials. 29 (12), pp. 1750-1761. https://doi.org/10.1016/j.biomaterials.2007.12.040

Metabolite profiles of interacting mycelial fronts differ for pairings of the wood decay basidiomycete fungus, Stereum hirsutum with its competitors Coprinus micaceus and Coprinus disseminatus
Peiris, D., Dunn, W.B., Brown, M., Kell, D.B., Roy, I. and Hedger, J.N. 2008. Metabolite profiles of interacting mycelial fronts differ for pairings of the wood decay basidiomycete fungus, Stereum hirsutum with its competitors Coprinus micaceus and Coprinus disseminatus. Metabolomics. 4 (1), pp. 52-62. https://doi.org/10.1007/s11306-007-0100-4

Optimisation of β-glucuronidase production from a newly isolated Ganoderma applanatum
Chouiter, R., Roy, I. and Bucke, C. 2008. Optimisation of β-glucuronidase production from a newly isolated Ganoderma applanatum. Journal of Molecular Catalysis B: Enzymatic. 50 (2-4), pp. 114-120. https://doi.org/10.1016/j.molcatb.2007.09.015

Microbial biosynthesis of PHAs and its applications
Roy, I., Philip, S.E., Francis, L., Rai, R., Valappil, S.P., Markiv, A., Keshavarz, T., Misra, S.K., Decheng, M. and Boccaccini, A.R. 2008. Microbial biosynthesis of PHAs and its applications. COST Action 868: Biotechnical Functionalisation of Renewable Polymeric Materials: 2008 Annual Workshop (combined Working Group and Management Committee meeting). Varna, Bulgaria 18 -19 Sep 2008

Microbial PHA biosynthesis and its applications
Roy, I., Philip, S.E., Francis, L., Rai, R., Valappil, S.P., Markiv, A., Keshavarz, T., Misra, S.K., Decheng, M. and Boccaccini, A.R. 2008. Microbial PHA biosynthesis and its applications. 11th International Symposium on Biodegradable Polyesters. Massey University in Auckland, New Zealand 23 - 26 Nov 2008

Polyhydroxyalkanoates: a new generation of biotechnologically produced biodegradable polymers
Roy, I. and Philip, S.E. 2008. Polyhydroxyalkanoates: a new generation of biotechnologically produced biodegradable polymers. in: Richter, F.W. (ed.) Biotechnology: research, technology and applications New York Nova Science Publishers. pp. 1-48

Fabrication of a novel
Roy, I. and Philip, S.E. 2008. Fabrication of a novel. in: Richter, F.W. (ed.) Biotechnology: research, technology and applications New York Nova Science Publishers. pp. 1-48

Production of medium chain length polyhydroxyalkanoates using Pseudomonas species
Rai, R., Keshavarz, T. and Roy, I. 2008. Production of medium chain length polyhydroxyalkanoates using Pseudomonas species. 11th International Symposium on Biodegradable Polyesters. Massey University in Auckland, New Zealand 23 - 26 Nov 2008

Polyhydroxyalkanoate synthase in Bacillus cereus SPV, a class IV PHA synthase
Philip, S.E., Odell, M., Keshavarz, T. and Roy, I. 2008. Polyhydroxyalkanoate synthase in Bacillus cereus SPV, a class IV PHA synthase. 11th International Symposium on Biodegradable Polyesters. Massey University in Auckland, New Zealand 23 - 26 Nov 2008

Optimisation studies of multiple elicitor addition in microbial systems: P.Chrysogenum and B.Lichiniformis
Nair, R.R., Murphy, T., Roy, I., Harrop, A., Dixon, K. and Keshavarz, T. 2008. Optimisation studies of multiple elicitor addition in microbial systems: P.Chrysogenum and B.Lichiniformis. in: Marino, G., Bardone, E. and Viglia, A. (ed.) IBIC2008 - 1st International Conference on Industrial Biotechnology AIDIC Servizi S.r.l..

Polyhydroxyalkanoate synthasis using Bacillus cereus SPV
Francis, L., Keshavarz, T. and Roy, I. 2008. Polyhydroxyalkanoate synthasis using Bacillus cereus SPV. COST Action 868: Biotechnical Functionalisation of Renewable Polymeric Materials: 2008 Annual Workshop (combined Working Group and Management Committee meeting). Varna, Bulgaria 18 -19 Sep 2008

Large-scale production and efficient recovery of PHB with desirable material properties, from the newly characterised Bacillus cereus SPV
Valappil, S.P., Misra, S.K., Boccaccini, A.R., Keshavarz, T., Bucke, C. and Roy, I. 2007. Large-scale production and efficient recovery of PHB with desirable material properties, from the newly characterised Bacillus cereus SPV. Journal of Biotechnology. 132 (3), pp. 251-258. https://doi.org/10.1016/j.jbiotec.2007.03.013

Biodegradable polymer coated 45S5 Bioglassderived glass-ceramic scaffolds for bone tissue engineering
Bretcanu, O., Chen, Q., Misra, S.K., Boccaccini, A.R., Roy, I., Verne, E. and Brovarone, C.V. 2007. Biodegradable polymer coated 45S5 Bioglassderived glass-ceramic scaffolds for bone tissue engineering. European Journal of Glass Science and Technology Part A. 48 (5), pp. 227-234.

Effect of oligosaccharide elicitors on bacitracin A production and evidence of transcriptional level control
Keshavarz, T., Murphy, T., Roy, I., Harrop, A. and Dixon, K. 2007. Effect of oligosaccharide elicitors on bacitracin A production and evidence of transcriptional level control. Journal of Biotechnology. 131 (4), pp. 397-403. https://doi.org/10.1016/j.jbiotec.2007.07.943

Fabrication and characterization of biodegradable poly(3-hydroxybutyrate) composite containing Bioglass
Misra, S.K., Nazhat, S.N., Valappil, S.P., Moshrefi-Torbati, M., Wood, R.J.K., Roy, I. and Boccaccini, A.R. 2007. Fabrication and characterization of biodegradable poly(3-hydroxybutyrate) composite containing Bioglass. Biomacromolecules. 8 (7), pp. 2112-2119. https://doi.org/10.1021/bm0701954S1525-7797(07)00195-X

Novel application of oligosaccharides as elicitors for the enhancement of bacitracin A production in cultures of Bacillus licheniformis
Murphy, T., Parra, R., Radman, R., Roy, I., Harrop, A., Dixon, K. and Keshavarz, T. 2007. Novel application of oligosaccharides as elicitors for the enhancement of bacitracin A production in cultures of Bacillus licheniformis. Enzyme and Microbial Technology. 40 (6), pp. 1518-1523. https://doi.org/10.1016/j.enzmictec.2006.10.030

Polyhydroxyalkanoates: biodegradable polymers with a range of applications
Philip, S.E., Keshavarz, T. and Roy, I. 2007. Polyhydroxyalkanoates: biodegradable polymers with a range of applications. Journal of Chemical Technology and Biotechnology. 82 (3), pp. 233-247. https://doi.org/10.1002/jctb.1667

Poly(3- hydroxybutyrate)/Bioglass® composite films containing carbon nanotubes
Misra, S.K., Watts, P.C.P., Valappil, S.P., Silva, S.R.P., Boccaccini, A.R. and Roy, I. 2007. Poly(3- hydroxybutyrate)/Bioglass® composite films containing carbon nanotubes. Nanotechnology. 18 (7), p. 075701. https://doi.org/10.1088/0957-4484/18/7/075701

PHA biosynthesis in Bacillus cereus SPV and its applications
Roy, I., Valappil, S.P., Misra, S.K. and Boccaccini, A.R. 2007. PHA biosynthesis in Bacillus cereus SPV and its applications. COST Action 868: Biotechnical Functionalisation of Renewable Polymeric Materials: first annual workshop. Graz, Austria 12 - 14 Sep 2007

PHA Biosynthesis in Bacillus cereus SPV
Roy, I., Philip, S.E., Rai, R. and Valappil, S.P. 2007. PHA Biosynthesis in Bacillus cereus SPV. International Conference on Biodegradable Polymers: their production, characterisation and application. SCI, London 10 Dec 2007

Production of Polyhydroxyalkanoates from Bacillus cereus SPV under different nutrient limiting conditions
Rai, R., Padinhara, S.V., Keshavarz, T. and Roy, I. 2007. Production of Polyhydroxyalkanoates from Bacillus cereus SPV under different nutrient limiting conditions. COST Action 868: Biotechnical Functionalisation of Renewable Polymeric Materials: first annual workshop. Graz, Austria 12 - 14 Sep 2007

Production of medium chain length polyhydroxyalkanoates using pseudomonas species UOW0417398
Rai, R., Keshavarz, T. and Roy, I. 2007. Production of medium chain length polyhydroxyalkanoates using pseudomonas species UOW0417398. International Conference on Biodegradable Polymers: their production, characterisation and application. SCI, London 10 Dec 2007

Polyhydroxy-alkanoates - the biodegradable polymers
Philip, S.E., Odell, M., Keshavarz, T. and Roy, I. 2007. Polyhydroxy-alkanoates - the biodegradable polymers. International Conference on Biodegradable Polymers: their production, characterisation and application. SCI, London 10 Dec 2007

Biosynthesis of polyhydroxyalkanoates and their applications
Francis, L., Keshavarz, T. and Roy, I. 2007. Biosynthesis of polyhydroxyalkanoates and their applications. International Conference on Biodegradable Polymers: their production, characterisation and application. SCI, London 10 Dec 2007

Polyhydroxyalkanoate (PHA) biosynthesis from structurally unrelated carbon sources by a newly characterized Bacillus spp
Valappil, S.P., Peiris, D., Langley, G.J., Herniman, J.M., Boccaccini, A.R., Bucke, C. and Roy, I. 2007. Polyhydroxyalkanoate (PHA) biosynthesis from structurally unrelated carbon sources by a newly characterized Bacillus spp. Journal of Biotechnology. 127 (3), pp. 475-487. https://doi.org/10.1016/j.jbiotec.2006.07.015

Polyhydroxyalkanoates in Gram-positive bacteria: insights from the genera Bacillus and Streptomyces
Valappil, S.P., Boccaccini, A.R., Bucke, C. and Roy, I. 2007. Polyhydroxyalkanoates in Gram-positive bacteria: insights from the genera Bacillus and Streptomyces. Antonie van Leeuwenhoek. 91 (1), pp. 1-17. https://doi.org/10.1007/s10482-006-9095-5

Biomedical applications of polyhydroxyalkanoates: an overview of animal testing and in vivo responses
Valappil, S.P., Misra, S.K., Boccaccini, A.R. and Roy, I. 2006. Biomedical applications of polyhydroxyalkanoates: an overview of animal testing and in vivo responses. Expert Review of Medical Devices. 3 (6), pp. 853-868. https://doi.org/10.1586/17434440.3.6.853

Nanoindentation testing of biodegradabale polymers
Wood, R.J.K., Dan, S., Moshrefi-Torbati, M., Misra, S.K., Valappil, S.P., Boccaccini, A.R. and Roy, I. 2006. Nanoindentation testing of biodegradabale polymers. Proceedings of CAMTEC Workshop. University of Cambridge, Cambridge, UK 11 Apr 2006

PHA biosynthesis in Bacillus cereus SPV and its applications
Roy, I., Valappil, S.P., Misra, S.K. and Boccaccini, A.R. 2006. PHA biosynthesis in Bacillus cereus SPV and its applications. Proceedings of the International Symposium on Biological Polyesters. Minneapolis, USA 27 - 31 Aug 2006

Polyhydroxyalkanoate (PHA)/inorganic phase composites for tissue engineering applications
Misra, S.K., Valappil, S.P., Roy, I. and Boccaccini, A.R. 2006. Polyhydroxyalkanoate (PHA)/inorganic phase composites for tissue engineering applications. Biomacromolecules. 7 (8), pp. 2250-2257. https://doi.org/10.1021/bm060317c

Development of polyhydroxyalkanoates/Bioglass® composite tissue scaffolds for tissue engineering applications
Misra, S.K., Valappil, S.P., Nazhat, S.N., Moshrefi-Torbati, M., Roy, I. and Boccaccini, A.R. 2006. Development of polyhydroxyalkanoates/Bioglass® composite tissue scaffolds for tissue engineering applications. Proceedings of the 20th European Conference on Biomaterials, European Society of Biomaterials. Nantes, FRANCE 27 Sep - 01 Oct 2006

From bacteria to tissue engineering applications-usage of polyhydroxyalkanoates for biomedical applications
Misra, S.K., Nazhat, S.N., Torbati, M.M., Silva, S.R.P., Roy, I. and Boccaccini, A.R. 2006. From bacteria to tissue engineering applications-usage of polyhydroxyalkanoates for biomedical applications. Proceedings of the International Conference on the Design of Biomaterials. Kanpur, India 08 - 11 Dec 2006

Polyhydroxyalkanoate synthases: the enzymes involved in biodegradable polymer synthesis
Valappil, S.P., Philip, S.E., Odell, M., Keshavarz, T. and Roy, I. 2005. Polyhydroxyalkanoate synthases: the enzymes involved in biodegradable polymer synthesis. Proceedings of Frontiers in Chemical Biology: Mechanistic Enzymology and Biocatalysis. Exeter, UK 31 Aug - 02 Sep 2005

Large scale production of P(3HB) from newly isolated Bacillus sp.
Valappil, S.P., Keshavarz, T., Bucke, C. and Roy, I. 2005. Large scale production of P(3HB) from newly isolated Bacillus sp. Proceedings of the 1st International Conference on Environmental Industrial and Applied Microbiology. Badajoz, Spain 15 - 18 Mar 2005

Effect of various carbon sources on the production of PHAs from the newly isolated Bacillus sp.
Valappil, S.P., Bucke, C. and Roy, I. 2005. Effect of various carbon sources on the production of PHAs from the newly isolated Bacillus sp. Proceedings of the International Union of Microbiological Societies Congress, IUMS. San Fransisco, USA 23 - 28 Jul 2005

Towards unravelling the elicitation mechanism in cultures of Penicillium chrysogenin: Chrysogenin elicitation
Nair, R.R., Radman, R., Roy, I., Bucke, C. and Keshavarz, T. 2005. Towards unravelling the elicitation mechanism in cultures of Penicillium chrysogenin: Chrysogenin elicitation. in: Pierucci, S. (ed.) 7th Italian Conference on Chemical and Process Engineering: ICheaP 7, May 15-16, 2005, Giardini Di Naxos, Italy Italy Associazione Italiana Di Ingegneria Chimica.

Natural biodegradable polymers from the Polyhydroxyalkanoate family emerging as a promising material for biomedical applications
Misra, S.K., Boccaccini, A.R., Valappil, S.P. and Roy, I. 2005. Natural biodegradable polymers from the Polyhydroxyalkanoate family emerging as a promising material for biomedical applications. Proceedings of 'a Forecast of the Future for Biomaterials' Professor Larry L. Hench Retirement Symposium. London, UK 29 - 30 Sep 2005

The metabolic role of methymalonyl CoA mutase in Escherichia coli
Kannan, S.M., Dwek, M., Bucke, C. and Roy, I. 2005. The metabolic role of methymalonyl CoA mutase in Escherichia coli. Proceedings of Viteomics: structure and function of vitamins and cofactors. Cambridge, UK 2005

Polysaccharides and polysaccharide-modifying enzymes in Ganoderma species
Chouiter, R., Roy, I. and Bucke, C. 2005. Polysaccharides and polysaccharide-modifying enzymes in Ganoderma species. Proceedings of the 13th European Carbohydrate Symposium. Bratislava, Slovakia 21 - 26 Aug 2005

Polysaccharide-modifying enzymes from Ganoderma species and their applications
Chouiter, R., Roy, I. and Bucke, C. 2005. Polysaccharide-modifying enzymes from Ganoderma species and their applications. Proceedings of the 1st International Conference on Environmental Industrial and Applied Microbiology. Badajoz, Spain 15 - 18 Mar 2005

Phylogenetic relationships between Basidiomycetes believed to be Ganoderma species based on distance analysis of their 5.8S, ITS1 and ITS2 rDNA sequences
Chouiter, R., Roy, I. and Bucke, C. 2005. Phylogenetic relationships between Basidiomycetes believed to be Ganoderma species based on distance analysis of their 5.8S, ITS1 and ITS2 rDNA sequences. Proceedings of the 1st International Conference on Environmental Industrial and Applied Microbiology. Badajoz, Spain 15 - 18 Mar 2005

‘Identification and isolation of polyhydroalkanoates and cloning of PHA biosynthetic genes from Bacillus cereus SPV
Valappil, S.P., Bucke, C. and Roy, I. 2004. ‘Identification and isolation of polyhydroalkanoates and cloning of PHA biosynthetic genes from Bacillus cereus SPV. Proceedings of the International Symposium on Biological Polyesters, ISBP. Beijing, China 22 - 28 Aug 2004

Biosynthesis of polyhydroxyalkanoic acids by Streptomyces coelicolor
Valappil, S.P., Bhatia, Y., Bucke, C. and Roy, I. 2004. Biosynthesis of polyhydroxyalkanoic acids by Streptomyces coelicolor. e-Polymers.

Polyhydroxyalkanoate production by Bacillus cereus SPV
Roy, I. 2004. Polyhydroxyalkanoate production by Bacillus cereus SPV. Proceedings of the International Symposium on Biological Polyesters, ISBP. Beijing, China 22 - 28 Aug 2004

Carbohydrates and carbohydrate active enzymes in Ganoderma applanatum
Budala, S., Bucke, C. and Roy, I. 2004. Carbohydrates and carbohydrate active enzymes in Ganoderma applanatum. Proceedings of the 22nd International Carbohydrate Symposium. Glasgow, UK 23 - 27 Jul 2004

5-Aminolevulinic acid synthase: mechanism, mutations and medicine
Shoolingin-Jordan, P., Al-Daihan, S., Alexeev, D., Baxter, R.L., Bottomley, S.S., Kahari, I.D., Roy, I., Sarwar, M., Sawyer, L. and Wang, S.F. 2003. 5-Aminolevulinic acid synthase: mechanism, mutations and medicine. Biochimica et Biophysica Acta: Proteins and Proteomics. 1647 (1-2), pp. 361-365. https://doi.org/10.1016/S1570-9639(03)00095-5

Biosynthesis of medium chain length polyhydroxyalakanoic acids by Streptomyces coelicolor
Valappil, S.P., Bucke, C. and Roy, I. 2003. Biosynthesis of medium chain length polyhydroxyalakanoic acids by Streptomyces coelicolor. ICBP 2003. Proceedings of the 1st IUPAC International Conference on Bio-Based Polymers. Saitama, Japan 12 - 14 Nov 2003

A possible role of poly-3-hydroxybutyric acid in antibiotic production in Streptomyces
Verma, S., Bhatia, Y., Valappil, S.P. and Roy, I. 2002. A possible role of poly-3-hydroxybutyric acid in antibiotic production in Streptomyces. Archives of Microbiology. 179 (1), pp. 66-69. https://doi.org/10.1007/s00203-002-0500-9

Biosynthesis of polyhydroxyalkanoates by Streptomyces coelicolor
Valappil, S.P., Bucke, C. and Roy, I. 2002. Biosynthesis of polyhydroxyalkanoates by Streptomyces coelicolor. Proceedings of the International Symposium on Biological Polyesters. Munster, Germany 22 - 26 Sep 2002

Production of polyhydroxybutyrate by streptomyces
Verma, S. and Roy, I. 2001. Production of polyhydroxybutyrate by streptomyces. Proceedings of the Gordon Research Conference. Connecticut, USA 2001

Phosphorylation of the periplasmic binding protein in two transport systems for arginine incorporation in Escherichia coli K-12 is unrelated to the function of the transport system
Celis, R.T.F., Leadlay, P.F., Roy, I. and Hansen, A. 1998. Phosphorylation of the periplasmic binding protein in two transport systems for arginine incorporation in Escherichia coli K-12 is unrelated to the function of the transport system. Journal of Bacteriology. 180 (18), pp. 4828-4833.

Metabolic Engineering, a route to the production of novel products
Roy, I. 1998. Metabolic Engineering, a route to the production of novel products. Proceedings of the National Conference on Bioprocessing and R-DNA Technology. Central Drug Research Institute, Lucknow, India 27 - 28 Mar 1998

A Methylmalonyl-CoA mutase in Escherichia coli?
Roy, I. and Leadlay, P.F. 1997. A Methylmalonyl-CoA mutase in Escherichia coli? in: Ahmad, F. (ed.) Advances in gene technology: biomolecular design, form and function Nature Publishing Group.

The masked cysteine residues in methylmalonyl-CoA mutase from Propionibacterium shermanii are essential for catalytic activity
Roy, I. 1996. The masked cysteine residues in methylmalonyl-CoA mutase from Propionibacterium shermanii are essential for catalytic activity. FEBS Letters. 394 (2), pp. 126-128. https://doi.org/10.1016/0014-5793(96)00897-6

Physical map location of the new Escherichia coli gene sbm
Roy, I. and Leadlay, P.F. 1992. Physical map location of the new Escherichia coli gene sbm. Journal of Bacteriology. 174 (17), pp. 5763-5764.

Mechanism and structure of a coenzyme-B12 dependent enzyme
Roy, I., Patchett, M.L., Keep, N.H. and Leadlay, P.F. 1990. Mechanism and structure of a coenzyme-B12 dependent enzyme. Proceedings of the Royal Society of Chemistry Fifth International Symposium on the Mechanisms of Reactions in Solution. University of Kent, UK 02 - 06 Jul 1990

The expression of adenosylcobalamin dependent methylmalonyl-CoA mutase from Propionibacterium shermanii in Escherichia coli
McKie, N., Keep, N.H., Roy, I., Patchett, M.L. and Leadlay, P.F. 1989. The expression of adenosylcobalamin dependent methylmalonyl-CoA mutase from Propionibacterium shermanii in Escherichia coli. Proceedings of the Royal Society of Chemistry International Symposium on the Molecular Mechanisms in Bioorganic Processes. University of Newcastle upon Tyne, UK 17 - 20 Jul 1989