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Sabeel Valappil

Dr Sabeel Valappil
BSc, MSc, PhD,PGCertEd FHEA

Publications

Selected publications

  1. Effect of novel antibacterial gallium-carboxymethyl cellulose on <i>Pseudomonas aeruginosa</i> (Journal article - 2013)
  2. Antimicrobial gallium-doped phosphate-based glasses (Journal article - 2008)
  3. Role of gallium and silver from phosphate-based glasses on in vitro dual species oral biofilm models of <i>Porphyromonas gingivalis</i> and <i>Streptococcus gordonii</i> (Journal article - 2012)
  4. Glass microparticle- versus microsphere-filled experimental dental adhesives (Journal article - 2019)
  5. Antibacterial, Remineralising and Matrix Metalloproteinase Inhibiting Scandium-doped Phosphate Glasses for Treatment of Dental Caries (Journal article - 2021)
  6. Antibacterial, remineralizing zinc oxide-doped phosphate-based glasses (Journal article - 2022)
  7. Evaluation of the co-existence of the red fluorescent plaque bacteria <i>P</i>. <i>gingivalis</i> with <i>S</i>. <i>gordonii</i> and <i>S</i>. <i>mutans</i> in white spot lesion formation during orthodontic treatment (Journal article - 2015)
  8. The cariogenic effect of starch on oral microcosm grown within the dual constant depth film fermenter (Journal article - 2021)
  9. Quantifying the Demineralisation of Enamel Using a Hyperspectral Camera Measuring Fluorescence Loss (Journal article - 2021)
  10. Evidence of an in vitro Coupled Diffusion Mechanism of Lesion Formation within Microcosm Dental Plaque (Journal article - 2017)
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2024

2023

2022

Antibacterial endodontic irrigants and Enterococcus faecalis biofilm viability

Hamza Aly, A. R., Jarad, F., Longridge, N., & Valappil, S. (2022). Antibacterial endodontic irrigants and Enterococcus faecalis biofilm viability. In 2022 IADR/APR General Session & Exhibition. https://www.iadr.org/2022iags.

Conference Paper

The effect of canal geometry on endodontic irrigation and Enterococcus faecalis retention

ALQasem, O., Jarad, F., & Valappil, S. (2022). The effect of canal geometry on endodontic irrigation and Enterococcus faecalis retention. In Antimicrobial Chemotherapy Virtual Conference 2022. https://acc-conference.com/.

Conference Paper

Time dependent antibiofilm activity of endodontic irrigants on Enterococcus faecalis

Hamza Aly, A. R., Jarad, F., Longridge, N., & Valappil, S. (2022). Time dependent antibiofilm activity of endodontic irrigants on Enterococcus faecalis. In Antimicrobial Chemotherapy Virtual Conference 2022. https://acc-conference.com/.

Conference Paper

2021

Antibacterial Effect of Titanium Dioxide-Doped Phosphate Glass Microspheres Filled Total-Etch Dental Adhesive on S. mutans Biofilm

Abou Neel, E. A., Zakir Hossain, K. M., Abuelenain, D. A., Abuhaimed, T., Ahmed, I., Valappil, S. P., & Knowles, J. C. (2021). Antibacterial Effect of Titanium Dioxide-Doped Phosphate Glass Microspheres Filled Total-Etch Dental Adhesive on S. mutans Biofilm. International Journal of Adhesion and Adhesives. doi:10.1016/j.ijadhadh.2021.102886

DOI
10.1016/j.ijadhadh.2021.102886
Journal article

Advanced Plaque Biofilm Modelling with Constant Depth Film Fermentation

Softley, R., Slomaka, V., Higham, S., Darby, A., & Valappil, S. (2021). Advanced Plaque Biofilm Modelling with Constant Depth Film Fermentation. In OMIG Prize meeting 2021.

Conference Paper

Comparing antimicrobial effects of endodontic irrigants on Enterococcus faecalis using various in-vitro models

Hamza Aly, A. R., Jarad, F., & Valappil, S. (2021). Comparing antimicrobial effects of endodontic irrigants on Enterococcus faecalis using various in-vitro models. In OMIG Prize meeting 2021.

Conference Paper

Effects of endodontic irrigants on Enterococcus faecalis

Hamza Aly, A. R., Jarad, F., & Valappil, S. (2021). Effects of endodontic irrigants on Enterococcus faecalis. In ANTIMICROBIAL CHEMOTHERAPY VIRTUAL CONFERENCE.

Conference Paper

2020

Auto fluorescent properties of early plaque grown in a Constant Depth Film Fermenter

Hyde, J., Desmons, S., Hope, C., Miles, E., Jackson, J., Cooper, L., . . . Valappil, S. (2020). Auto fluorescent properties of early plaque grown in a Constant Depth Film Fermenter. In https://iadr.abstractarchives.com/abstract/20iags-3318835/autofluorescent-properties-of-early-plaque-grown-in-a-cdff. Washington, D.C., USA.

Conference Paper

2019

2018

Efficacy of an Enzyme and Protein Toothpaste on Oral Biofilms

Miles, E. J., Hoptroff, M., Valappil, S. P., & Higham, S. M. (2018). Efficacy of an Enzyme and Protein Toothpaste on Oral Biofilms. In IADR PAN European Regional Congress. London, England.

Conference Paper

Investigating the Effect of Starch Within the Oral Environment via Constant Depth Film Fermenter

Roberts, J. M., Valappil, S. P., Lynch, R. J. M., Bradshaw, D. J., & Higham, S. M. (2018). Investigating the Effect of Starch Within the Oral Environment via Constant Depth Film Fermenter. In 65th ORCA Congress. Copenhagen, Denmark.

Conference Paper

Chapter 5 Nanosystems and antibacterial applications

Valappil, S. P. (2018). Chapter 5 Nanosystems and antibacterial applications. In Drug Delivery Nanosystems for Biomedical Applications (pp. 75-90). Elsevier. doi:10.1016/b978-0-323-50922-0.00005-5

DOI
10.1016/b978-0-323-50922-0.00005-5
Chapter

Nanosystems and antibacterial applications

Valappil, S. P. (2018). Nanosystems and antibacterial applications. In Drug Delivery Nanosystems for Biomedical Applications (pp. 75-90). Elsevier. doi:10.1016/b978-0-323-50922-0.00005-5

DOI
10.1016/b978-0-323-50922-0.00005-5
Chapter

2017

Effect of different concentrations of fluoride on bovine enamel within a controlled biological model.

Roberts, J. M., Valappil, S. P., lynch, R. J., Bradshaw, D. J., & Higham, S. M. (2017). Effect of different concentrations of fluoride on bovine enamel within a controlled biological model.. In ISSN: 0008-6568. Oslo, Norway.

Conference Paper

2016

In vitro Biofilm Formation: NaF Exposure within a Sucrose Pulsing Strategy

Owens, G. J., Lynch, R. J., Higham, S. M., Valappil, S. P., & Hope, C. K. (2016). In vitro Biofilm Formation: NaF Exposure within a Sucrose Pulsing Strategy. In European Organisation for Caries Research (ORCA) Vol. 47 (pp. 433-531). Liverpool.

Conference Paper

Effect of starch based snacks on enamel demineralisation in situ

Komarov, G. N., Cooper, L., Hope, C. K., Flannigan, N. L., Valappil, S. P., Smith, P. W., . . . Higham, S. M. (2016). Effect of starch based snacks on enamel demineralisation in situ. In 94th General Session &amp; Exhibition of the International Association for Dental Research. Seoul, Republic of Korea.

Conference Paper

2015

Evaluation of the co-existence of the red fluorescent plaque bacteria <i>P</i>. <i>gingivalis</i> with <i>S</i>. <i>gordonii</i> and <i>S</i>. <i>mutans</i> in white spot lesion formation during orthodontic treatment

Sadeq, A., Risk, J. M., Pender, N., Higham, S. M., & Valappil, S. P. (2015). Evaluation of the co-existence of the red fluorescent plaque bacteria <i>P</i>. <i>gingivalis</i> with <i>S</i>. <i>gordonii</i> and <i>S</i>. <i>mutans</i> in white spot lesion formation during orthodontic treatment. PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY, 12(2), 232-237. doi:10.1016/j.pdpdt.2015.03.001

DOI
10.1016/j.pdpdt.2015.03.001
Journal article

Antimicrobial Interfaces

Valappil, S. P. (2015). Antimicrobial Interfaces. BIOINTERFACES: WHERE MATERIAL MEETS BIOLOGY, 10, 399-423. Retrieved from https://www.webofscience.com/

Journal article

Effect of Scandium on Bovine Enamel Under pH-Cycling Conditions

Valappil, S., Burden, E., Miles, E., Cooper, L., & Higham, S. (2015). Effect of Scandium on Bovine Enamel Under pH-Cycling Conditions.

Journal article

Gallium and silver nano-composites: Fighting antibiotic resistance and antibacterial medical device coatings

Paul, W., Durgadas, C. V., Higham, S., Valappil, S., & Sharma, C. P. (2015). Gallium and silver nano-composites: Fighting antibiotic resistance and antibacterial medical device coatings.

Journal article

Use of Plaque-Fluid Representative pH-Cycling Conditions to Model Post-Eruptive Enamel Maturation In Vitro.

Miles, E., Valappil, S., Lynch, R., & Higham, S. (2015). Use of Plaque-Fluid Representative pH-Cycling Conditions to Model Post-Eruptive Enamel Maturation In Vitro..

Journal article

2014

Effect of Gallium on Growth of Streptococcus mutans NCTC10449 and Dental Tissues

Valappil, S. P., Owens, G. J., Miles, E. J., Farmer, N. L., Cooper, L., Miller, G., . . . Higham, S. M. (2014). Effect of Gallium on Growth of Streptococcus mutans NCTC10449 and Dental Tissues. Caries Research, 48(2), 137-146. doi:10.1159/000354048

DOI
10.1159/000354048
Journal article

Antimicrobial Interfaces

Valappil, S. P. (2014). Antimicrobial Interfaces. In C. Hutmacher (Ed.), Biointerfaces : Where Material Meets Biology (pp. 240). London: Royal Society of Chemistry (RSC).

Chapter

CHAPTER 14. Antimicrobial Interfaces

Valappil, S. P. (2014). CHAPTER 14. Antimicrobial Interfaces. In Smart Materials Series (pp. 399-423). Royal Society of Chemistry. doi:10.1039/9781782628453-00399

DOI
10.1039/9781782628453-00399
Chapter

Characterisation of phosphate coacervates for potential biomedical applications

Pickup, D. M., Newport, R. J., Barney, E. R., Kim, J. -Y., Valappil, S. P., & Knowles, J. C. (2014). Characterisation of phosphate coacervates for potential biomedical applications. JOURNAL OF BIOMATERIALS APPLICATIONS, 28(8), 1226-1234. doi:10.1177/0885328213502586

DOI
10.1177/0885328213502586
Journal article

Effect of Exposure to Plaque-Fluid Representative pH-Cycling Conditions on Bovine Enamel Demineralisation

Miles, E. J., Valappil, S. P., Lynch, R. J. M., & Higham, S. M. (2014). Effect of Exposure to Plaque-Fluid Representative pH-Cycling Conditions on Bovine Enamel Demineralisation. 61st Annual ORCA Conference, 1, 1.

Journal article

Effect of Sucrose on In Vitro Biofilm Formation and Acidogenic Capacity

Owens, G. J., Lynch, R. J. M., Higham, S. M., & Valappil, S. P. (2014). Effect of Sucrose on In Vitro Biofilm Formation and Acidogenic Capacity. IADR Conference-Cape Town, South Africa, 1, 1.

Journal article

Role of Gallium doped phosphate-based glasses in the Management of Periodontitis

Lackey, B., Sahdev, R., Nunes, Q., Ansari, T., Higham, S. M., Fernig, D., & Valappil, S. P. (2014). Role of Gallium doped phosphate-based glasses in the Management of Periodontitis. ESB 2014 - 26th European Conference on Biomaterials, 1, 1.

Journal article

Use of pH-cycling conditions to model post-eruptive maturation of dental enamel in vitro

Miles, E. J., Lynch, R. J. M., Valappil, S. P., & Higham, S. M. (2014). Use of pH-cycling conditions to model post-eruptive maturation of dental enamel in vitro. 11th International Medical Postgraduate Conference, 1, 1.

Journal article

2013

Effect of novel antibacterial gallium-carboxymethyl cellulose on <i>Pseudomonas aeruginosa</i>

Valappil, S. P., Yiu, H. H. P., Bouffier, L., Hope, C. K., Evans, G., Claridge, J. B., . . . Rosseinsky, M. J. (2013). Effect of novel antibacterial gallium-carboxymethyl cellulose on <i>Pseudomonas aeruginosa</i>. DALTON TRANSACTIONS, 42(5), 1778-1786. doi:10.1039/c2dt32235h

DOI
10.1039/c2dt32235h
Journal article

Comparison of two methods in the early detection of in vitro chemical demineralisation: a pilot study

Desmons, S., Adeyemi, A. A., Miles, E., Burnside, G., de Josselin de Jong, E., Valappil, S. P., . . . Higham, S. M. (2013). Comparison of two methods in the early detection of in vitro chemical demineralisation: a pilot study. Caries Research, 47, 21.

Journal article

Effect of Scandium on Streptococcus mutansNCTC10449

Valappil, S. P., Sahdev, R., & Higham, S. M. (2013). Effect of Scandium on Streptococcus mutansNCTC10449. Caries Research, 47, 6.

Journal article

Effect of novel antibacterial gallium-carboxymethyl cellulose on Pseudomonas aeruginosa

Valappil, S. P., Yiu, H. H. P., Bouffier, L., Hope, C. K., Evans, G., Claridge, J. B., . . . Rosseinsky, M. J. (n.d.). Effect of novel antibacterial gallium-carboxymethyl cellulose on Pseudomonas aeruginosa. Dalton Trans., 42(5), 1778-1786. doi:10.1039/c2dt32235h

DOI
10.1039/c2dt32235h
Journal article

The visual assessment of early in vitro chemical demineralisation using a multispectral imaging method.

Adeyemi, A. A., Desmons, S., Miles, E., Burnside, G., Valappil, S. P., Lynch, R. J. M., . . . Higham, S. M. (2013). The visual assessment of early in vitro chemical demineralisation using a multispectral imaging method.. Caries Research, 47, 37.

Journal article

2012

59th ORCA Congress. June 27-30, 2012, Cabo Frio, Brazil.

59th ORCA Congress. June 27-30, 2012, Cabo Frio, Brazil. (2012). Caries research, 46(3), 268-338. doi:10.1159/000338545

DOI
10.1159/000338545
Journal article

Role of gallium and silver from phosphate-based glasses on in vitro dual species oral biofilm models of <i>Porphyromonas gingivalis</i> and <i>Streptococcus gordonii</i>

Valappil, S. P., Coombes, M., Wright, L., Owens, G. J., Lynch, R. J. M., Hope, C. K., & Higham, S. M. (2012). Role of gallium and silver from phosphate-based glasses on in vitro dual species oral biofilm models of <i>Porphyromonas gingivalis</i> and <i>Streptococcus gordonii</i>. ACTA BIOMATERIALIA, 8(5), 1957-1965. doi:10.1016/j.actbio.2012.01.017

DOI
10.1016/j.actbio.2012.01.017
Journal article

2011

Artifical occlusal surface morphology and in virto enamel demineralisation

Owens, G., Lynch, R., Valappil, S., & Higham, S. M. (2011). Artifical occlusal surface morphology and in virto enamel demineralisation. Caries Research ORCA Lithuania, 45(2), 197-8 abs 58.

Journal article

Effect of Antibacterial Phosphate Based Glasses on Oral Biofilm Models

Valappil, S. P., Coombes, M., Wright, L., Owens, G., Lynch, R. J. M., Hope, C. K., & Higham, S. M. (2011). Effect of Antibacterial Phosphate Based Glasses on Oral Biofilm Models. In British Society for Oral and Dental Research, Sheffield Vol. Abs 00 (pp. IADR Abs 152784).

Conference Paper

Effect of Antibacterial Phosphate Based Glasses on Oral Biofilm Models

Valappil, S. P., Coombes, M., Wright, L., Owens, G. J., Lynch, R. J. M., Hope, C. K., & Higham, S. M. (2011). Effect of Antibacterial Phosphate Based Glasses on Oral Biofilm Models. BSODR Sheffield J Dent Res, abs, 1.

Journal article

Effect of gallium on Streptococcus mutans NCTC10449 and dental mineralisation

Valappil, S. P., Owens, G. J., & Higham, S. M. (2011). Effect of gallium on Streptococcus mutans NCTC10449 and dental mineralisation. Caries Research ORCA Lithuania, 45(2), 229 abs 133.

Journal article

Occlusal Surface Morphology and pH Cycling Effect on Enamel Demineralisation

Owens, G. J., Lynch, R. J. M., Valappil, S. P., & Higham, S. M. (2011). Occlusal Surface Morphology and pH Cycling Effect on Enamel Demineralisation. BSODR Sheffield J Dent Res, abs, 45.

Journal article

2010

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., . . . Boccaccini, A. R. (2010). Poly(3-hydroxybutyrate) multifunctional composite scaffolds for tissue engineering applications. BIOMATERIALS, 31(10), 2806-2815. doi:10.1016/j.biomaterials.2009.12.045

DOI
10.1016/j.biomaterials.2009.12.045
Journal article

Effect of nanoparticulate bioactive glass particles on bioactivity and cytocompatibility of poly(3-hydroxybutyrate) composites

Misra, S. K., Ansari, T., Mohn, D., Valappil, S. P., Brunner, T. J., Stark, W. J., . . . 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), 453-465. doi:10.1098/rsif.2009.0255

DOI
10.1098/rsif.2009.0255
Journal article

Impaired bacterial attachment to light activated Ni-Ti alloy

Chrzanowski, W., Valappil, S. P., Dunnill, C. W., Abou Neel, E. A., Lee, K., Parkin, I. P., . . . Knowles, J. C. (2010). Impaired bacterial attachment to light activated Ni-Ti alloy. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 30(2), 225-234. doi:10.1016/j.msec.2009.10.003

DOI
10.1016/j.msec.2009.10.003
Journal article

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., Silva, S. R. P., . . . Boccaccini, A. R. (2010). Characterization of carbon nanotube (MWCNT) containing P(3HB)/bioactive glass composites for tissue engineering applications. ACTA BIOMATERIALIA, 6(3), 735-742. doi:10.1016/j.actbio.2009.09.023

DOI
10.1016/j.actbio.2009.09.023
Journal article

Effect of antibacterial phosphate based glasses on Streptococcus gordonii DL1

Valappil, S. P., Wright, L., & Higham, S. M. (2010). Effect of antibacterial phosphate based glasses on Streptococcus gordonii DL1. IADR July, Barcelona, Spain. J Dent Res, 39B, Abs 3359.

Journal article

Effect of hydrogel concentration and calcium activity on demineralisation

Owens, G. J., Lynch, R. J. M., Cooper, L., Valappil, S. P., & Higham, S. M. (2010). Effect of hydrogel concentration and calcium activity on demineralisation. 57th ORCA 7-10 July. Montpellier, France. Caries Res, 44(3), 187 abs 43.

Journal article

Role of Gallium in Dental Mineralisation and Antibacterial Prophylaxis

Owens, G. J., Wright, L., Coombes, M., Higham, S. M., & Valappil, S. P. (2010). Role of Gallium in Dental Mineralisation and Antibacterial Prophylaxis. In OMIG meeting, Gregynog Hall, Wales, UK., 1, 1.

Journal article

Role of gallium in dental mineralisation

Owens, G. J., Lynch, R. J. M., Cooper, L., Clowes, R., Higham, S. M., & Valappil, S. P. (2010). Role of gallium in dental mineralisation. IADR, 14-17 July. Barcelona, Spain. J Dent Res, 89B, Abs 337.

Journal article

Tooth Surface Proximity and Orientation in Relation to Light-Induced Fluorescent Quantification

Owens, G. J., Lynch, R. J. M., Cooper, L., Valappil, S. P., & Higham, S. M. (2010). Tooth Surface Proximity and Orientation in Relation to Light-Induced Fluorescent Quantification. In ICQ2010 conference, Liverpool, UK, 1, 1.

Journal article

2009

Antimicrobial Activity of Metal-Doped Phosphate Based Glasses on the growth of Pseudomonas aeruginosa biofilms

Valappil, S. P., & Higham, S. M. (2009). Antimicrobial Activity of Metal-Doped Phosphate Based Glasses on the growth of Pseudomonas aeruginosa biofilms. 5th ASM conference on Biofilms, Cancun, Mexico, 0, 0.

Journal article

Effect of Novel Gallium-Silver- Phosphate Based Glasses on Porphyromonas gingivalis

Valappil, S. P., Coombes, M., Humphrey, Y., Rossinskey, M. J., & Higham, S. M. (2009). Effect of Novel Gallium-Silver- Phosphate Based Glasses on Porphyromonas gingivalis. BSDR, Glasgow, UK, 0, 0.

Journal article

Effect of novel gallium-silver-phosphate based glasses on Porphyromonas gingivalis

Valappil, S. P., Coombes, M., Yiu, H. H. P., Rosseinsky, M., & Higham, S. M. (2009). Effect of novel gallium-silver-phosphate based glasses on Porphyromonas gingivalis. BSDR Glasgow J Dent Res, 88B, abs 220.

Journal article

2008

Effect of increasing calcium concentration on antimicrobial activity of gallium-doped phosphate based glasses

Valappil, S. P., Ready, D., Abou Neel, E. A., Chrzanowski, W., Wilson, M., & Knowles, J. C. (2008). Effect of increasing calcium concentration on antimicrobial activity of gallium-doped phosphate based glasses. In 8th World Biomaterials Congress 2008 Vol. 2 (pp. 1066).

Conference Paper

Effect of surface modification of nickel titanium alloy on bacterial attachment

Chrzanowski, W., Valappil, S. P., Pratten, J., Armitage, D. A., & Knowles, J. C. (2008). Effect of surface modification of nickel titanium alloy on bacterial attachment. In 8th World Biomaterials Congress 2008 Vol. 3 (pp. 1208).

Conference Paper

Antimicrobial gallium-doped phosphate-based glasses

Valappil, S. P., Ready, D., Abou Neel, E. A., Pickup, D. M., Chrzanowski, W., O'Dell, L. A., . . . Knowles, J. C. (2008). Antimicrobial gallium-doped phosphate-based glasses. ADVANCED FUNCTIONAL MATERIALS, 18(5), 732-741. doi:10.1002/adfm.200700931

DOI
10.1002/adfm.200700931
Journal article

Antimicrobial Activity of Metal-Doped Phosphate Based Glasses on Periodontal Pathogens

Valappil, S. P., Ready, D., Wilson, M., & Knowles, J. C. (2008). Antimicrobial Activity of Metal-Doped Phosphate Based Glasses on Periodontal Pathogens. PEF IADR London J Dent Res, 87, 171.

Journal article

Antimicrobial activity of metal-doped phosphate based glasses on periodontal pathogens

Valappil, S., Ready, D., Wilson, M., & Knowles, J. C. (2008). Antimicrobial activity of metal-doped phosphate based glasses on periodontal pathogens. 3rd PEF/IADR Sept London J Dent Res, 87, 0588.

Journal article

Calcium phosphate and antibacterial agent releasing methacrylate dental composite

Mehdawi, I., Pratten, J., Spratt, D., Valappil, S., Palmer, G., & Young, A. (2008). Calcium phosphate and antibacterial agent releasing methacrylate dental composite. 3rd PEF/IADR, Sept, London. J Dent Res, 87, 0584.

Journal article

Calcium phosphate and antibacterial agent releasing methacrylate dental composite

Mehdawi, I., Pratten, J., Spratt, D., Valappil, S. P., Palmer, G., & Young, A. (2008). Calcium phosphate and antibacterial agent releasing methacrylate dental composite. PEF IADR London J Dent Res, 87, 170.

Journal article

Effect of increasing calcium content in gallium doped-phosphate based glass compositions on bacterial biofilms

Valappil, S. P., Wilson, M., & Knowles, J. C. (2008). Effect of increasing calcium content in gallium doped-phosphate based glass compositions on bacterial biofilms. 8th World Biomaterials Congress, Amsterdam, Netherlands, 0(0), 1.

Journal article

Effect of surface modification of nickel titanium alloy on bacterial attachment

Chrzanowski, W., Valappil, S. P., Pratten, J., Armitage, D. A., & Knowles, J. C. (2008). Effect of surface modification of nickel titanium alloy on bacterial attachment. 8th World Biomaterials Congress, Amsterdam, Netherlands, 0(0), 1.

Journal article

Microbial PHA biosynthesis and its applications

Roy, I., Philip, S. E., Francis, L., Rai, R., Valappil, S. P., Markiv, A., . . . Boccaccini, A. R. (2008). Microbial PHA biosynthesis and its applications. 11th International Symposium on Biodegradable Polyesters, Auckland, New Zealand, 0, 0.

Journal article

Microbial PHA biosynthesis using Gram positive and Gram negative bacteria and its applications

Philp, S., Francis, L., Rai, R., Valappil, S. P., Keshavarz, T., & Roy, I. (2008). Microbial PHA biosynthesis using Gram positive and Gram negative bacteria and its applications. COST Action 868, Bratislava, Slovak Republic, 0, 0.

Journal article

Microbial biosynthesis of PHAs and its application

Roy, I., Philip, S. E., Francis, L., Rai, R., Valappil, S. P., Markiv, A., . . . Boccaccini, A. R. (2008). Microbial biosynthesis of PHAs and its application. COST Action 868: Varna, Bulgaria, 0, 0.

Journal article

Nanoscale investigation of the effect of silver doped-phosphate based glasses on bacterial biofilms

Valappil, S. P., Chrzanowski, W., Wilson, M., & Knowles, J. C. (2008). Nanoscale investigation of the effect of silver doped-phosphate based glasses on bacterial biofilms. 8th World Biomaterials Congress, Amsterdam,Netherlands, 0(0), 1.

Journal article

Polyhydroxyalkanoate biosynthesis in <i>Bacillus cereus</i> SPV under varied limiting conditions and an insight into the biosynthetic genes involved

Valappil, S. P., Rai, R., Bucke, C., & Roy, I. (2008). Polyhydroxyalkanoate biosynthesis in <i>Bacillus cereus</i> SPV under varied limiting conditions and an insight into the biosynthetic genes involved. JOURNAL OF APPLIED MICROBIOLOGY, 104(6), 1624-1635. doi:10.1111/j.1365-2672.2007.03678.x

DOI
10.1111/j.1365-2672.2007.03678.x
Journal article

2007

Effect of silver content on the structure and antibacterial activity of silver-doped phosphate-based glasses

Valappil, S. P., Pickup, D. M., Carroll, D. L., Hope, C. K., Pratten, J., Newport, R. J., . . . Knowles, J. C. (2007). Effect of silver content on the structure and antibacterial activity of silver-doped phosphate-based glasses. ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 51(12), 4453-4461. doi:10.1128/AAC.00605-07

DOI
10.1128/AAC.00605-07
Journal article

Large-scale production and efficient recovery of PHB with desirable material properties, from the newly characterised <i>Bacillus cereus</i> SPV

Valappil, S. P., Misra, S. K., Boccaccini, A. R., Keshavarz, I., Bucke, C., & Roy, I. (2007). Large-scale production and efficient recovery of PHB with desirable material properties, from the newly characterised <i>Bacillus cereus</i> SPV. JOURNAL OF BIOTECHNOLOGY, 132(3), 251-258. doi:10.1016/j.jbiotec.2007.03.013

DOI
10.1016/j.jbiotec.2007.03.013
Journal article

The structure and properties of silver-doped phosphate-based glasses

Ahmed, I., Abou Neel, E. A., Valappil, S. P., Nazhat, S. N., Pickup, D. M., Carta, D., . . . Knowles, J. C. (2007). The structure and properties of silver-doped phosphate-based glasses. JOURNAL OF MATERIALS SCIENCE, 42(23), 9827-9835. doi:10.1007/s10853-007-2008-9

DOI
10.1007/s10853-007-2008-9
Journal article

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., & Boccaccini, A. R. (2007). Fabrication and characterization of biodegradable poly(3-hydroxybutyrate) composite containing bioglass. BIOMACROMOLECULES, 8(7), 2112-2119. doi:10.1021/bm0701954

DOI
10.1021/bm0701954
Journal article

Poly(3-hydroxybutyrate)/Bioglass® composite films containing carbon nanotubes

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

DOI
10.1088/0957-4484/18/7/075701
Journal article

Polyhydroxyalkanoate (PHA) biosynthesis from structurally unrelated carbon sources by a newly characterized <i>Bacillus</i> spp.

Valappil, S. P., Peiris, D., Langley, G. J., Hemiman, J. M., Boccaccini, A. R., Bucke, C., & Roy, I. (2007). Polyhydroxyalkanoate (PHA) biosynthesis from structurally unrelated carbon sources by a newly characterized <i>Bacillus</i> spp.. JOURNAL OF BIOTECHNOLOGY, 127(3), 475-487. doi:10.1016/j.jbiotec.2006.07.015

DOI
10.1016/j.jbiotec.2006.07.015
Journal article

Effect of increasing silver content in ternary phosphate based glass compositions on biofilms of Staphylococcus aureus

Valappil, S. P., Wilson, M., & Knowles, J. C. (2007). Effect of increasing silver content in ternary phosphate based glass compositions on biofilms of Staphylococcus aureus. 4th ASM conference on Biofilms, Qubec city, Canada, 0(0), 162.

Journal article

Effect of ternary phosphate-based glass compositions on osteoblast and osteoblast-like proliferation, differentiation and death <i>in vitro</i>

Skelton, K. L., Glenn, J. V., Clarke, S. A., Georgiou, G., Valappil, S. P., Knowles, C., . . . Jordan, G. R. (2007). Effect of ternary phosphate-based glass compositions on osteoblast and osteoblast-like proliferation, differentiation and death <i>in vitro</i>. ACTA BIOMATERIALIA, 3(4), 563-572. doi:10.1016/j.actbio.2006.11.008

DOI
10.1016/j.actbio.2006.11.008
Journal article

Nanoindentation testing of biodegradabale polymers

Torbati, M. M., Wood, R. J. K., Misra, S. K., Valappil, S. P., Boccaccini, A. R., & Roy, I. (2007). Nanoindentation testing of biodegradabale polymers. 3rd International intendation workshop, Cambridge,UK, 0(0), 1.

Journal article

PHA biosynthesis by Bacillus cereus SPV under varied nutrient conditions

Rai, R., Valappil, S. P., Keshavarz, T., & Roy, I. (2007). PHA biosynthesis by Bacillus cereus SPV under varied nutrient conditions. 1st annual workshop Biotechnical functionalisation of renewable polymeric materials, COST Action 868, Graz, Austria, 0(0), 1.

Journal article

2006

Polyhydroxyalkanoates in Gram-positive bacteria: insights from the genera <i>Bacillus</i> and <i>Streptomyces</i>

Valappil, S. P., Boccaccini, A. R., Bucke, C., & Roy, I. (2007). Polyhydroxyalkanoates in Gram-positive bacteria: insights from the genera <i>Bacillus</i> and <i>Streptomyces</i>. ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY, 91(1), 1-17. doi:10.1007/s10482-006-9095-5

DOI
10.1007/s10482-006-9095-5
Journal article

Biomedical applications of polyhydroxyalkanoates, an overview of animal testing and <i>in vivo</i> responses

Valappil, S. P., Misra, S. K., Boccaccini, A. R., & Roy, I. (2006). Biomedical applications of polyhydroxyalkanoates, an overview of animal testing and <i>in vivo</i> responses. EXPERT REVIEW OF MEDICAL DEVICES, 3(6), 853-868. doi:10.1586/17434440.3.6.853

DOI
10.1586/17434440.3.6.853
Journal article

Polyhydroxyalkanoate (PHA)/inorganic phase composites for tissue engineering applications

Misra, S. K., Valappil, S. P., Roy, I., & Boccaccini, A. R. (2006). Polyhydroxyalkanoate (PHA)/inorganic phase composites for tissue engineering applications. BIOMACROMOLECULES, 7(8), 2249-2258. doi:10.1021/bm060317c

DOI
10.1021/bm060317c
Journal article

Development of novel Polyhydroxyalkanoate/Bioglass® composite scaffolds for tissue engineering applications

Misra, S. K., Valappil, S. P., Nazhat, S. N., Torbati, M. M., Roy, I., & Boccaccini, A. R. (2006). Development of novel Polyhydroxyalkanoate/Bioglass® composite scaffolds for tissue engineering applications. 20th European Conference on Biomaterials,Nantes, France, 0(0), 1.

Journal article

Nanoindentation testing of biodegradabale polymers

Wood, R. J. K., Dan, S., Torbati, M. M., Misra, S. K., Valappil, S. P., Boccaccini, A. R., & Roy, I. (2006). Nanoindentation testing of biodegradabale polymers. CAMTEC Workshop, Cambridge, UK, 0(0), 1.

Journal article

Polyhydroxyalkanoates biosynthesis in Bacillus cereus SPV and its applications

Roy, I., Valappil, S. P., Misra, S. K., & Boccaccini, A. R. (2006). Polyhydroxyalkanoates biosynthesis in Bacillus cereus SPV and its applications. International Symposium on Biological Polyesters, ISBP, Minnesota, USA., 0(0), 1.

Journal article

2005

Effect of recovery process on the physical and mechanical properties of Polyhydroxybutyrate (PHB) extracted from a newly isolated Bacillus sp

Valappil, S. P., Misra, S. K., Boccaccini, A. R., Bucke, C., & Roy, I. (2005). Effect of recovery process on the physical and mechanical properties of Polyhydroxybutyrate (PHB) extracted from a newly isolated Bacillus sp. UKSB annual meeting, Nottingham, UK., 0(0), 1.

Journal article

Effect of various carbon sources on the production of PHAs from the newly isolated Bacillus sp

Valappil, S. P., Bucke, C., & Roy, I. (2005). Effect of various carbon sources on the production of PHAs from the newly isolated Bacillus sp. International Union of Microbiological Societies Congress, IUMS, San Fransisco, USA, 0(0), 1.

Journal article

Large scale production of P (3HB) from newly isolated Bacillus sp

Valappil, S. P., Keshavarz, T., Bucke, C., & Roy, I. (2005). Large scale production of P (3HB) from newly isolated Bacillus sp. BioMicroWorld, Badajoz, Spain, 0(0), 1.

Journal article

Natural biodegradable polymers from the Polyhydroxyalkanoate family emerging as a promising material for Biomedical Applications

Misra, S. K., Valappil, S. P., Nazhat, S. N., Roy, I., & Boccaccini, A. R. (2005). Natural biodegradable polymers from the Polyhydroxyalkanoate family emerging as a promising material for Biomedical Applications. A Forecast of the Future for Biomaterials-Professor Larry L. Hench Retirement Symposium,Imperial College London, UK, 0(0), 1.

Journal article

Novel PHA/Bioglass® composites for soft-tissue and hard-tissue engineering scaffolds

Valappil, S. P., Misra, S. K., Boccaccini, A. R., Bucke, C., & Roy, I. (2005). Novel PHA/Bioglass® composites for soft-tissue and hard-tissue engineering scaffolds. EPSRC Workshop, Swansea, UK, 0(0), 1.

Journal article

Polyhydroxyalkanoate synthases-the enzymes involved in biodegradable polymer biosynthesis

Valappil, S. P., Philip, S., Odell, M., Keshavarz, T., & Roy, I. (2005). Polyhydroxyalkanoate synthases-the enzymes involved in biodegradable polymer biosynthesis. Frontiers in Chemical Biology: Mechanistic Enzymology and Biocatalysis, Exeter, UK., 0(0), 1.

Journal article

Production of polyhydroxyalkanoates (PHAs) by Gram-positive bacteria

Valappil, S. P. (2005). Production of polyhydroxyalkanoates (PHAs) by Gram-positive bacteria. (PhD Thesis, Westminster College).

Thesis / Dissertation

2004

Biosynthesis of polyhydroxyalkanoic acid by S. coelicolor

Valappil, S. P., Bhatia, Y., Bucke, C., & Roy, I. (2004). Biosynthesis of polyhydroxyalkanoic acid by S. coelicolor. , e-polymers, The Scientific e-only polymer journal, 0(0), P_049. Retrieved from http://www.e-polymers.org/journal/abstract.cfm?abstract_Id=784

Journal article

Identification and Isolation of polyhydroxyalkanoic acids and cloning of the PHA biosynthetic genes from Bacillus cereus SPV

Valappil, S. P., Bucke, C., & Roy, I. (2004). Identification and Isolation of polyhydroxyalkanoic acids and cloning of the PHA biosynthetic genes from Bacillus cereus SPV. International Symposium on Biological Polyesters, ISBP, Beijing, China, 0(0), 1.

Journal article

2003

Production of different PHAs by S. coelicolor

Valappil, S. P., Bhatia, Y., Bucke, C., & Roy, I. (2003). Production of different PHAs by S. coelicolor. International Conference on Biopolyesters, ICBP, Tokyo, Japan, 0(0), 1.

Journal article

2002

A possible role of poly-3-hydroxybutyric acid in antibiotic production in <i>Streptomyces</i>

Verma, S., Bhatia, Y., Valappil, S. P., & Roy, I. (2002). A possible role of poly-3-hydroxybutyric acid in antibiotic production in <i>Streptomyces</i>. ARCHIVES OF MICROBIOLOGY, 179(1), 66-69. doi:10.1007/s00203-002-0500-9

DOI
10.1007/s00203-002-0500-9
Journal article

Biosynthesis of polyhydroxyalkanoic acid by S. coelicolor A3(2) M145

Valappil, S. P., Bhatia, Y., Bucke, C., & Roy, I. (2002). Biosynthesis of polyhydroxyalkanoic acid by S. coelicolor A3(2) M145. International Symposium on Biological Polyesters, ISBP, Munster, Germany, 0(0), 1.

Journal article