Poly(3-hydroxybutyrate)-ethyl cellulose based bio-composites with novel characteristics for infection free wound healing application

详细信息    查看全文

• 作者：Hafiz M.N. Iqbal^a ; ^{hafiz.iqbal@my.westminster.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; Godfrey Kyazze^a ; Ian Charles Locke^a ; Thierry Tron^b ; Tajalli Keshavarz^a ; ^{t.keshavarz@westminster.ac.uk" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ethyl cellulose ; Bio-composite ; HaCaT compatible
• 刊名：International Journal of Biological Macromolecules
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：81
• 期：Complete
• 页码：552-559
• 全文大小：6862 K

文摘

A series of bio-composites including poly3-hydroxybutyrate [P(3HB)] grafted ethyl cellulose (EC) stated as P(3HB)-EC were successfully synthesised. Furthermore, natural phenols e.g., p-4-hydroxybenzoic acid (HBA) and ferulic acid (FA) were grafted onto the newly developed P(3HB)-EC-based bio-composites under laccase-assisted environment without the use of additional initiators or crosslinking agents. The phenol grafted bio-composites were critically evaluated for their antibacterial and biocompatibility features as well as their degradability in soil. In particular, the results of the antibacterial evaluation for the newly developed bio-composites indicated that 20HBA-g-P(3HB)-EC and 15FA-g-P(3HB)-EC bio-composites exerted strong bactericidal and bacteriostatic activity against Gram⁻E. coli NTCT 10418 as compared to the Gram⁺B. subtilis NCTC 3610. This study shows further that at various phenolic concentrations the newly synthesised bio-composites remained cytocompatible with human keratinocyte-like HaCaT skin cells, as 100% cell viability was recorded, in vitro. As for the degradation, an increase in the degradation rate was recorded during the soil burial analyses over a period of 42 days. These findings suggest that the reported bio-composites have great potential for use in wound healing; covering the affected skin area which may favour tissue repair over shorter periods.