Indole-3-acetic acid/diol based pH-sensitive biological macromolecule for antibacterial, antifungal and antioxidant applications

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• 作者：Chitra G.^a ; ^b ; ^{chitramuralikrishnan@gmail.com} ; Franklin D.S.^c ; ^{loyolafrank@yahoo.co.in} ; Sudarsan S.^c ; ^{srsudarsan29@gmail.com} ; Sakthivel M.^d ; ^{msakthi81986@gmail.com} ; Guhanathan S.^e ; ^{sai_gugan@yahoo.com}
• 关键词：Citric acid ; Indole-3-acetic acid ; Swelling equilibrium ; Antifungal activity ; Antioxidant activity ; Cytotoxicity
• 刊名：International Journal of Biological Macromolecules
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：95
• 期：Complete
• 页码：363-375
• 全文大小：3393 K
• 卷排序：95

文摘

Indole-3-acetic acid (IAA)/diol based pH-sensitive biopolymeric hydrogels with tunable biological properties (cytotoxicity, anti-oxidant and anti-fungal) have been synthesized via condensation polymerization. The present study focused on the synthesis of heterocyclic hydrogel using citric acid (CA), indole-3-acetic acid (IAA) and diethylene glycol (DEG) by condensation polymerization. The hydrogels revealed a pH-sensitive swelling behaviour, with increased swelling in acidic media, then turns to decreased the swelling in the basic media. The hydrogel samples were tested for antifungal activity against Aspergillus fumigates, Rhizopusoryzae and Candida albicans at different concentrations using ketoconazole as positive control and DMSO as negative control for antifungal activity. Antioxidant activity increasing nature in DPPH than NO radical compared with rutin and confirmed non toxic property using cytotoxicity analysis. The biopolymeric hydrogels were characterized by Fourier transform infrared (FT-IR) spectroscopy, 1H NMR,13C NMR, TGA, DSC followed by scanning electron microscopy (SEM). Such hydrogels with antioxidant properties is recommended for medical applications such as bandages, catheters, drains and tubes to prevent infection.