Properties of Functional Films Based on Chitosan Derivative with Gallic Acid

• Published in: Applied biochemistry and microbiology Vol. 54; no. 5; pp. 484 - 490
• Main Authors: Lun’kov, A. P., Shagdarova, B. Ts, Zhuikova, Yu. V., Il’ina, A. V., Varlamov, V. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2018; Springer Nature B.V
• Subjects: Antimicrobial agents; Antioxidants; Biochemistry; Biomedical and Life Sciences; Chitosan; E coli; Gallic acid; Life Sciences; Medical Microbiology; Microbiology; Moisture content; Molecular weight; Polymers; Thin films; Water content; chitosan conjugates; chitosan; antimicrobial properties; antioxidant properties; gallic acid
• ISSN: 0003-6838; 1608-3024
• DOI: 10.1134/S0003683818050137

Conjugates of chitosan (molecular weight 28 and 830 kDa) with gallic acid were synthesized by a reaction initiated by a free radical. The conjugates contained 106 and 119 mg of polyphenol per g of polymer. Thin films were obtained from solutions of synthesized chitosan derivatives, and their physico-chemical characteristics (thickness of 0.058–0.076 mm and moisture content of 7.92–9.44%), as well as the antioxidant (inhibiting activity with respect to 2,2-diphenyl-1-picrylhydrazyl) and antimicrobial properties, were studied in relation to
Staphylococcus epidermidis
and
Escherichia coli
.