Physicochemical and antioxidant properties of tannic acid crosslinked cationic starch/chitosan based active films for ladyfinger packaging application

活性包装 食品包装 壳聚糖 材料科学 极限抗拉强度 化学工程 聚合物 阳离子聚合 单宁酸 抗氧化剂 淀粉 接触角 聚乙烯 核化学 复合材料 化学 高分子化学 有机化学 食品科学 工程类
作者
Lingaraj Kariyappa Kurabetta,Saraswati P. Masti,Manjunath P. Eelager,Manjushree Nagaraj Gunaki,Suhasini Madihalli,Ajitkumar Appayya Hunashyal,Ravindra B. Chougale,S. K. Praveen Kumar,Arihant Jayawant Kadapure
出处
期刊:International Journal of Biological Macromolecules [Elsevier]
卷期号:253: 127552-127552 被引量:13
标识
DOI:10.1016/j.ijbiomac.2023.127552
摘要

In the present study, cationic starch (CS)/chitosan (CH) incorporated with tannic acid (TA)(CSCT) eco-friendly films were prepared by employing an inexpensive solvent casting technique. Influence of TA on the physicochemical and antimicrobial properties of CS/CH polymer matrix were studied. The FTIR findings and homogeneous, dense SEM micrographs confirms the effective interaction of TA with CS/CH polymer matrix. CSCT-3 active film displayed tensile strength of 26.99±1.91 MPa, which is more substantial than commercially available polyethylene (PE) (12–16 MPa) films. The active films exhibited excellent barrier properties against moisture and water, supported by increased water contact angle values (86.97±0.29°). Overall migration rate of active films was found to be below the permitted limit of 10mg/dm2. The active films showed around 56% of degradation in soil within 15 days. Besides, the active films showed concurring impact against food borne pathogens like E. coli, S. aureus and C. albicans. The CSCT-3 active film presented 90.83% of antioxidant capacity, demonstrating the effective prevention of food oxidation related deterioration. Ladyfinger packaging was inspected to examine the ability of active films as packaging material resulted in effectively resisting deterioration and extending shelf life in comparison with traditional PE packaging.
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