ABSTRACT

The intention of this study was to prepare polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) films and to improve their physicochemical properties by cross-linked with amino acids. Thus, the bio-composite films/membranes of PVA/CMC were an amalgamation with L- Histidine as the crosslinker via solution casting scheme. The effect of the L-Histidine addition on blend films was explored by various physio-chemical characterisation techniques. The contact angle assessment of the as-prepared film have remained increased (47.31, 50.42, and 58.09) by the addition of L-Histidine content. The antibacterial activity was tried against certain food pathogenic bacteria. To the extent of the clear zone width of the E. coli and B. cereus bacteria were included per filmstrips and the values of which remained constantly higher than the width of assumed films. Largely, the L-Histidine cross-linked PVA/CMC film happens to be a suitable material for an antibacterial agent and food-packaging applications.

摘要

本研究的目的是制备聚乙烯醇 (PVA) 和羧甲基纤维素 (CMC) 薄膜，并通过与氨基酸交联来改善它们的物理化学性质。因此，PVA/CMC 的生物复合膜/膜是通过溶液浇铸方案与 L-组氨酸作为交联剂的融合。通过各种物理化学表征技术探索了 L-组氨酸添加对共混膜的影响。通过添加 L-组氨酸含量，所制备薄膜的接触角评估保持增加（47.31、50.42 和 58.09）。对某些食品致病菌进行了抗菌活性试验。以大肠杆菌和蜡状芽胞杆菌的透明区宽度为限每个胶片都包含细菌，其值始终高于假定胶片的宽度。很大程度上，L-组氨酸交联 PVA/CMC 薄膜恰好是抗菌剂和食品包装应用的合适材料。