中北大学学报（自然科学版）2024，Vol.45Issue(1)：114-122,9.DOI:10.3969/j.issn.1673-3193.2024.01.015
k-卡拉胶复合紫薯花青素指示膜的制备及应用
Preparation and Application of k-Carrageenan Complex Purple Potato Anthocyanin Indicator Membrane
摘要
Abstract
The pH response indicator membranes were prepared by solvent casting with k-carrageenan and purple potato anthocyanins at different pH values(i.e.,4,5,6,7).The structures of the indicator mem-branes were characterized by UV-vis and FT-IR.The thickness,mechanical properties,rheological prop-erties,and full-fat sterilized emulsion deterioration monitoring test of the film were evaluated.The results showed that k-carrageenan and purple sweet potato anthocyanins could bind by electrostatic or hydrogen bonding.Compared with pure carrageenan membranes,the tensile strength of the membranes formed at pH=4 and pH=5 was slightly increased,and the tensile strength of the membranes formed at pH=6 or pH=7 was significantly increased((13.13±0.78)MPa,(12.99±0.56)MPa),and the elongation at break decreases with the increase of pH.Anthocyanins of purple potato had no significant effect on the thermal stability of the membrane.The pH response indicated that the membrane exhibits a distinct color change in different buffer solutions.After fresh milk was stored at 25℃for 72 h,the P7 membrane showed obvious color change.So the membrane has good physical properties and obvious pH response performance,and has potential application value in food preservation intelligent packaging.关键词
智能包装/紫薯花青素/pH响应/k-卡拉胶/牛奶Key words
intelligent packaging/purple potato anthocyanins/pH response/k-carrageenan/milk分类
轻工纺织引用本文复制引用
石英,刘盼盼,高莉,杨俊燕,徐宏宇..k-卡拉胶复合紫薯花青素指示膜的制备及应用[J].中北大学学报（自然科学版）,2024,45(1):114-122,9.基金项目
山西省回国留学人员科研资助项目(2020-118) （2020-118）
医药生物技术山西省重点实验室开放课题基金资助项目(KF202002) （KF202002）
山西省研究生教育教学改革课题(2022YJJG185) （2022YJJG185）
山西省研究生创新项目(2022Y616,2023KY604,2023SJ203) （2022Y616,2023KY604,2023SJ203）
