花青素
蝶豆
果胶
淀粉
食品科学
化学
食品包装
银纳米粒子
活性包装
抗氧化剂
纳米颗粒
材料科学
纳米技术
有机化学
病理
替代医学
医学
作者
Yinjuan Cao,Zhaoyang Song,Chun‐Juan Dong,Li Zhang,Qunli Yu,Ling Han
标识
DOI:10.1016/j.ijbiomac.2024.133106
摘要
Potato oxidized hydroxypropyl starch (POHS)/pectin (P) functional and smart beef freshness indicator films were prepared using butterfly pea (Clitoria ternatea) anthocyanin (BA) and silver nanoparticles (AgNPs). BA exhibited significant pH-responsive color changes. BA and AgNPs were evenly distributed within a polymer matrix to create a compatible film with POHS/P. The films containing BA and AgNPs had good UV resistance and maintained strong mechanical strength, barrier properties, and color stability. The color of the indicator film changed from purple to green when exposed to ammonia, with the 1 % POHS/P/BA/AgNPs film showing the most sensitive response. The films also demonstrated strong antibacterial and antioxidant properties. The freshness of beef was monitored using 1 % POHS/P/BA/AgNPs films and was identified as sub-fresh and spoiled on days 4 and 7, respectively. The relationship between the color change of the indicator label and the freshness of chilled beef was established: purple for fresh meat, blue for less fresh meat, and green for spoiled meat. Thus, the new POHS/P/BA/AgNPs film can serve as a smart packaging material to indicate food freshness and extend shelf life. These results suggest that POHS/P/BA/AgNPs films have significant potential as an active and smart food packaging material.
科研通智能强力驱动
Strongly Powered by AbleSci AI