High-sensitivity intelligent packaging films harnessing rose anthocyanins and hydrophilic silica aerogel for visual food freshness monitoring  

作　　者：Wenjun Wu Luman Zheng Jiahao Yu Liming Liu Gulden Goksen Ping Shao 

机构地区：[1]Department of Food Science and Technology,Zhejiang University of Technology,Zhejiang,Hangzhou,China [2]Department of Food Technology,Vocational School of Technical Sciences at Mersin Tarsus Organized Industrial Zone,Tarsus University,Mersin,Turkey [3]Eco-Industrial Innovation Institute ZJUT,Zhejiang University of Technology,Zhejiang,Quzhou,China

出　　处：《Food Quality and Safety》2024年第1期179-189,共11页食品品质与安全研究（英文版）

基　　金：Zhejiang Province Key Research and Development Programs(No.2023C02006),China.

摘　　要：The enhancement of the sensitivity for anthocyanin-based indicator films in food freshness monitoring in real time is important for application.In this study,hydrophilic silica aerogel(SiO2 NA)was incorporated into corn starch(CS)/chitosan(CH)/rose anthocyanins(RACNs)-encapsulated potato amylopectin nanoparticles(APNPs)composite film to increase the sensitivity for shrimp freshness detection.The microstructure of films revealed that the gas absorption capacity was improved by amorphous SiO2 NA via hydrogen interactions.The pore size(1.74–5.60 times),pore volume(3.92–5.60 times),and specific surface area(2.21–2.34 times)of films increased with the addition of SiO2 NA.The sensing of NH3 and pH and the reversibility of films were also reinforced.Meanwhile,the pH-responsive films containing SiO2 NA changed visibly in color from purple–red to orange–gray and finally to gray,enabling effective monitoring of shrimp freshness during storage at 4°C.Thus,anthocyanin-based indicator films with improved sensitivity by adding SiO2 NA were successfully designed for monitoring shrimp freshness.

关 键 词：Hydrophilic silica aerogel anthocyanins sensitivity PH-RESPONSIVE shrimp freshness intelligent packaging 

分 类 号：TS206[轻工技术与工程—食品科学]