文献类型：期刊文献

英文题名：Intelligent pH-sensing film based on polyvinyl alcohol/cellulose nanocrystal with purple cabbage anthocyanins for visually monitoring shrimp freshness

作者：He, Yunxia[1];Lu, Lun[1,4];Lin, Yanyun[1];Li, Ruyi[1];Yuan, Yuan[1];Lu, Xuli[1];Zou, Ying[1];Zhou, Wei[1,5];Wang, Zhuo[2,3];Li, Jihua[1]

机构：[1]Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Key Lab Trop Crop Prod Proc, Minist Agr & Rural Affairs, Zhanjiang 524001, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Guangdong, Peoples R China;[3]China Agr Univ, Dept Nutr & Hlth, Key Lab Precis Nutr & Food Qual, Minist Educ, Beijing 100083, Peoples R China;[4]Yunnan Agr Univ, Coll Trop Crops, Puer 665099, Yunnan, Peoples R China;[5]Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Zhanjiang 524001, Guangdong, Peoples R China

年份：2022

卷号：218

起止页码：900

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：SCI-EXPANDED(收录号：WOS:000861234100004)、、EI(收录号：20240815593996)、Scopus(收录号：2-s2.0-85135193879)、WOS

基金：This work was supported by the Natural Science Foundation of Hainan Province of China [grant number 321QN303 and 321QN306] , the Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences in China [grant number 1630122022005] , the Innovation Team of Modern Agricultural Industry Technology System in Guangdong Province of China [grant number 2022KJ116] , and the Guangdong Special Support Plan Science and Technology Innovation Young Talents Project [grant number 2019TQ05N133] . Innovative and Entrepreneurship Team Project for Pilot Program of Zhanjiang City (grant number 211207157080998)

语种：英文

外文关键词：Intelligent pH-sensing film; Cellulose nanocrystals; Shrimp freshness

外文摘要：We aimed to prepare a new pH-sensing film based on the immobilization of purple cabbage anthocyanins (PCA) into Polyvinyl alcohol (PVA) reinforced by cellulose nanocrystals (CNC). FT-IR, XRD and TGA were used to assess the intermolecular interactions and thermo-stability of films. The addition of CNC and PCA resulted in an enhancement in UV-vis barrier, mechanical properties and moisture resistance. Inclusion of PCA imparted intelligent properties to the films. PCA-loaded films displayed strong visually detectable colorimetric responses to pH (2-13) and volatile ammonia. When applied to monitor shrimp freshness at 4 C, PVA/CNC films containing 0.6 % PCA exhibited conspicuous color fluctuations from purple to gray blue upon deterioration. As a result, PVA/CNC-PCA colorimetric films were considered as intelligent packaging labels with significant mechanical, water vapor barrier properties and pH-sensing qualities for visual quality evaluation of fresh seafood products.