Intelligent pH-sensing film based on polyvinyl alcohol/cellulose nanocrystal with purple cabbage anthocyanins for visually monitoring shrimp freshness
文献类型： 外文期刊
作者： He, Yunxia 1 ; Lu, Lun 1 ; Lin, Yanyun 1 ; Li, Ruyi 1 ; Yuan, Yuan 1 ; Lu, Xuli 1 ; Zou, Ying 1 ; Zhou, Wei 1 ; Wang, Zhuo 2 ; Li, Jihua 1 ;
作者机构： 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
关键词： Intelligent pH-sensing film; Cellulose nanocrystals; Shrimp freshness
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.025； 五年影响因子：7.626 ）
ISSN： 0141-8130
年卷期： 2022 年 218 卷
页码：
收录情况： SCI
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.
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