A fast-response visual indicator film based on polyvinyl alcohol/ methylcellulose/black wolfberry anthocyanin for monitoring chicken and shrimp freshness
文献类型： 外文期刊
作者： Wang, Debao 1 ; Wang, Xinxia 1 ; Sun, Zhilan 1 ; Liu, Fang 1 ; Wang, Daoying 1 ;
作者机构： 1.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing 210014, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China
3.Inner Mongolia Acad Agr & Anim Husb, Inst Agr & Anim Prod Proc, Hohhot 010000, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Cold Chain Logist Technol Agroprod, Nanjing 210014, Peoples R China
关键词： Biodegradable material; Black wolfberry anthocyanin; Visual indicator film; Color response; Freshness monitoring
期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：8.749； 五年影响因子：8.737 ）
ISSN： 2214-2894
年卷期： 2022 年 34 卷
页码：
收录情况： SCI
摘要： Natural anthocyanins are considered favorable indicators for new sensing materials because of their wide pH color range. Here, a smart visual indicator film was developed by introducing black wolfberry (BW) anthocyanins to a solid matrix composed of polyvinyl alcohol (PVOH) and methylcellulose (MC). Fourier transform infrared and X-ray showed that the introduction of BW anthocyanins enhanced hydrogen-bond interactions among the polymers and the anthocyanins were well fixed in the polymer matrix. 5 % BW could improve the stability of the PVOH/MC/BW and increase its tensile strength and breakage elongation by 63.2 % and 53.0 %, respectively. Optical observations and freshness monitoring suggested that the film loaded with 5 % BW could respond to acidic and basic vapors within 10 s and as low as 25 ppm NH3 in chicken and shrimp during storage at 4 degrees C. Therefore, PVOH/MC/BW-5% may potentially be used as a smart sensor to determine freshness in practical applications.
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