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Fabrication of multifunctional ethyl cellulose/gelatin-based composite nanofilm for the pork preservation and freshness monitoring

文献类型： 外文期刊

作者： Wu, Jia-hui 1 ; Liao, Jia-hui 1 ; Hu, Teng-gen 3 ; Zong, Min-hua 1 ; Wen, Peng 2 ; Wu, Hong 1 ;

作者机构： 1.South China Univ Technol, Sch Food Sci & Engn, Guangdong Prov Key Lab Green Proc Nat Prod & Prod, Guangzhou 510640, Peoples R China

2.South China Agr Univ, Coll Food Sci, Guangdong Prov Key Lab Food Qual & Safety, Guangzhou 510642, Peoples R China

3.Sericultural & Agrifood Res Inst, Guangdong Acad Agr Sci, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc,Minist Agr, Guangzhou 510640, Peoples R China

关键词： Electrospinning; Intelligent nanofilm; Multifunctional properties; Pork freshness and preservation

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2024 年 265 卷

页码：

收录情况： SCI

摘要： In this study, an active and intelligent nanofilm for monitoring and maintaining the freshness of pork was developed using ethyl cellulose/gelatin matrix through electrospinning, with the addition of natural purple sweet potato anthocyanin. The nanofilm exhibited discernible color variations in response to pH changes, and it demonstrated a higher sensitivity towards volatile ammonia compared with casting film. Notably, the experimental findings regarding the wettability and pH response performance indicated that the water contact angle between 70 degrees and 85 degrees was more favorable for the smart response of pH sensitivity. Furthermore, the film exhibited desirable antioxidant activities, water vapor barrier properties and also good antimicrobial activities with the incorporation of epsilon-polylysine, suggesting the potential as a food packaging film. Furthermore, the application preservation outcomes revealed that the pork packed with the nanofilm can prolong shelf life to 6 days, more importantly, a distinct color change aligned closely with the points indicating the deterioration of the pork was observed, changing from light pink (indicating freshness) to light brown (indicating secondary freshness) and then to brownish green (indicating spoilage). Hence, the application of this multifunctional film in intelligent packaging holds great potential for both real -time indication and efficient preservation of the freshness of animal-derived food items.

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