Research advances in freshness indicator films based on anthocyanins and chitosan

  • WANG Kai ,
  • FU Hongjun ,
  • PENG Xianglian
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  • 1(College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China)
    2(National Engineering Laboratory for Rice and Byproducts Processing, Changsha 410004, China)

Received date: 2022-10-30

  Revised date: 2023-01-04

  Online published: 2024-03-15

Abstract

Increased consumer awareness of food safety has opened up new opportunities for packaging technology, with smart packaging based on natural colors and biopolymers being introduced as the latest technology in food packaging. This type of packaging can display the status of the food on the packaging film and assess the freshness of the food in real time based on the color change of the film. In recent years, anthocyanins have been widely used as indicators in smart packaging films, among which chitosan-based indicator films are more frequently used for freshness monitoring of food products. This paper described the composition and monitoring principle of freshness indicator films, highlighted the physical and functional properties of anthocyanin-chitosan-based indicator films and their research progress in food freshness monitoring, and pointed out the problems in the application of freshness indicator films to provide some ideas for further development of practical and accurate freshness indicator films.

Cite this article

WANG Kai , FU Hongjun , PENG Xianglian . Research advances in freshness indicator films based on anthocyanins and chitosan[J]. Food and Fermentation Industries, 2024 , 50(4) : 365 -371 . DOI: 10.13995/j.cnki.11-1802/ts.034149

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