4.7 Article

Chitosan-poly(vinyl alcohol) intelligent films fortified with anthocyanins isolated from Clitoria ternatea and Carissa carandas for monitoring beverage freshness

期刊

出版社

ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.04.027

关键词

Anthocyanin; Clitoria ternatea; Carissa carandas; Intelligent packaging; Beverage freshness

资金

  1. TRF Senior Research Scholar [RTA6180006]
  2. Thailand Research Fund
  3. Prince of Songkla University, Hatyai, Songkla, Thailand

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Biodegradable chitosan-poly(vinyl alcohol) films containing natural anthocyanin-rich extracts were prepared and employed as intelligent indicators for monitoring beverages freshness. The films showed compact structure, enhanced radical scavenging efficacy, and color changes at different pH levels. Additionally, the films demonstrated good cell compatibility and pH sensing properties, indicating their potential for beverage freshness monitoring.
Biodegradable chitosan-poly(vinyl alcohol) films containing natural anthocyanin-rich extracts were prepared using solvent casting method and employed as intelligent indicators for monitoring beverages freshness. The sur -face and cross-sectional scanning electron micrograph indicated a compact structure for the intelligent films, whereas the atomic force micrograph indicated a 16.22 and 20.31 nm increase in surface roughness for Clitoria ternatea and Carissa carandas extract incorporated films, respectively. Moreover, the test films demonstrated en-hanced radical scavenging efficacy. The extracts and anthocyanin incorporated films presented excellent colori-metric changes at pH 2 to 8. In addition, the C. ternatea test films showed changes in color for juice stored at 25 degrees C after 72 h. Photo-degradability results indicated stability of test films stored in dark at 4 degrees C and 25 degrees C, whereas leaching study indicated the release of <= 2.0% anthocyanin after 24 h. The cytocompatibilty assay showed that the test and control films were biocompatible with a viability of >80% on HaCat cells. The results demonstrated that the incorporation of anthocyanins-rich extracts into chitosan-poly(vinyl alcohol) did not significantly inter -fere with the films properties (p > 0.05). The natural anthocyanin incorporated films demonstrated good pH sensing property that could be further explored for monitoring of beverages freshness. (c) 2021 Elsevier B.V. All rights reserved.

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