Abstract:A novel indicator film was produced with N‐glutaryl chitosan (ChGA) as a matrix and butterfly pea flower anthocyanin (BPA) as a dye. The synthesis of ChGA was achieved by the reaction of chitosan (Ch) and glutaric anhydride (GA), which resulted in the structural alteration of Ch, with carboxylic groups being present in ChGA. The ChGA–BPA film demonstrated higher sensitivity to changes in pH, a more compact structure, and more hydrophilic properties compared with Ch‐BPA film. The ChGA–BPA film demonstrated anti… Show more
With growing consumer conscience of eating fresh and nutritious food, arises a demand for freshness indicators to build consumer trust and brand value. Active and Intelligent packaging system helps extend...
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