Development of chitosan-based smart active films incorporating soy protein isolate-derived metal nanoenzymes and purple carrot extract for blueberry preservation and beef freshness monitoring.

Ensuring food quality while minimizing spoilage requires development of functional food packaging that combines extended shelf life with visual freshness monitoring. Here, a Zn-soy protein isolate artificial nanoenzyme (ZnSP ANM) was fabricated via m…

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