Humidity-stable carboxymethyl cellulose/anthocyanin films enabled by ovalbumin/sodium alginate nanocarriers and Al3+-mediated crosslinking for food freshness monitoring.
Owing to the film-forming property and biodegradability of polysaccharide matrices, carboxymethyl cellulose (CMC) is commonly used to fabricate bio-based pH-responsive films containing blueberry anthocyanins (BA). However, CMC inevitably absorbs moisture, readily triggering BA migration and reducing film color stabilit...