In recent years,pH/ammonia responsive natural dyes have become a hot research topic in the development of intelligent packaging materials.This research uses gelatin and anthocyanins as raw materials to prepare gelatin/anthocyanin intelligent color packaging composite films by casting.The microstructure,antioxidant properties and transmittance of gelatin/anthocyanin composite are measured using scanning electron microscopy,DPPH method and UV spectrophotometer,respectively.The results showed that the addition of anthocyanins increased the surface roughness of the gelatin/anthocyanin composite film and improved its antioxidant performance,but reduced the transmittance of the composite film.In addition,the intelligent color food packaging film can effectively monitor the freshness of pork and yogurt.
关键词
明胶/花青素/流延法/显色包装膜
Key words
Gelatin/Anthocyanin/Casting/Coloring Packaging Film
维普
万方数据