This invention relates to the field of
food packaging and preservation technology, and discloses an intelligent collaborative preservation film for transporting chilled fish and its preparation method, comprising the following components by
mass: 10-20 parts
fish scale collagen, 20-30 parts
fish skin gelatin, 10-18 parts
sodium caseinate, 5-12 parts
pectin, 0.5-2 parts blueberry anthocyanins, 1-3 parts citrus extract, 5-10 parts glycerin, 5-10 parts
sodium alginate, and 0.1-0.5 parts
nano zinc oxide. The technical problem to be solved by this invention is to provide an intelligent synergistic preservation film for the transportation of chilled fish and its preparation method. It constructs a
sodium caseinate-
pectin dual-substrate
system and builds an integrated preservation mechanism with three functions:
physical protection, active preservation, and intelligent indication. The components form a quadruple synergistic effect of double cross-linking,
polyelectrolyte composite, antibacterial, and
antioxidant properties. It has excellent
mechanical strength and barrier properties. At 4°C, it can extend the
shelf life of chilled fish from 5 days to 12 days. Moreover, the
raw material cost is low and it is completely biodegradable. It is suitable for long-distance
cold chain transportation and preservation of chilled fish and has broad industrialization prospects.