Preparation method of easily-degradable food preservative film with fish scale gelatin matrix

Abstract

The invention discloses an easily-degradable food preservative film with fish scale gelatin matrix. The invention belongs to the technical field of aquatic product processing. The preservative film isprepared from the following components in percentage by weight: 30%-40% of fresh water fish scale gelatin, 1%-5% of wheat starch, 0.01%-0.05% of vitamin C, 0.05%-0.1% of an essential oil, 1%-5% of 100u / ml glucoamylase, 1%-3% of a 5% magnesium chloride solution and the balance of deionized water. Fresh water fish scales are subjected to water washing, alkali washing, acid washing, hot water extraction and the like to prepare scale gelatin, and the scale gelatin is used as a main raw material to prepare the easily-degradable food preservative film with the scale gelatin matrix. According to a preparation method, wheat soluble starch, 100u / ml glucoamylase, and the 5% magnesium chloride solution are added, a degradation promoter is obtained thorugh mixing of the above three components, so that the propagation of soil aspergillus oryzae can be effectively promoted, and the soil aspergillus oryzae can accelerate the degradation rate of protein products, thereby obtaining the preservative film which is extremely easy to degrade.

Description

technical field [0001] The invention belongs to the technical field of aquatic product processing, and in particular relates to a method for making a fish scale gelatin-based easily degradable food preservation film. Background technique [0002] According to statistics, the global output of plastic products increased from 230 million tons in 2005 to 348 million tons in 2017, with an average annual growth rate of 3.51%. However, with the increasing awareness of global environmental protection, people pay more attention to degradable food preservation film. Compared with non-degradable packaging materials, these degradable packaging materials can be used as food and packaging materials. The unique advantages have won a lot of praise, especially in the fields of organic environmental protection food, aquaculture and other fields, and it can avoid the harm caused by indigestion and degradation due to ingestion of packaging by mistake. [0003] Protein, starch and other raw mat...

AI Technical Summary

Problems solved by technology

However, the starch-based easily degradable food preservation film has many disadvantages, such as insufficient mechanical strength, poor water resistance, etc.