Preparation of One Kind of Donkey-Hide Gelatin(E'jiao)Cake for Long Shelf Life
Most of donkey-hide gelatin(E'jiao)cake products on the market have a shelflife of one year.The main reason is that after long-term storage,the surface and internal moisture evaporate,which in turn causes donkey-hide gelatin(E'jiao)cake to lose water,become hard,and difficult to swallow.Donkey-hide gelatin(E'jiao)cake has a high oil content,and it is easy to deteriorate fat after long-term storage.In order to solve the problem,carrying out research on the water retention and antioxidant properties,the optimal preparation process of one kind of donkey-hide gelatin(E'jiao)cake for long shelflife was determined.The moisture retention agents were selected and determined.The mass fraction of polydextrose and SPI,the ratio of polydextrose to SPI,and the amount of antioxidant vitamin C were screened by single factor experiment.The accelerated test verified that the shelf life of the donkey-hide gelatin(E'jiao)cake prepared by the research could reach two years.The optimal process was to prepare donkey-hide gelatin(E'jiao)cake with 20％donkey-hide gelatin(E'jiao),20％black sesame,15％walnut,20％rice wine,8％rock sugar,14.4％polydextrose,1.6％SPI,and 1％vitamin C.
donkey-hide gelatin(E'jiao)cakemoisture retention agentpolydextrosevitamin C
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