| Abstract The paper discusses the issues of rational use of secondary collagen-containing raw material in the food industry, namely cattle by-products. The technology of obtaining collagen hydrolysate from this type of raw material with the subsequent freeze-drying is proposed, which maximizes the level of preservation of native properties and the expands the scope of its application. The paper presents the stages of obtaining lyophilized collagen hydrolysate by biomodification of frozen cattle lips and ears. The preparation of lyophilized collagen hydrolysate was carried out as follows: the lips and ears were preliminary washed in running tap water for 20 minutes in order to remove mucus and impurities, muscle and adipose tissue was also removed; after... |
