Process for producing citric acid caseins by using yak milk dregs as raw materials

Abstract

The invention provides a process for producing citric acid caseins by using yak milk dregs as raw materials. The caseins are produced by using Cream cheeses (milk dregs), which are formed by extracting butters from yak milk by Tibetan herdsmen and fermenting and coagulating the butters, as raw materials and using citric acid as a milk coagulant; the technical process is as follows: preparing raw materials, adding alkali to dissolve the raw materials, filtering the dissolved raw materials to remove impurities, centrifugally degreasing the filtered raw materials, sterilizing the degreased raw materials for a short time at a high temperature, adding acid to the sterilized raw materials for coagulation so as to obtain curds, washing the curds, dehydrating the curds, granulating the curds, drying particles, checking qualities of the particles and obtaining finished products, wherein the dissolving of the milk dregs is adjusting the pH value of a mixed material into 9.5 by using a sodium hydroxide solution with concentration of 7.5 %; a centrifugal separator with rotation speed of 6800 rpm is used for degreasing; the sterilizing temperature is 90-95 DEG C and the sterilizing time is 2-8 seconds; and acid coagulation pH value is 3.8-4.1. The product is ivory particles with milk fragrance and no odor; and in terms of dry basis, the content of proteins is not less than 92.00 %, the content of fats is not more than 1.50 %, and the content of water is not more than 12.00 %.

Description

Technical field: [0001] The present invention relates to the production process of casein in food or light chemical industry, specifically a kind of dry cheese which is fermented and condensed after extracting ghee from yak milk by Tibetan herdsmen, that is, milk dregs as raw material, and yak milk dregs as raw material to produce Process of casein citrate. Background technique: [0002] Casein, also known as milk casein, casein and casein, as a basic raw material with unique properties, is widely used in food, medicine, textile, leather, paint, papermaking and packaging and other fields. With the rapid development of various industries in the national economy and the improvement of the material consumption level of the people of all ethnic groups, the demand for casein is increasing, and the quality requirements for casein products are also continuously improving. [0003] At present, the basic situation of R&D and production of casein at home and abroad is as follows: (1)...

AI Technical Summary

Problems solved by technology

[0004] At present, there are still some problems in the research and development and production of casein, mainly including: (1) Although the quality of casein produced from fresh milk is good, the cost is high and the market competitiveness is weak; (2) Chemical raw materials such as hydrochloric acid are used The casein produced as a coagulant has certain quality, hygiene and safety defects; (3) The cost of casein produced with enzymes as a coagulant is relatively high; To reduce the cost, but it is necessary to solve the problems of many impurities, oxidative rancidity, sanitation and safety