Method for prolonging milk fresh-keeping time by utilizing CO2 micro-nano bubbles

Abstract

The invention discloses a method for prolonging milk fresh-keeping time by utilizing CO2 micro-nano bubbles, which belongs to the technical field of milk fresh-keeping. The method comprises the following steps: checking and accepting raw milk: checking and accepting the raw milk in three aspects of sensory examination, physical and chemical indexes and microbiological examination; mechanically filtering the milk: filtering the milk by using milk filter paper under the pressure condition of 50kPa; mixing the milk and CO2 and then introducing a mixture into a micro-nano bubble device, and forming a milk-CO2 micro-nano bubble mixed system; and storing the milk-CO2 micro-nano bubble mixed system obtained in the above step 3 in a milk storage tank which is cleaned, disinfected and sterilized inadvance. The problems of microbial pollution and the like in the transportation process from a pasture to a processing factory in the traditional milk processing process are solved by utilizing the small bubble size, high solubility, high adsorption rate, low rising speed in milk and the bacteriostatic action of CO2 of the micro-nano bubbles, and the effect of better prolonging the fresh-keepingperiod of the milk is achieved.

Description

technical field [0001] The invention belongs to the technical field of milk preservation, and in particular relates to a 2 A method for prolonging the preservation time of milk by micro-nano bubbles. Background technique [0002] With the increasing level of my country's national economy, people's income and living standards continue to rise, and people have a higher pursuit of healthy diet. On the basis of eating "full", people pursue more nutritious, healthy, hygienic and convenient, healthy drinks with various flavors. Milk is one of the oldest natural beverages, known as white blood. Milk is rich in nutrients such as protein, fat, vitamins and minerals. Milk protein contains essential amino acids for the human body; milk fat is mostly short-chain and medium-chain fatty acids, which are easily absorbed by the human body; the proportion of potassium, phosphorus, calcium and other minerals is reasonable and easy for the human body to absorb. [0003] Currently, there ar...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the current problem of short milk preservation period during the transportation of milk raw materials and before processing, and to provide a method that utilizes CO 2 A method for prolonging the freshness of milk with micro-nano bubbles, which directly uses milk as a liquid carrier and CO 2 The gas is initially mixed, and then the mixed solution is passed into the micro-nano bubble pump head to form a 2 Milk with micro-nano bubbles, stored in pre-cleaned and sterilized milk storage tanks, using CO 2 Inhibit the growth of microorganisms in milk, so as to prolong the freshness of milk

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