Soybean milk defoamer and preparation method thereof

Abstract

The invention relates to a soybean milk defoamer and a preparation method thereof. The preparation method of the soybean milk defoamer comprises the steps that phospholipase A1, phospholipase A2 and phospholipase D are utilized to carry out enzymolysis ester bond on granulesten and soybean oil, so that the mixture which has the main compositions of phospholipid, glycerol, fatty acid with different carbon chain lengths, and soybean oil is formed, and the oleophylic and defoaming capabilities are reinforced, the HLB (hydrophile-lipophile balance) value is within the range of 2.4-2.8, the efficient and rapid defoaming effect is realized, and the use level of the defoamer is reduced due to the strong defoaming capability. As the soybean milk defoamer is a natural product and reaches the food security level, the use level is not strictly limited, and the use level reaching the defoaming effect is recommended; the phospholipid has the physiological health care efficacy, and the nutrition of the soybean milk is increased with the adoption of the soybean milk defoamer; and the soybean milk defoamer can be hermetically contained in a container for storage at the temperature of 4 DEG C below zero, and the use method of the soybean milk defoamer is as simple as that of a chemical defoamer.

Description

technical field [0001] The invention relates to a soybean milk defoamer and a preparation method thereof. Background technique [0002] Because soybeans contain saponin and soybean milk has the characteristics of film and foam, a large amount of foam will appear from time to time during the processing of soybean products such as grinding, boiling, and separation. The existence of foam not only affects product quality and output, but also It brings a lot of inconvenience to the production operation process. Therefore, the elimination control of foam has become an indispensable link in the production of soybean products. [0003] The formation of foam is related to the contact between soybean milk and air, so there is a physical defoaming method for soybean milk production by controlling the contact between air and soybean milk (patent application number 88105154.3), but due to its poor mechanical practicability and high requirements for operators , so most of them use defoam...

AI Technical Summary

Problems solved by technology

Natural oil is the earliest defoamer used. It is easy to source, low in price, simple to use, and high in safety, but it has large dosage, low benefit, poor sanitation, and affects the quality of soybean products, which limits the use of natural oil as a defoamer. Natural defoamers have the application of using soybean lecithin to assist in defoaming, but due to the excessive molecular weight of soybean lecithin, the ability to dissolve into foam is limited, so its defoaming ability is limited, so it can only be used as an auxiliary defoamer and cannot be used alone

Although chemically synthesized defoamers have high defoaming efficiency, they have certain chemical toxicity