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Preparation method of cow milk with low lactose content

A low-lactose and milk technology, applied in dairy products, milk preparations, applications, etc., can solve the problems of enzyme inactivation cost, production cost reduction, complicated operation, etc., and achieve the effect of solving lactose intolerance

Inactive Publication Date: 2015-01-07
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of producing lactase has the disadvantages of cumbersome process, complicated operation, easy inactivation of the enzyme and high cost; however, the permeabilized cell lactase produced by modern biotechnology not only greatly reduces the production cost, but also retains the enzyme to the greatest extent. vitality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 1000g of fresh milk and pasteurize it at 85°C for 15S. After cooling, add 0.5g of permeabilized lactase, stir at the pH value of 6.6 and the temperature of 39°C for 2 hours, and then carry out 95°C for 5 minutes after hydrolysis. Secondary sterilization and cooling to obtain the finished product, namely low-lactose milk.

[0016] It is determined that the method of the invention can make the hydrolysis rate of lactose in milk reach 61.2%, and the product quality fully meets the requirements of relevant standards.

Embodiment 2

[0018] Take 1000g of fresh milk and pasteurize it at 85°C for 15S. After cooling, add 0.5g of permeabilized lactase, stir at the pH value of 6.6 and the temperature of 8°C for 12 hours, and then carry out the hydrolysis at 95°C for 5 minutes. Secondary sterilization and cooling to obtain the finished product, namely low-lactose milk.

[0019] It is determined that the method of the invention can make the hydrolysis rate of lactose in milk reach 60.1%, and the product quality fully meets the requirements of relevant standards.

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PUM

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Abstract

The invention relates to a preparation method of a cow milk with a low lactose content, and belongs to the fields of dairy products and preparation method thereof. The preparation method comprises the following steps: sterilizing fresh cow milk through pasteurization, cooling, adding lactase under stirring to carry out hydrolysis, carrying out secondary sterilization after the hydrolysis, and cooling so as to obtain the finished product namely low lactose cow milk. The provided preparation method can increase the hydrolysis rate of lactose in cow milk to 60% or more, and the product is suitable for people who cannot tolerate the lactose.

Description

technical field [0001] The invention relates to a method for preparing low-lactose milk, belonging to the field of milk products and preparation methods thereof. Background technique [0002] Expert surveys found that 87% of adults in our country lack lactase in their bodies. These people will experience symptoms of lactose intolerance such as borborygmus, abdominal pain, and diarrhea to varying degrees after eating foods containing lactose. [0003] One of the main methods to solve lactose intolerance is to use exogenous lactase to pre-hydrolyze part of the lactose in milk and other foods. The traditional method of producing lactase has the disadvantages of cumbersome process, complicated operation, easy inactivation of the enzyme and high cost; however, the permeabilized cell lactase produced by modern biotechnology not only greatly reduces the production cost, but also retains the enzyme to the greatest extent. vitality. [0004] Therefore, researching a method for prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23C9/12
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM