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Preparation method of freeze-dried milk powder containing four high-immunocompetence proteins

A technology of active protein and high immunity, applied in the field of dairy products, to achieve the effect of simple equipment, wide application prospects and low total number of colonies

Pending Publication Date: 2022-07-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few researches and applications on ultraviolet radiation in the production and processing of dairy products, especially in milk powder.

Method used

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  • Preparation method of freeze-dried milk powder containing four high-immunocompetence proteins
  • Preparation method of freeze-dried milk powder containing four high-immunocompetence proteins
  • Preparation method of freeze-dried milk powder containing four high-immunocompetence proteins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Place the fresh goat milk in a clean and high-pressure steam sterilized plate, control the thickness of 1-2cm, seal with plastic wrap, place it in the refrigerator at -80°C for 8-10h until it is frozen, and then take it out and place it in a freeze dryer Freeze-dry for 48h at a temperature of -40°C and a vacuum of 9.5Pa. After drying, take out the milled powder, lay it flat under an ultraviolet lamp (UV-C), control the thickness to be 5-10cm, sterilize it by radiation for 15min, and then vacuum-pack it. Obtain goat milk powder products.

Embodiment 2

[0022] Place the fresh goat milk in a clean and high-pressure steam sterilized plate, control the thickness of 1-2cm, seal with plastic wrap, place it in the refrigerator at -80°C for 8-10h until it is frozen, and then take it out and place it in a freeze dryer Freeze-dry for 48h at a temperature of -40°C and a vacuum of 9.5Pa, take out the milled powder after drying, lay it flat under an ultraviolet lamp (UV-C), control the thickness to be 5-10cm, sterilize it by radiation for 25min, and then vacuum package, Obtain goat milk powder products.

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Abstract

The invention discloses a preparation method of freeze-dried milk powder containing four high-immunocompetence proteins, which comprises the following steps: preparing milk powder by using a freeze-drying technology, and sterilizing the milk powder by using an ultraviolet radiation sterilization technology to obtain a high-immunocompetence protein milk powder product. Microbiological indicators of the milk powder product prepared by the preparation method disclosed by the invention meet national standards, and the milk powder product also shows high immunocompetence protein content (IgA (Immunoglobulin A) of 0.324 to 0.329 g / 100g, IgM (Immunoglobulin M) of 2.389 to 2.400 g / 100g, IgG (Immunoglobulin G) of 0.0053 to 0.0061 g / 100g and LTF (Low Temperature Function) of 0.303 to 0.316 g / 100g), low moisture content (2.892 to 4.771 percent) and low moisture activity (0.053 to 0.314), and is good in storage characteristic. Freeze drying and ultraviolet radiation sterilization processes are combined for use for the first time, the milk powder production process is improved, the quality of the milk powder can be improved, development of high-quality milk powder is facilitated, high practicability is achieved, and the method has important significance on industrial development of milk and dairy products.

Description

technical field [0001] The invention belongs to the technical field of dairy products, and in particular relates to a preparation method of freeze-dried milk powder containing four kinds of high-immunity active proteins. Background technique [0002] Milk is an important source of nutrition for human beings. The general production process of milk powder is raw material acceptance, pretreatment and standardization, sterilization, concentration, and spray drying. In addition to protein, fat, lactose, minerals and other basic nutritional components, milk also contains immunoglobulin (IgG, IgA, IgM), lactoferrin (LTF), lactoperoxidase, xanthine oxidase, etc. Biologically active substances, these biologically active proteins and enzymes are often heat-sensitive, and the heat treatment (concentration, sterilization, spray drying, etc.) involved in traditional dairy processing can lead to inactivation of these active substances. Freeze-drying is carried out under low temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23C1/08A23C3/07
CPCA23C1/08A23C3/076
Inventor 刘永峰鱼喆喆
Owner SHAANXI NORMAL UNIV