A kind of soybean protein isolate multi-stage extraction method and system

A soybean protein isolate and extraction technology, applied in the field of soybean protein isolate multi-stage extraction methods and systems, can solve the problems of low solubility, heavy protein smell and the like

Active Publication Date: 2021-02-02
BY HEALTH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention discloses a soybean protein isolate multi-stage extraction method and system, which can effectively solve the technical defects of heavy fishy smell and low solubility of the current soybean protein isolate

Method used

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  • A kind of soybean protein isolate multi-stage extraction method and system
  • A kind of soybean protein isolate multi-stage extraction method and system
  • A kind of soybean protein isolate multi-stage extraction method and system

Examples

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preparation example Construction

[0046] Specifically, the preparation method of soybean meal includes: using non-transgenic soybeans or / and genetically modified soybeans as raw materials, obtaining soybeans through purification, softening, crushing, peeling, heat treatment, embryo pressing, extraction, low-temperature vacuum precipitation and drying, Among them, the protein content of soybean meal is 54.5-55.5%, and the NSI (nitrogen solubility index) is 85.5-86.5.

[0047] Specifically, the polysaccharide specifically includes: one or more of soybean polysaccharide, lactose and starch sugar, and the polysaccharide accounts for 0.3-0.5% of the mass percentage of the neutral protein milk.

[0048] Preferably, the polysaccharide is soybean polysaccharide, and soybean polysaccharide accounts for 0.5% of the mass percentage of neutral protein milk.

[0049] Specifically, the heating temperature in step 3 is 105° C. to 120° C., and the heating time is 3 to 5 minutes.

[0050] Among them, the heat-treated A soybea...

Embodiment 1

[0058] The present embodiment provides the soybean protein isolate multistage extraction method, specifically comprises the following steps:

[0059] 1. Use soybean low-temperature soybean meal as raw material, wherein the protein content of soybean meal is 55.5%, and NSI is 85.8. Measure and control the amount of low-temperature soybean meal to 3 tons / hour, adjust the water temperature of the process water to 49±1°C, perform primary extraction according to the water-material ratio of 5:1, add water 15 tons / hour, and the pH value at this time is 7.02 after testing , control the material level of the tank, and use a centrifuge to separate the solid and liquid after leaching time (including the tube bundle time) for 25 minutes to obtain a soaked soybean emulsion and a soaked soybean dregs.

[0060] 2. The bean dregs from the first soaking process are directly put into the second soaking tank, and the temperature of the process water is adjusted to 49±1°C, and the secondary extra...

Embodiment 2

[0069] This embodiment provides a soybean protein isolate multistage extraction method, which is basically the same as in Example 1, specifically as follows

[0070] 1. Use soybean low-temperature soybean meal as raw material, in which the protein content of soybean meal is 55.3%, NSI is 86.5, set and control the amount of low-temperature soybean meal to 3 tons / hour, adjust the water temperature of the process water to 49±1°C, according to the water material of 4.5:1 Compared with carrying out primary extraction, add water 13.5 tons / hour, the pH value at this moment is detected as 7.22, the material level of control tank, leaching time (including tube bundle time) utilizes centrifuge solid-liquid separation after 25 minutes, obtains a leaching Soy milk and a dip in okara.

[0071] 2. The bean dregs from the first soaking process are directly put into the second soaking tank, the water temperature of the process water is adjusted to 49±1°C, and the secondary extraction is carri...

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Abstract

The invention belongs to the technical field of soybean processing and especially relates to a multistage extraction method and system of soybean protein isolate. The multistage extraction method of soybean protein isolate provided by the invention adopts separate treatment of a non-chemically extracted bean emulsion and a chemically extracted bean emulsion by a differential acid precipitation technique, wherein a non-chemically extracted bean emulsion A is subjected to treatment by a thermal treatment technique and a flashing technique and then subjected to acid precipitation; a chemically extracted bean emulsion B is directly subjected to acid precipitation and then subjected to treatment by a neutralizing technique, a polysaccharide grafting technique and a flashing deodorizing technique to obtain a colloidal emulsion with low beany flavor and high solubility; and then the colloidal emulsion is subjected to drying treatment to obtain the soybean protein isolate with low beany flavorand high solubility. The multistage extraction method and system can effectively solve the technical defects of high beany flavor and low solubility of existing soybean protein isolate.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a soybean protein isolate multistage extraction method and system. Background technique [0002] In recent years, more and more people in the world have become more and more aware of the nutritional value of soybean protein isolate, so the market demand potential is also expanding. In addition to the traditional meat industry, it has also been used in health care products and vegetarian products. , due to the existence of the beany smell of the product, soy protein isolate products are subject to some restrictions in the application process of the above-mentioned fields. [0003] Soy protein isolate is produced from low-temperature defatted soybean meal. Most of the processes used are alkali extraction and acid precipitation processes to remove most of the insoluble and soluble carbohydrates. Due to the lack of some processing of protein components, it usual...

Claims

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Application Information

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IPC IPC(8): B01D11/00A23J1/14A23J3/16
CPCA23J1/14A23J3/16
Inventor 何健张旭光殷光玲宋恒祥刘兵王家冰
Owner BY HEALTH CO LTD
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