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Process for producing soybean isoflavone by waste water of bean products factory

A technology of soybean isoflavones and soybean products, applied in the direction of organic chemistry, can solve the problems of difficult control of soybean isoflavone content, difficult control of production process, occupation of soybean resources, etc., and achieve saving of soybean resources, low production cost and simple operation Effect

Inactive Publication Date: 2005-01-05
杨爱平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. To produce soybean isoflavones with soybean meal as raw material, the production route is relatively long, especially in the extraction section where a large amount of extraction solvent is used, and the production cost is relatively high
[0006] 2. The production of soybean isoflavones from soybean meal takes up a lot of valuable soybean resources, and the content of soybean isoflavones in soybean meal is difficult to control, and the production process is difficult to control

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] Take 1000L of yellow pulp water from a tofu factory, slowly add 1mol / L sodium hydroxide solution dropwise while stirring, and adjust the pH value of yellow pulp water to 11. Heat up to 35°C, keep warm for 90 minutes and then cool to room temperature. Slowly add 1N hydrochloric acid solution dropwise while stirring, and adjust the pH value of the yellow pulp water to neutral. The yellow pulp water adjusted to neutrality is subjected to column chromatography, and rinsed with 60% edible alcohol solution. Collect eluent, evaporate under negative pressure, recover alcohol, and obtain soybean isoflavone paste. The evaporation temperature is 70°C, and the vacuum degree is 0.02MPa. Add 6 times the volume of ethyl acetate to the soybean isoflavone paste, stir for 30 minutes, and let it settle. Collect the supernatant, recover ethyl acetate under negative pressure, and obtain soybean isoflavone paste. The soybean isoflavone paste was dried for 2 hours at a vacuum degree of 0....

example 2

[0022] Take 1000L of whey produced by a soybean protein factory, slowly add 1mol / L sodium carbonate solution dropwise under stirring conditions, adjust the pH value of the whey to 9, heat up to 40°C, and keep warm for 120 minutes. Add 1N hydrochloric acid solution while stirring to adjust the pH value of the whey to neutral. The neutral yellow pulp water is subjected to column chromatography, rinsed with 75% edible alcohol solution, and the eluate is collected. Evaporate under negative pressure, recover alcohol, and obtain soybean isoflavone paste. Add 8 times the volume of acetone to the soybean isoflavone paste, stir, and let stand to settle. The supernatant was evaporated under negative pressure, and the acetone was recovered to obtain a soybean isoflavone paste, which was dried for 2 hours at a negative pressure of 0.04 MPa and a temperature of 80° C., and ground to obtain 268 grams of soybean isoflavones with a purity of 46.45%.

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Abstract

The invention relates to a method of producing soybean isoflavone by using waste water in bean products factories, extracting highly pure isoflavone by the process curse of alkali treatment, neutralization, column chromatography, alcohol recycle, solvent refining, solvent recycling, drying, etc, and it can make the obtained soybean isoflavone has a content higher than 40%. It is also applied to producing soybean insolfavone by whey in producing soybean protein and yellow seriflux in producing bean curd products.

Description

technical field [0001] The invention relates to the production of high-purity soybean isoflavones, in particular to a method for producing soybean isoflavones by using waste water from a soybean product factory. Background technique [0002] Soybean isoflavones mainly exist in various leguminous plants. Soybean is the most important dietary source of soy isoflavones. Soybean isoflavones mainly have two forms: glycoside and free. There are 12 components in total, among which daidzein, Daidzein, genistin, and genistein are the main components. [0003] Regarding the process for producing soybean isoflavones, such as the method for purifying and refining soybean isoflavones disclosed in U.S. Patent No. 5,679,806, the method uses soybean molasses or soybean powder as raw materials, and undergoes three steps of separation and refining to obtain soybean isoflavones with higher purity. Flavonoid aglycones and soybean isoflavone glycosides. Because this meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/36
Inventor 杨爱平
Owner 杨爱平
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