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A kind of method for preparing glycidin with first-grade scum of treating soybean milk water

A technology of glycidin and scum, applied in the preparation of sugar derivatives, chemical instruments and methods, organic chemistry, etc., can solve problems such as increasing the burden on enterprises

Active Publication Date: 2020-09-29
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A production plant that produces 100,000 tons of soybean protein spends more than 40 million yuan on the treatment of soybean milk water every year, which greatly increases the burden on enterprises.

Method used

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  • A kind of method for preparing glycidin with first-grade scum of treating soybean milk water
  • A kind of method for preparing glycidin with first-grade scum of treating soybean milk water
  • A kind of method for preparing glycidin with first-grade scum of treating soybean milk water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Soymilk water is flocculated with polyaluminum chloride and polyacrylamide, aerated, caught first-level scum, dried and dried (2 CO 3 To the solution, add 450 mL of ethanol to make the concentration of the ethanol solution 60%, stir and extract in a water bath at 50°C for 0.5 h, and filter to obtain 336 mL of filtrate. Adjust pH=6 with 5% HCl (precipitation occurs) about 400 mL.

[0032] 2) Add 550 mL of 60% ethanol solution to the filtered residue, stir and extract for 1.5 h at 50°C, adjust the pH of the filtrate to 6 (precipitation occurs) about 358 mL.

[0033] 3) Repeat the extraction process of 2), adjust the pH of the filtrate to about 350 mL, and combine the liquids treated in 1), 2), and 3), and rotary evaporate to dryness to obtain 7 g of dry residue.

[0034] 4) Add 10 times the volume of ethyl acetate to the dry residue, shake and extract for 10 minutes, centrifuge at 1000 r / min for 5 minutes, take the supernatant ethyl acetate solution, dry it by rotary evaporat...

Embodiment 2

[0036] 1) Soymilk water is flocculated with polyaluminum chloride and polyacrylamide, aerated, caught first-level scum, dried and dried (2 CO 3 To the solution, add 450 mL of ethanol to make the concentration of the ethanol solution 60%. Stir and extract with water at 60°C for 1.5 hours, and filter to obtain 340 mL of filtrate. Adjust pH to 6.2 with 7% HCl (precipitation occurs) about 400 mL.

[0037] 2) Add 500 mL of 60% ethanol solution to the filtered residue, stir and extract at 50° C. for 0.5 h, adjust the pH of the filtrate to 6.2 (precipitation occurs) about 358 mL.

[0038] 3) Repeat the extraction process of 2), adjust the filtrate to pH=6.2 about 350 mL, combine the liquids treated in 1), 2), and 3), and rotatory-evaporate to dryness to obtain 6 g of dry residue.

[0039] 4) Add 10 times the volume of ethyl acetate to the dry residue, shake and extract for 30 minutes, centrifuge at 1000 r / min for 5 minutes, take the supernatant ethyl acetate solution, dry it by rotary evapo...

Embodiment 3

[0041] 1) Soymilk water is flocculated with polyaluminum chloride and polyacrylamide, aerated, caught first-level scum, dried and dried (2 CO 3 To the solution, add 450 mL of ethanol to make the concentration of the ethanol solution 60%, stir and extract in a 70°C water bath for 1 hour, and filter to obtain 350 mL of filtrate. Adjust pH to 5.8 with 10% HCl (precipitation occurs) about 400 mL.

[0042] 2) Add 600 mL of 60% ethanol solution to the filtered residue, stir and extract at 50°C for 1 hour, adjust the pH of the filtrate to 5.8 (precipitation occurs) about 358 mL.

[0043] 3) Repeat the extraction process of 2), adjust the pH of the filtrate to 5.8 about 350 mL, combine the liquids treated with 1), 2), and 3), and rotate to evaporate to dryness to obtain 8 g of dry residue.

[0044] 4) Add 10 times the volume of ethyl acetate to the dry residue, shake and extract for 20 minutes, centrifuge at 1000 r / min for 5 minutes, take the supernatant ethyl acetate solution, and dry it by...

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Abstract

The invention discloses a method for preparing glycitein by treating primary scum of soybean milk. The method comprises the following steps of adding a Na2CO3 solution and ethanol into primary scum dry powder obtained by treating the soybean milk with polyaluminum chloride and polyacrylamide, performing stirring and extracting for set time, and conducting filtering to obtain a filtrate; evaporating the filtrate till the filtrate is dried, extracting and purifying the filtrate with ethyl acetate, and then evaporating the filtrate till the filtrate is totally dried to obtain glycitein. If a certain concentration of a mixed liquid of the Na2CO3 aqueous solution and ethanol is used for extracting the primary scum obtained by treating the soybean milk, glycitein in the primary scum can be selectively extracted, wherein the prepared glycitein has higher purity and does not contain other soybean isoflavones.

Description

Technical field [0001] The invention specifically relates to a method for preparing soyflavin by treating the first-grade scum of soy milk water. Background technique [0002] Disclosure of the background information is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an acknowledgement or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art. [0003] Daidzein has the effects of inducing programmed cell death, improving anti-cancer efficacy and inhibiting angiogenesis. It is a potential cancer chemopreventive agent. Its Chinese alias is 4',7-dihydroxy-6-methoxy Base isoflavones, a kind of soy isoflavones. Its main sources are the legumes red clover whole plant, alfalfa whole plant, soybean seed, Nepal yellow flower tree stem, pterodactyl wood, pueraria lobata flower, broad bean root, Honduran Dalbergia bark and heartwood. Due to the simila...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H17/07C07H1/06
CPCC07H1/06C07H17/07
Inventor 刘代成尹成文
Owner SHANDONG NORMAL UNIV
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