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A kind of preparation method of soybean element pure product

A technology of soybean oil and pure product, which is applied in the field of preparation of soybean oil pure product, can solve the problems of many impurities, complex process, high production cost, etc.

Active Publication Date: 2021-05-11
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively complicated, and there are many impurities in the product, which need to be further purified, resulting in high production costs
There are also countercurrent distribution chromatography, column chromatography, high performance liquid chromatography, etc. to prepare pure daidin as a standard, but it mainly depends on the instrument, and the sample processing is cumbersome, and the sample preparation is less

Method used

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  • A kind of preparation method of soybean element pure product
  • A kind of preparation method of soybean element pure product
  • A kind of preparation method of soybean element pure product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 2L of soymilk water discharged from the production of soybean protein by alkali extraction and acid precipitation process, naturally settle in the separatory funnel for 6 hours, and release the yellow 500mL liquid below, and add 25g Na 2 CO 3 , Magnetic stirring and dissolving reaction for 1h, put into a separatory funnel and divide into upper and lower layers after standing still. Release the liquid in the lower layer, keep the liquid in the upper layer (250mL) in the separatory funnel, add 250mL of ethyl acetate, shake well and extract for 1h, let stand to separate into two layers. The liquid in the lower layer was released to obtain 200 mL of the upper ethyl acetate layer. Remove ethyl acetate by rotary evaporation to 40ml, add 0.4g bone phosphate to the concentrated solution, vortex for 10min, take the upper ethyl acetate layer after static precipitation, remove ethyl acetate by rotary evaporation to dryness, and then add to the dry residue Add 5 mL of ethyl ...

Embodiment 2

[0039] Take 2L of soymilk water discharged during the production of soybean protein by alkali extraction and acid precipitation process, let it stand for 4 hours to settle naturally, and obtain 500mL of yellow liquid in the lower layer. To this liquid was added 20g Na 2 CO 3 , magnetically stirred for 0.5h to make Na 2 CO 3 Dissolve and react, put into the separatory funnel and let stand to divide into two layers, let out the lower layer of liquid, leave the upper layer of liquid 240mL in the separatory funnel, add 240mL of ethyl acetate, shake well and extract for 0.5h, stand still to separate into two layers, let out the lower layer of liquid , take the upper ethyl acetate layer (180mL) and remove ethyl acetate by rotary evaporation to 35ml, add 0.5g bone phosphate to the concentrated solution, vortex for 10min, after static precipitation, take the upper ethyl acetate layer, and remove acetic acid by rotary evaporation After the ethyl ester is dry, add 5 mL of ethyl aceta...

Embodiment 3

[0041]Take 2L of soymilk water discharged from the production of soybean protein by alkali extraction and acid precipitation process, settle naturally in the separatory funnel for about 5 hours, release the yellow liquid below 500mL, add 30g Na 2 CO 3 , magnetic stirring 1.5 to dissolve and react. Put into a separatory funnel and separate into two layers. Release the lower layer liquid, leave about 260mL of the upper layer liquid in the separatory funnel, add 260mL of ethyl acetate, shake well and extract for 45min, let stand to separate into two layers, and release the lower layer liquid. Take about 210mL of the upper ethyl acetate layer, remove part of the ethyl acetate to 35ml by rotary evaporation, add 0.5g bone phosphate to the concentrated solution, vortex for 10min, after static precipitation, take the upper ethyl acetate layer, and remove the acetic acid by rotary evaporation After the ethyl ester is dry, add 5 mL of ethyl acetate to the dry residue, vortex to promot...

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Abstract

The invention discloses a preparation method of pure daidin, which comprises the following steps: after the soybean milk is settled, the yellow liquid at the lower part of the liquid is taken; adding Na 2 CO 3 , after dissolving, static layering, taking the upper layer liquid; adding ethyl acetate to the upper layer liquid, shaking and extracting, taking the ethyl acetate layer, removing impurities and evaporating to dryness to obtain daidzein. Compared with the method of preparing daidin by using soybean milk as raw material, the method for preparing daidin has simple process, less drug dosage, cheap and easy-to-obtain drug, and low preparation cost.

Description

technical field [0001] The invention specifically relates to a preparation method of pure daidzein. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Soybean isoflavones are a class of secondary metabolites formed during the growth of soybeans, mainly including 6 substances such as daidzein, daidzein, genistein, genistin, glycitein and daidzein, which are mainly distributed in soybean seeds. cotyledon and hypocotyl. Among them, the chemical name of daidzin is 4,7-dihydroxyisoflavone, and the molecular formula is C 15 h 10 o 4 . [0004] Daidzein has antioxidant properties in animals. For example, feeding old laying hens with feed containing daidzein can increase the ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/36C07D311/40
CPCC07D311/36C07D311/40
Inventor 刘代成尹成文
Owner SHANDONG NORMAL UNIV