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Method for extracting purgation alcohol acid from plant wastes

A technology of plant waste and purgative alkyd, applied in the direction of steroids, organic chemistry, etc., to achieve the effect of easy realization, simple operation and simplified extraction process

Active Publication Date: 2020-12-11
THE KEY LAB OF CHEM FOR NATURAL PROD OF GUIZHOU PROVINCE & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the technical defects of the existing extraction methods, the present invention provides a method for extracting Bryonia alkyd from plant waste, and a method of controlling the pH and purification through ethanol reflux extraction and ethyl acetate extraction to prepare high-purity Bryonia alkyd

Method used

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  • Method for extracting purgation alcohol acid from plant wastes
  • Method for extracting purgation alcohol acid from plant wastes
  • Method for extracting purgation alcohol acid from plant wastes

Examples

Experimental program
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Effect test

Embodiment 1

[0041]Take 4 kg of the stem of Cucurbitaceae Momordica grosvenori, add 3 times its mass of 90% ethanol, reflux extraction 3 times, 2 hours each time, filter, take the filtrate, recover the ethanol under reduced pressure until it has no alcohol smell, and obtain the total extract; add water to suspend , add ethyl acetate to extract 3 times, collect the ethyl acetate layer, recover the solvent under reduced pressure until there is a small amount of solvent, let it stand for 0.5h, and filter; add ethanol to the precipitated part, stir for 2h, filter, and vacuum dry to obtain the crude psyrrhizin alkyd White powder (9.5g). Its purity was 90% as detected by HPLC. Add water to the crude product Bryonia alkyd, and the mass ratio of the two is 1:5. If the Bryogen alkyd cannot be completely dissolved, add an excessive amount of inorganic carbonate or bicarbonate, and the amount of inorganic carbonate or bicarbonate added is 15-20% of the mass of the root alkyd, heated to reflux, and a...

Embodiment 2

[0044] Take 4 kg of cucurbitaceous plant Luo Han Guo stems, add 95% ethanol in an amount twice its mass, reflux extraction 4 times, each time for 1.5 hours, filter, take the filtrate, recover the ethanol under reduced pressure until it has no alcohol smell, and obtain the total extract, add water and mix Suspended, added ethyl acetate to extract 3 times, collected ethyl acetate layer, recovered the solvent under reduced pressure until there was a small amount of solvent, left it for 0.5h, filtered, added ethanol to the precipitated part, stirred for 1.5h, filtered, and vacuum-dried to obtain crude bryonia Alkyd white powder (9.2 g), its purity was 85% by HPLC. Add water to crude bryrrhizal alkyd, the quality of water added is 2-5 times that of bryonia alkyd, bryrrhizin alkyd cannot be completely dissolved, add excess KHCO 3 , KHCO 3 The dosing quality is 15-20% of the basaltic alkyd (depending on the purity of the basaltic alkyd), heated to reflux, and after the basaltic alky...

Embodiment 3

[0046] Take 4 kg of the stem of Cucurbitaceae Momordica grosvenori, add 75% ethanol in an amount 5 times its mass, reflux extraction 3 times, each time for 2.5 hours, filter, take the filtrate, recover the ethanol under reduced pressure until there is no alcohol smell, and obtain the total extract, add water Suspend, extract 4 times with ethyl acetate, collect the ethyl acetate layer, recover the solvent under reduced pressure to a minimum, let it stand for 0.5h, filter, add ethanol to the precipitated part, stir for 2.5h, filter and dry in vacuum to obtain the white color of purgeia alkyd The powder (9.6g) has a purity of 82% as determined by HPLC. Add water to the crude product bryonia alkyd, the quality of water added is 2-5 times that of the crude product bryonia alkyd, bryson root alkyd cannot be completely dissolved, add excess Na 2 CO 3 and K 2 CO 3 Mixture, the quality of the mixture is 15-20% (depending on the purity of bryonia alkyd) of bryonia alkyd, heated to re...

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Abstract

The invention discloses a method for extracting senecio alcohol acid from plant wastes, which comprises the following steps: carrying out reflux extraction on waste stems of siraitia grosvenorii plants by using ethanol of which the addition amount is greater than the mass of the waste stems of the siraitia grosvenorii plants, filtering the extracting solution, and recovering the ethanol under reduced pressure; suspending the ethanol-recovered extract with water, adding ethyl acetate for extraction, collecting an ethyl acetate layer, recovering ethyl acetate under reduced pressure, and performing standing and filtering; adding ethanol into the precipitation part, carrying out pulping, stirring and filtering, and carrying out vacuum drying to obtain crude purslane alkyd; adding water into crude purslane alkyd to enable the purslane alkyd to be only partially dissolved, adding excessive inorganic carbonate or bicarbonate, carrying out heating reflux, carrying out hot filtration after thepurslane alkyd is not dissolved any more, and cooling the filtrate; and adjusting the pH value of the cooled filtrate to 3-6 by using 1mol / L hydrochloric acid, slowly performing cooling, and performing filtering to obtain the purified purgation alkyd. By adopting the method disclosed by the invention, the purgation alcohol acid with the purity of 99% or above can be prepared from the waste stems of the momordica grosvenori plants.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of natural products, and relates to a method for extracting basalt alkyd, in particular to a method for extracting high-purity basalt alkyd from the discarded stem of the Luo Han Guo plant. Background technique [0002] Bryonia alkyd, another name, Baiyonic acid. English name: Bryonolic acid. Molecular formula: C 30 h 48 o 3 . Molecular weight: 456.3603. CAS: 24480-45-3. [0003] The structural formula is as follows: [0004] [0005] Bryonia alkyd acid is an acidic isoarcinane-type triterpenoid compound extracted from the roots and stems of Cucurbitaceae melons. Luo Han Guo (Siraitia grosvenorii (Swingle) C.Jeffrey ex A.M.Lu etZ.Y.Zhang) is a vine plant of Cucurbitaceae. It is a traditional Chinese medicine in my country. Ideal sweetener, sweet substitute for diabetic and obese patients. So far, the research and development of Luo Han Guo are still mostly focused on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J63/00
CPCC07J63/008
Inventor 张妮潘卫东娄华勇张俊连李金玉周美罗小廷张羽银
Owner THE KEY LAB OF CHEM FOR NATURAL PROD OF GUIZHOU PROVINCE & CHINESE ACADEMY OF SCI
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