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Extracting method for lactone in gingkoes

An extraction method and technology of ginkgo, applied in the extraction of active components of ginkgo ginkgo, the extraction of lactones in ginkgo ginkgo, can solve the problems of low yield, low purity, complicated operation and the like, and achieve high product yield, high purity, good extraction effect

Inactive Publication Date: 2015-12-23
杨金伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods all have the problems of complicated operation, low yield and low purity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1: Take 30Kg of ginkgo fruit, dry it at 100°C for 3 hours, grind it into powder, add it to 150Kg of sodium sulfate solution with a mass concentration of 0.5%, stir evenly, heat it to 50°C, keep it warm for 2 hours, let it cool, obtain the extract;

[0022] Step 2: Add 30Kg of isopropanol to the extract, mix evenly, remove impurities through the macroporous adsorption resin, and collect the permeate;

[0023] Step 3, the sodium hydroxide solution with a mass concentration of 1% adjusts the pH of the permeate to 8.0, and then filters with an ultrafiltration membrane to obtain an ultrafiltration permeate;

[0024] Step 4, adding ethyl acetate 50Kg to the ultrafiltration permeate for extraction to obtain an organic phase;

[0025] The fifth step is to heat and concentrate the organic phase, and when the volume of the feed liquid is reduced to 30% of the original volume, cool and crystallize, filter out the crystals, and dry them.

[0026] The macroporous adsorbent re...

Embodiment 2

[0029] Step 1: Take 40Kg of ginkgo fruit, dry it at 120°C for 6 hours, grind it into powder, add it to 200Kg of sodium sulfate solution with a mass concentration of 1%, stir evenly, heat it to 60°C, keep it warm for 4 hours, let it cool, obtain the extract;

[0030] Step 2, add 40Kg of isopropanol to the extract, mix evenly, remove impurities through the macroporous adsorption resin, and collect the permeate;

[0031] Step 3, the sodium hydroxide solution with a mass concentration of 1% adjusts the pH of the permeate to 10.0, and then filters with an ultrafiltration membrane to obtain an ultrafiltration permeate;

[0032] Step 4, adding ethyl acetate 60Kg to the ultrafiltration permeate for extraction to obtain an organic phase;

[0033] The fifth step is to heat and concentrate the organic phase, and when the volume of the feed liquid is reduced to 50% of the original volume, cool and crystallize, filter out the crystals, and dry them.

[0034] The macroporous adsorbent res...

Embodiment 3

[0037] Step 1: Take 35Kg ginkgo fruit, dry it at 110°C for 5 hours, grind it into powder, add it to 170Kg of sodium sulfate solution with a mass concentration of 0.7%, stir evenly, heat to 55°C, keep it warm for 3 hours, let it cool, obtain the extract;

[0038] Step 2: Add 35Kg of isopropanol to the extract, mix evenly, remove impurities through the macroporous adsorption resin, and collect the permeate;

[0039] Step 3, the sodium hydroxide solution with a mass concentration of 1% adjusts the pH of the permeate to 9.0, and then filters with an ultrafiltration membrane to obtain an ultrafiltration permeate;

[0040] Step 4, adding ethyl acetate 55Kg to the ultrafiltration permeate for extraction to obtain an organic phase;

[0041] The fifth step is to heat and concentrate the organic phase, and when the volume of the feed liquid is reduced to 40% of the original volume, cool and crystallize, filter out the crystals, and dry them.

[0042] The macroporous adsorbent resin in...

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PUM

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Abstract

The invention discloses an extracting method for lactone in gingkoes. The invention is mainly prepared from, by weight, 70-78 parts of portland cement, 30-38 parts of AEC expansive cement, 20-30 parts of white cement, 30-35 parts of methyl hexenoic acid methyl ester, 10-18 parts of vinyl acetate resin emulsion, 12-14 parts of potassium hydroxide, 4-8 parts of starch, 3-6 parts of ammonium dichromate, 10-18 parts of light calcium carbonate, 10-15 parts of polypropylene short fiber, 8-10 parts of carboxymethylcellulose, 10-16 parts of fly ash glass beads, 5-9 parts of kaolin, 5-9 parts of vermiculite and 5-7 parts of ammonium polyphosphate. The invention is long in fireproof time limit, good in adhesion property, convenient to construct and suitable for various tunnel walls and simultaneously has the sound absorption function on the basis of fire protection.

Description

technical field [0001] The invention relates to a method for extracting active components of ginkgo ginkgo, in particular to a method for extracting lactones in ginkgo ginkgo, belonging to the technical field of natural product extraction. Background technique [0002] Ginkgo is also called Ginkgo biloba and Gongsun Shuzi. It is as big as an apricot stone and white as jade in color. It tastes sweet, bitter and astringent, and overeating can easily cause diarrhea. Ginkgo nuts contain a variety of nutritional elements. In addition to starch, protein, fat, and sugar, they also contain vitamin C, riboflavin, carotene, calcium, phosphorus, iron, potassium, magnesium and other trace elements, as well as ginkgolic acid, Ginkgool, five-carbon polysaccharide, liposterol and other ingredients. It has dietary and medical effects such as benefiting lung qi, curing cough and asthma, stopping worms, shrinking stools, flattening wrinkles, protecting blood vessels, and increasing blood fl...

Claims

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Application Information

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IPC IPC(8): C07D493/20
CPCC07D493/20
Inventor 杨金伟
Owner 杨金伟
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