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Method for extracting ginkgolic acid from waste liquid generated in ginkgo leaf extract processing process

A technology for processing waste liquid and ginkgolic acid, which is applied in the field of pharmaceutical and biopesticide raw material processing, can solve the problems of cumbersome process, time-consuming gingkgolic acid, high processing cost, etc., to expand sources, reduce adhesion, and increase energy consumption. big effect

Inactive Publication Date: 2021-12-24
江苏蓝星生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient recovery of highly pure metallurgically-processed gold (Gold) flake phenols with minimal amounts of other substances like iron). By reducing these contaminants during manufacturing processes, it becomes easier to produce products that meet specifications or have better performance compared to existing methods. Additionally, this new approach reduces costs by eliminating the use of expensive chemical agents while maintaining consistently effective results over time.

Problems solved by technology

This technical problem addressed in this patented text relates to improving the efficiency and yield of producing high purity gingerbearth oil without wasting valuable resources such as phytoscylic acid. Current processes involve multiple steps involving various chemical substances like acetone, formaldehyde, cyclohexane dimercaptoheptanesulfonic acid dihydrogen ion complexes, carboxyvinegar, hydroxyproline, etc., resulting in increased costs associated with each step.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take 100kg of ginkgo leaf processing waste liquid, filter through 100-mesh, 300-mesh, and 500-mesh filter cloths respectively three times to obtain the filtrate, and then fine-filter the filtrate with a 0.15μm ceramic membrane to obtain the fine filtrate, and then use a rotary Concentrate in the evaporator at a temperature of 85°C and a vacuum of -0.09MPa to 1 / 10 of the mass of ginkgo biloba processing waste liquid to obtain 10 kg of concentrated liquid for use;

[0028](2) Take 10kg of the concentrated solution obtained in step (1), add 5kg of silica gel powder, stir at 30r / min for 4h, stop stirring, and after standing for 1h, filter out the silica gel, add 4kg of silica gel powder to the remaining filtrate, and stir at 25r / min Stir for 3.5 hours under the condition of min, stop stirring, after standing for 1 hour, filter out the silica gel, add 3kg of silica gel powder to the remaining filtrate, stir for 3 hours under the condition of 20r / min, stop stirring, after ...

Embodiment 2

[0071](1) Take 100kg of ginkgo biloba processing waste liquid, filter it three times through 100 mesh, 300 mesh, and 500 mesh filter cloths respectively to obtain the filtrate, then fine filter the filtrate with a 0.22μm ceramic membrane to obtain the fine filtrate, and then use the rotary Concentrate in the evaporator at a temperature of 90°C and a vacuum of -0.065MPa to 1 / 20 of the mass of ginkgo biloba processing waste liquid to obtain 5 kg of concentrated liquid for use;

[0072] (2) Take 5kg of the concentrated solution obtained in step (1), add 2.5kg of silica gel powder, stir at 25r / min for 4h, stop stirring, and after standing for 1h, filter out the silica gel, add 2kg of silica gel powder to the remaining filtrate, and stir at 20r / min Stir at 15r / min for 3.5h, stop stirring, let stand for 1h, filter out the silica gel, add 1.5kg of silica gel powder to the remaining filtrate, stir for 3h at 15r / min, stop stirring, let stand for 1h, put the silica gel filter out;

[0...

Embodiment 3

[0081] (1) Take 100kg of ginkgo biloba processing waste liquid, filter it through 100 mesh, 300 mesh, and 500 mesh filter cloth three times respectively to obtain the filtrate, and then fine filter the filtrate with a 0.30μm ceramic membrane to obtain the fine filtrate, and then use the rotary The evaporator is concentrated at a temperature of 88°C and a vacuum of -0.08MPa until the quality of the ginkgo leaf processing waste liquid is 1 / 16, and 6.25 kg of the concentrated liquid is obtained for use;

[0082] (2) Take 6.25kg of the concentrated solution obtained in step (1), add 3.125kg of silica gel powder, stir at 20r / min for 4h, stop stirring, and after standing for 1h, filter out the silica gel, add 2.5kg of silica gel powder to the remaining filtrate, Stir at 20r / min for 3h, stop stirring, and after standing for 1h, filter out the silica gel, add 1.875kg of silica gel powder to the remaining filtrate, stir for 3.5h at 10r / min, stop stirring, and let stand for 1h, Filter o...

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Abstract

The invention discloses a method for extracting ginkgolic acid from ginkgo leaf processing waste liquid. The method comprises the following steps: respectively filtering the ginkgo leaf processing waste liquid for three times by using filter cloth, then, carrying out refined filtering and concentrating to 1/10-1/20 of the mass to obtain a concentrated solution, then, mixing the concentrated solution with silica gel according to a weight ratio of 1: (0.3-0.5), carrying out stirring for three times, merging the silica gel filtered for three times, washing the silica gel with deionized water until the silica gel is colorless, respectively extracting the silica gel with ethanol, methanol and petroleum ether once, respectively recovering the solvent to obtain extracts, and carrying out drying, crushing and uniform mixing to obtain a ginkgolic acid extract, and detecting by an HPLC (High Performance Liquid Chromatography) method that the content of the ginkgolic acid is greater than 60%. The ginkgolic acid obtained by the method can be used as a biopesticide preparation, an external pharmaceutical preparation and a cosmetic product. According to the method, a large volume of ginkgo leaf processing waste liquid can be beneficially utilized, and the method has a great practical value for expanding the source of ginkgolic acid raw materials.

Description

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Claims

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Application Information

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Owner 江苏蓝星生物工程有限公司
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