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Novel method for simultaneously extracting gastrodia elata polysaccharide and gastrodine

A technology of Gastrodia elata polysaccharides and gastrodin, applied in chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of fresh Gastrodia elata that cannot be stored for a long time, industrialization restrictions, material waste, etc., and achieve low cost and simplified production Good workmanship and economic benefits

Inactive Publication Date: 2013-08-14
SHAANXI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has solved the problem of material waste caused by the single extraction of Gastrodia elata active ingredient
But the process is cumbersome, and the fresh Gastrodia elata cannot be stored for a long time, so the industrialization of this method is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Example 1: Take 20g of dry Gastrodia elata powder, add water at 1:38, extract at 98-100°C for 146min, cool to room temperature, filter with suction, repeat the extraction once more, combine the filtrates twice, concentrate under reduced pressure for 10 times, and cool to At room temperature, under stirring or ultrasonic conditions, add 95% ethanol to make the final alcohol concentration to 80%, let stand for more than 12 hours, and filter with suction. The precipitate was washed twice with 95% ethanol, drained, dried at 75°C, 0.06-0.08kPa, and pulverized to obtain Gastrodia elata polysaccharide, with a yield of 59% and a content of Gastrodia elata polysaccharide of 90%. The filtrate was concentrated 15 times under reduced pressure, transferred to a vacuum drying oven, and dried at 75° C. and 0.06-0.08 kPa to obtain gastrodin extract with a yield of 35.6%, and the gastrodin content in the extract was 2.6%.

example 2

[0020] Example 2: Take 20g of dry Gastrodia elata powder, add water at 1:40, extract at 98-100°C for 120min, cool to room temperature, filter with suction, repeat the extraction twice, combine the filtrates for three times, concentrate under reduced pressure for 10 times, and cool to At room temperature, under stirring or ultrasonic conditions, add 95% ethanol to make the final alcohol concentration to 80%, let stand for more than 12 hours, and filter with suction. The precipitate was washed twice with 95% ethanol, drained, dried at 75°C, 0.06-0.08kPa, and pulverized to obtain Gastrodia elata polysaccharide, with a yield of 55% and a content of 92% of Gastrodia elata polysaccharide. The filtrate was concentrated 15 times under reduced pressure, transferred to a vacuum drying oven, and dried at 75°C and 0.06-0.08kPa to obtain gastrodin extract with a yield of 33.1%, and the gastrodin content in the extract was 2.8%.

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PUM

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Abstract

The invention provides a novel method for simultaneously extracting gastrodia elata polysaccharide and gastrodine, relating to the technical field of processing of subsidiary agricultural products. The method is characterized by comprising the following steps: pulverizing dry gastrodia elata, carrying out water extraction and alcohol precipitation, washing the precipitate with alcohol, drying under reduced pressure, pulverizing to obtain gastrodia elata polysaccharide, and concentrating the alcohol filtrate under reduced pressure to obtain gastrodine extractum. The invention has the characteristics of simple technique, high utilization ratio of raw materials, low solvent consumption, low cost, high extraction rate, good economic benefits, no environmental pollution and the like, and the production is free from the influence of the gastrodia elata production seasons.

Description

1. Technical field [0001] Technical field of agricultural by-product processing, specifically, the present invention is a method for simultaneously extracting gastrodia elata polysaccharide and gastrodin from dried gastrodia elata. 2. Background technology [0002] Gastrodia elata is a precious Chinese herbal medicine, which contains a variety of active ingredients. At present, the research on the extraction of active ingredients of Gastrodia elata and the research and development of products mainly focus on gastrodin and gastrodia elata polysaccharide. [0003] According to reports, the extraction of active components of Gastrodia elata is mainly based on single-component extraction, and the extraction methods of gastrodin include solvent extraction such as water extraction, alcohol extraction, and chloroform extraction. In the solvent extraction process, methods such as reflux extraction, Soxhlet extraction, ultrasonic extraction, microwave-assisted extraction, enzyme-assi...

Claims

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Application Information

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IPC IPC(8): C08B37/00C07H15/203C07H1/08
Inventor 周建军周辉刘益红张志健
Owner SHAANXI UNIV OF TECH
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