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Extraction method of imperatoria polysaccharide

An extraction method and technology of king grass, applied in the field of extraction of chemical components of king grass, can solve the problems of no relevant reports and literature records, and achieve the effects of accurate extraction, simplified procedure and good repeatability

Inactive Publication Date: 2014-03-05
TROPICAL CORP STRAIN RESOURCE INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, as far as we know and search, there are no relevant reports and literature records about the extraction of plant polysaccharides from King Grass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for extracting Wangcao polysaccharide, the method comprising the following steps:

[0019] (1) The raw material of king grass is fresh stems and leaves of king grass, cut into small pieces of about 3cm, baked in an oven at 65°C for 48 hours and dried to constant weight, then crushed into powder with a grinder, passed through a 40-mesh sieve for later use;

[0020] (2) Add 15 times the weight of distilled water to the king grass powder, pour it into a round-bottomed flask container, put it into a constant temperature water bath and vibrate at a constant speed, the extraction temperature is 80°C, and the extraction time is 30 minutes. Repeat the above extraction process twice, After the extraction is completed, wait for the solution to cool down, filter with double-layer medium-speed qualitative filter paper, rinse the filter residue with distilled water, combine the filtrate and constant volume, and wait for the test;

[0021] (3) Using the glucose standard solu...

Embodiment 2

[0024] A method for extracting Wangcao polysaccharide, the method comprising the following steps:

[0025] (1) The raw material of king grass is fresh stems and leaves of king grass, cut into small pieces of about 3cm, baked in an oven at 65°C for 48 hours and dried to constant weight, then crushed into powder with a grinder, passed through a 40-mesh sieve for later use;

[0026] (2) Add 20 times the weight of distilled water to the king grass powder, pour it into a round bottom flask container, put it into a constant temperature water bath and shake it at a constant speed, the extraction temperature is 70°C, the extraction time is 20 minutes, repeat the above extraction process once, After the extraction is completed, wait for the solution to cool down, filter with double-layer medium-speed qualitative filter paper, rinse the filter residue with distilled water, combine the filtrate and constant volume, and wait for the test;

[0027] (3) Using the glucose standard solution a...

Embodiment 3

[0030] A method for extracting Wangcao polysaccharide, the method comprising the following steps:

[0031] (1) The raw material of king grass is fresh stems and leaves of king grass, cut into small pieces of about 3cm, baked in an oven at 65°C for 48 hours and dried to constant weight, then crushed into powder with a grinder, passed through a 40-mesh sieve for later use;

[0032] (2) Add 25 times the weight of distilled water to the king grass powder, pour it into a round bottom flask container, put it into a constant temperature water bath and vibrate at a constant speed, the extraction temperature is 90°C, the extraction time is 40 minutes, repeat the above extraction process 3 times, After the extraction is completed, wait for the solution to cool down, filter with double-layer medium-speed qualitative filter paper, rinse the filter residue with distilled water, combine the filtrate and constant volume, and wait for the test;

[0033] (3) Using the glucose standard solution...

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PUM

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Abstract

The invention discloses an extraction method of imperatoria polysaccharide. The extraction method comprises the following steps: drying and crushing imperatoria; adding distilled water and imperatoria powder according to a certain liquid-material ratio into a water bath for extraction and filtration; metering the volume of a filtrate; by taking glucose standard substance liquor as reference and adopting a phonel-sulfate method to measure the content of crude polysaccharide, and carrying out ethanol precipitation and acetone washing to the extraction liquor, thus finally obtaining the imperatoria polysaccharide powder. The extraction method disclosed by the invention has the specific beneficial effects that by considering influence of various factors on polysaccharide extraction and adopting an orthogonal experimental method to strictly control proportion of an extracting agent water and imperatoria powder, extraction duration, extraction time and extraction temperature in the extraction process, the whole extraction process is simple to operate, simplified in program, accurate in extraction and good in repeatability, and the extraction rate of imperatoria polysaccharide is improved.

Description

technical field [0001] The invention relates to a method for extracting chemical components of Wangcao, in particular to a method for extracting polysaccharides from Wangcao. Background technique [0002] King Grass (Latin scientific name Pennisetum purpureum K.Scbumacb, P.typhoideum Rich), Chinese alias Huangcao (English aliases Chinese sugarcane, japanese cane, king grass, north Indian sugarcane, uva cane), belongs to the genus Pennisetum of Gramineae Poaceae The plant is an excellent tropical herbage, which is widely cultivated in Hainan, Guangdong, and Guangxi in China, and introduced and cultivated in Jiangsu, Fujian, Yunnan, and Hunan. Foreign countries are mainly distributed in Central and South America. Perennial bushy tall grass. The root system is well developed. The stem resembles sugar cane. The leaves are elongated. The panicles are densely spike-shaped. Caryopsis fusiform, light yellow, shiny. It likes warm and humid climate conditions, not tolerant to s...

Claims

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Application Information

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IPC IPC(8): C08B37/00
Inventor 李茂
Owner TROPICAL CORP STRAIN RESOURCE INST CHINESE ACAD OF TROPICAL AGRI SCI
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