Process for extracting polysaccharide from astragalus root

A technology of polysaccharide and astragalus, which is applied in the field of extraction and separation of effective components of Chinese herbal medicine, can solve the problems of reduced economic benefit, high energy consumption and high boiling temperature, and achieves the advantages of overcoming low product purity, overcoming high energy consumption and high product purity. Effect

Inactive Publication Date: 2007-01-17
NANKAI UNIV
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Problems solved by technology

[0006] 2. Reduce economic benefits, waste energy and resources
Due to the high boiling temperature and high energy consumption, the economic benefits are directly reduced
On the other hand, since the flavonoids and saponins are extracted, in addition to affecting the purity and appearance of the product, these extracted flavonoids and saponins cannot be collected in the subsequent process, so that the two originally have very important medicinal properties. A considerable amount of material loss of value reduces the benefit of further extraction of flavonoids and saponins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Weigh 300g, 480g and 350g of astragalus rhizome powder respectively, and put them into 3000ml three-necked bottles filled with 1600ml, 2300ml and 1800ml of distilled water respectively. The water temperature is 65°C. Under stirring for 1 hour, 900ml, 1200ml and 1070ml of the aqueous extracts were filtered respectively. Cool to room temperature. Pour the above 3 parts of water extract into 1800ml, 2400ml and 2140ml of alcohol respectively, a large amount of precipitates are formed, after the upper alcohol solution is divided, the precipitates are washed once with 100ml alcohol respectively, and the precipitates are dried. The results are listed in Table 2.

[0017] After the first extraction of the third test, 1070ml of distilled water was added for the second extraction. The extraction process was as above, and the polysaccharide was 10.1 g, and the yield was 2.9%.

[0018] The polysaccharide extracted by the above method is called NGF.

[0019] The temperature depe...

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Abstract

The invention is method for abstracting polysaccharide from 2, including the following steps: abstract root and stalk in the water of 60~85deg.C, cool the filtrate, add into alcohol to deposit, dry it, purify it through dissolving in water and other steps to get the deposit of polysaccharide. Meanwhile, the invention can abstract kinds of substances like flavone compound, solve the problems of low purity and high energy used; its has high selectivity for abstracting techniques, simple structure, low energy used, high purity and no pollution to the environment.

Description

technical field [0001] The invention relates to the extraction and separation of effective components of Chinese herbal medicines, in particular to a method for extracting polysaccharides from Astragalus membranaceus. Background technique [0002] Astragalus memdranaceus Bge is a leguminous plant, mainly produced in Shanxi, Gansu, Heilongjiang, Inner Mongolia, Jilin and other places. Astragalus Polysaxxharide (APS) is one of the main active ingredients. Its main biological activity is to enhance immune function, have the proliferation of plasma cells, and have the functions of anti-infection, detoxification and liver protection. At the same time, it has anti-tumor and anti-radiation effects, and can improve myocardial contractility, reduce infarct size, and reduce myocardial damage in dogs with acute infarction. Astragalus contains a variety of polysaccharides, and its composition and main physicochemical properties are shown in Table 1. [0003] Due to the multiple biolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 栗方星刘冬平王惠元康健赵艳萍孙晓晨卜显和
Owner NANKAI UNIV
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