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Method for extracting polysaccharide by adopting decompressing inner ebullition

A technology for internal boiling under reduced pressure and polysaccharide extraction, which is applied in the field of polysaccharide extraction by internal boiling under reduced pressure to achieve the effect of improving efficiency

Inactive Publication Date: 2012-10-17
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the extraction of biological macromolecular polysaccharides by using the vacuum internal boiling extraction method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Extraction of Panax notoginseng polysaccharide

[0015] Moisten Panax notoginseng powder with 0.8 times of the quality of the extracted material and 55% ethanol aqueous solution, then add 5% ethanol aqueous solution with an amount of 8 times the quality of the extracted material and a temperature of 45 ° C, and reduce the pressure to 0.026 MPa, pretreatment and extraction for 2 minutes, filtering after removing the pressure, to obtain pretreated wet Panax notoginseng powder; adding hot water with an amount of 15 times the mass of Panax notoginseng and a temperature of 60°C to the wet Panax notoginseng powder, and reducing the pressure to 0.028MPa, extract for 8 minutes, remove the pressure and filter to obtain the polysaccharide filtrate; the polysaccharide filtrate is concentrated to 1 / 10 of the stock solution, then add ethanol with a volume 2.5 times the volume of the concentrated solution and a mass concentration of 95%, leave it for 5 hours, filter, The w...

Embodiment 2

[0016] Embodiment two: Lentinan is extracted

[0017] Moisten the shiitake mushroom powder with 1.2 times the quality of the extracted material and 60% ethanol aqueous solution with a mass concentration, then add 15% ethanol aqueous solution with an amount of 8 times the quality of the extracted material and a temperature of 45°C, and reduce the pressure to 0.028MPa , extract for 2 minutes, filter after removing the pressure, and obtain the pretreated wet extracted material; add hot water with an amount 15 times the mass of shiitake mushrooms and a temperature of 55°C, and reduce the pressure to 0.026MPa, extract for 6 minutes, remove Filter after pressure to obtain the polysaccharide extract; concentrate the polysaccharide extract to 1 / 10 of the original solution, then add ethanol with a volume 2.5 times the volume of the concentrate and a mass concentration of 95%, leave it for 5 hours, filter, and dry the wet filter cake to obtain lentinan . Compared with the traditional e...

Embodiment 3

[0018] Embodiment three: Lycium barbarum polysaccharide extraction

[0019] Moisten wolfberry powder with 1 times the mass of the extracted material and 60% ethanol aqueous solution, then add 10% ethanol aqueous solution with an amount of 10 times the mass of the extracted material and a temperature of 45°C, and reduce the pressure to 0.028MPa , extracted for 3 minutes, filtered after removing the pressure, and obtained the pretreated wet extracted material; added hot water with an amount 15 times the mass of Lycium barbarum and a temperature of 55°C, and reduced the pressure to 0.025MPa, extracted for 6 minutes, removed Filtrate after pressure to obtain polysaccharide extract; concentrate the polysaccharide extract to 1 / 8 of the original solution, then add ethanol with a volume 2.3 times the volume of the concentrate and a mass concentration of 95%, leave it for 8 hours, filter, and dry the wet filter cake to obtain Lycium barbarum polysaccharide . Compared with traditional ...

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PUM

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Abstract

The invention relates to an extracting method of polysaccharide, which is characterized by comprising the following steps of: firstly, taking low-concentration ethanol as a solvent to extract and separate out micromolecule components by adopting a decompressing inner ebullition; then taking water as a solvent to extract polysaccharide from materials to be extracted by adopting the decompressing inner ebullition. Since the extracting temperature is low and the extracting time is short, starch can not be pasted and the swelling of the materials is small, the diffusion of the micromolecules of the polysaccharide is not influenced, and impurities of an extracting solution are less and the filtration is easy. Compared with the traditional polysaccharide extracting and separating technology, the consumption level of the ethanol of the extracting method of polysaccharide is reduced by more than 1 time, the speed of the extracting process is increased by 10-20 times, and the yield and the purity of the polysaccharide are respectively increased by 10-50 percent and 10-40 percent.

Description

technical field [0001] The invention relates to polysaccharide extraction and separation technology, in particular to a method for extracting polysaccharides by internal boiling under reduced pressure. Background technique [0002] Polysaccharides have a variety of biological activities. They are polymers of aldose or ketose linked together by glycosidic bonds. They are composed of more than 20 to tens of thousands of monosaccharide molecules. They mainly exist in plants and microorganisms in a free state or in combination. . It has a variety of pharmacological effects and has attracted more and more attention. Polysaccharides are polar macromolecular compounds. Water-soluble small molecules such as monosaccharides and amino acids and macromolecules such as starch and protein exist in the materials that coexist with polysaccharides. Therefore, most polysaccharides are extracted by ethanol reflux pretreatment to separate Small molecular impurities are then extracted using h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 韦藤幼童张法陈晓光翁艳英彭梦微
Owner GUANGXI UNIV
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