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Phosphated Arillus Longan polysaccharide and synthesis method thereof

A technology of longan meat polysaccharide and phosphate ester, which is applied in the field of phosphorylated longan meat polysaccharide and its synthesis

Inactive Publication Date: 2012-11-14
GUANGXI MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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But there is no report yet on the method of artificially synthesizing phosphated longan meat polysaccharides

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  • Phosphated Arillus Longan polysaccharide and synthesis method thereof
  • Phosphated Arillus Longan polysaccharide and synthesis method thereof
  • Phosphated Arillus Longan polysaccharide and synthesis method thereof

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Embodiment Construction

[0031] The technical solution of the present invention will be further described below through examples.

[0032] The synthetic method of phosphorylated longan meat polysaccharide of the present invention comprises the following steps:

[0033] (1) Separation and extraction of polysaccharides from longan meat

[0034] Peel the dried longan fruit and remove the core. According to the mass volume ratio of longan meat:distilled water=1:4, use hot water to extract, control the temperature at 90°C for 4 hours, filter, repeat the extraction of the filter residue 3 times, combine the filtrate, 65°C Concentrate with a rotary evaporator, wait until the extract is concentrated to a viscous shape, slowly pour it into 95% ethanol that is 4 times its volume while it is hot, seal it and let it stand, the alcohol precipitate is longan meat crude polysaccharide,

[0035] (2) Remove protein and pigment

[0036] Weigh a certain amount of longan meat crude polysaccharide and prepare a 5.00g / ml...

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Abstract

The invention relates to a phosphated Arillus Longan polysaccharide which is composed of glucose, arabinose, galacturonic acid, levulose and sorbose. The molecular weight of the phosphated Arillus Longan polysaccharide is 112518.5. The synthesis method of the phosphated Arillus Longan polysaccharide comprises the following steps: (1) separating and extracting Arillus Longan polysaccharide; (2) removing proteins and pigments; (3) carrying out graded purification on the Arillus Longan polysaccharide by a diethylaminoethyl cellulose column; (4) purifying the Arillus Longan polysaccharide by a Sephacryl S-300 HR column; and (5) esterifying the Arillus Longan polysaccharide with a phosphating reagent POCl3. According to the invention, an artificial synthesis method can be used for preparing the phosphated Arillus Longan polysaccharide which contains glucose, arabinose, galacturonic acid, levulose and sorbose.

Description

technical field [0001] The invention relates to a phosphorylated longan meat polysaccharide and a synthesis method thereof. Background technique [0002] The synthesis and biological activity of glycosyl phosphate compounds, especially glucosyl phosphate compounds, have been reported for a long time. Studies have shown that phosphate derivatives of polysaccharides have biological activities such as antitumor, antiviral, antibacterial and immunomodulators. Monosaccharides such as fructose and glucose do not have biological activities such as anti-tumor and anti-virus, but they have these activities after phosphorylation. Hayachi et al. found that glucosyl phosphate derivatives have biological activities such as anti-tumor and anti-virus, and are used clinically as drugs. Fructose phosphate can be used to treat severe cerebral infarction, antagonize the nephrotoxicity of gentamicin, and assist in the treatment of arrhythmia. The antitumor activity test results of N,N-bis(2-...

Claims

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Application Information

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IPC IPC(8): C08B37/00C12S3/02
Inventor 李雪华宁苑灵蒋洁肖庆何舟蒙法艳唐小丽黄燕军李福森魏涌标
Owner GUANGXI MEDICAL UNIVERSITY
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