Method for preparing L-fucoidan in sea tangle

The invention relates to a simple method for preparing L-fucoidan by a kind of sea-tangle from Qingdao as materials which comprises: extracting and purifying the said sea-tangle by the water extract and ethanol precipitation to get purified fucoidan sulfate, then hydrolyzing sulphuric acid, filterin...

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Bibliographic Details
Main Authors ZUHONG XU, QUANBIN ZHANG, ZHIEN LI, HONG ZHANG, ZENGQIN ZHAO, XIZHEN NIU
Format Patent
LanguageEnglish
Published 21.09.2005
Edition7
Subjects
CHEMISTRY
DERIVATIVES THEREOF
METALLURGY
NUCLEIC ACIDS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC CHEMISTRY
SUGARS
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Summary:The invention relates to a simple method for preparing L-fucoidan by a kind of sea-tangle from Qingdao as materials which comprises: extracting and purifying the said sea-tangle by the water extract and ethanol precipitation to get purified fucoidan sulfate, then hydrolyzing sulphuric acid, filtering and the filtrate desalting through a column, deoxidizing and decolouring, filtering and the filter liquor rotating and concentrating in vacuum, alcohol depositing, the filter liquor rotating and concentrating to get syrup in vacuum, alcohol depositing, the filter liquor rotating and concentrating to get syrup in vacuum, adding the right amount mixture of alcohol and acetone, and adding several L-fucoidan particles to standard seed and crystal. The production purity is 98.1 %, and the productivity is 16.2-17.0 % in the invention.
Bibliography:Application Number: CN2004175712