Citation:
CHEN Xiao-Qiang, ZHOU Ying, YE Yang, CHENG Hao, YIN Jun-Feng. Extraction and Analysis of Alkali-soluble Tea Polysaccharides[J]. Chinese Journal of Applied Chemistry,
;2008, 25(12): 1496-1498.
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Alkali-soluble tea polysaccharides(ATPS) were extracted from tea residue after decocting of low-grade green tea.There were 3 kinds of homogeneous constituents whose mass fractions were about 5.96%,78.99% and 15.05%(according to the retention time) analyzed by means of HPGPC-ELSD in ATPS.The polysaccharides were made up of six kinds of monosaccharide residues(rhamnose,arabinose,xylose,mannose,glucose and galatose) determined by means of GC-MS as well as their molar ratio.CD spectra of ATPS in water showed a positive Cotton effect at 190 nm and negative Cotton effect at 203 nm.
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