Abstract: The interference components such as monosaccharide, disaccharide, oligosaccharide, tea polyphenol and amino acids in tea samples were removed by back- flowing with 80% ethanol. The contents of polysaccharide extracted with water in tea samples, which were collected from Wu- Yuan County of Jiangxi Province, were measured by anthrone- H2SO4 colorimetry, Meantime, compared with the polysaccharide contents in other kinds of tea. the results showed that the method used in this paper was simple, the color of the treated samples was stable in 4 h and the average value of the recovery for polysaccharide measurement was 99.2% ± 1.80% with 1.82% of RSD (n=3). The contents of polysaccharide in green tea of Wu- Yuan County ranged between 4.17% ? 6.35% and 3.10% ? 3.53% in CTC black tea. The different content might be related to the species, altitude, habitat and kind of tea grown.

Key words: Tea polysaccharide Anthrone- sulfuric acid method Determination Wu- Yuan County