Abstract: Polysaccharides from fruit of Physalis was isolated and determined by spectrophotometry. The content of polysaccharide measured by anthrone-H2SO4 colorimetry under 580nm, was 5.22% with 1.35% of RSD (n=3).The results showed that the method used in this paper was simple, and the colour of the treated samples was stable in 4h, while the average recovery value for the polysaccharide measured was 98.9%+1.40% with 1.42% of RSD(n=3).

Key words: Physalis fruit； polysaccharides； anthrone-sulfuric acid methed； determination；  , Physalis fruit； polysaccharides； anthrone-sulfuric acid methed； determination；