On the Extraction and determination of Gel Polysaccharide from Three Kinds of Aloe

From three kinds of aloe gel to extract gel polysaccharide by the way of first alcohol precipitation and after water extraction,taking the standard solution of mannitol to draw standard curve,colored by Phenol-sulfuric acid with the national standard method,determined the content of polysaccharide in 489nm,the results show that the content of Curacao aloe gel polysaccharide is 4.90×10-1%,the content of Chinese aloe polysaccharide is 4.745×10-1%, and the content of tree aloe polysaccharide content is 4.605×10-1%.Which can provide important theoretical basis for the further development and use of aloe.