Comparison of polysaccharide contents of Dendrobium officinale in collection periods / 中国药学杂志

ABSTRACT

OBJECTIVE: To compare the polysaccharide contents of Dendrobium officinale in collection periods. METHODS: The contents of polysaccharide and mannose were determined by phenol-sulfuric acid method and HPLC. The ratio of peak area between mannose and glucose was worked out by HPLC. RESULTS: The polysaccharide content of Dendrobium officinale distributed from 26.52% to 46.78%, the mannose content was between 13.36% and 25.25%, and the ratio of peak area between mannose and glucose was 2.48-5.91. CONCLUSION: The polysaccharide contents of Dendrobii officinalis from different sources were diverse, all of which accorded with the standard of Chinese Pharmacopoeia The content of polysaccharide in Dendrobium officinale from Yunnan province exceeded that from Zhejiang province, and the mannose content in biennial samples were higher than annual samples.