Effect of Different Extracting Methods on the Content Determination of Polysaccharide from Caulis Derdrobii / 中国药房

ABSTRACT

OBJECTIVE: To study on the effect of different extracting methods on the content determination of polysaccharide from Caulis Dendrobii.METHODS: Polysaccharide was extracted from Caulis Dendrobii respectively by reflux extraction,improved reflux extraction,ultrasound wave extraction and ultrasonic-assisted thermal reflux extraction.The content of polysaccharide was determined by phenol-sulfuric acid method.RESULTS: The determined results using these methods were as follows(13.473?0.634)%,(15.692?0.743)%,(11.87?0.536)% and (16.29?0.407)%.CONCLUSION: The content determination of polysaccharide from Caulis Dendrobii was associated with the extraction method.The polysaccharide from Caulis Dendrobii could be extracted more thoroughly and rapidly by ultrasonic-assisted extraction technology.Therefore this method could be used to pretreat the sample in content determination of Caulis Dendrobili polysaccharide.