The Determination of Polysaccharides from Several Herba Dendrobii and Different Medical Parts of D. nobile Lindl,D. fimbriatum Hook,D. denneanum Kerr and D. chrysotoxum Lindl

Objective To determine polysaccharide from several Herba Dendrobii and different medical parts of D.nobile Lindl,D.fimbriatum Hook,D.denneanum Kerr,and D.chrysotoxum Lindl.MethodsUV method was used.ResultsThe content of polysaccharides in different Herba Dendrobii was as follows: D.thyrsiflorum.Rchb.f of 18.96%,D.fimbriatum Hook of 24.89%,D.nobile Lindl of 20.49%,D.crepidatum Lindl of 15.83%,D.pendulum Roxb of 8.27%,D.denneanum Kerr of 16.32%,D.chrysotoxum Lindl of 15.33 %,D.loddigesii Rolfe of 28.28%,D.aphyllum(Roxb.)C.E.Fisch of 9.26%;the contents of polysaccharides from root,stem and leaf in D.nobile Lindl Lindl were 15.36%,20.49% and 22.30%;In D.fimbriatum Hook were 17.56%,24.89%,20.88%;In D.denneanum Kerr were 9.48%,16.32%,17.42%;In D.chrysotoxum Lindl were 10.06%,15.33%,9.81%.ConclusionThis method is simple,sensitive and accurate.The content of polysaccharides is higher in leaves from different parts,and we should try to keep leaves when medicinal material is processed.