[Influences of different initial processing methods on Rheum palmatum].
OBJECTIVE
To choose the optimum initial processing methods of Rheum palmatum.


METHODS
Fresh crude Rheum palmatum was sliced and dealt with the different drying methods such as sun drying, shady drying, microwave heating and various temperatures drying. The content of the Anthraquinones derivatives, slicing colors and dried rates were used as evaluation indexes. The sliced Rheum palmatum was compared with the traditional processing.


RESULTS
Sliced fresh crude Rheum palmatum had the low content of the Anthraquinones derivatives and dry rates, slicing colours had obviously changes. For various drying methods, smoking drying was superior to sun drying, shady drying, microwave heating and various temperatures drying methods.


CONCLUSIONS
Fresh crude Rheum palmatum is not suitable for slicing processing. The best drying method is smoking drying.
Gansu College of Traditional Chinese Medicine, Key Laboratory of Chemistry and Quality for Traditional Chinese Medicine of Gansu Province, Lanzhou 730000, China. liyunherb@163.com
Yun
Y
Li
Xiao-Lou
XL
Miao
Ping-An
PA
Wu
Yue-Feng
YF
Li
Feng-Lin
FL
Liu
Shu-Chang
SC
Wei
D000880:Anthraquinones / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D003890:Desiccation / Q000379:methods*; D008872:Microwaves; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D011786:Quality Control; D015203:Reproducibility of Results; D012250:Rheum / Q000737:chemistry* / Q000254:growth & development; D027343:Rhizome / Q000737:chemistry; D013678:Technology, Pharmaceutical / Q000379:methods
D000880:Anthraquinones