[Preliminary study on chemical changes in the decocting process of radix et rhizoma Rhei].
OBJECTIVE
To understand the chemical changes in the decocting process of Radix et Rhizoma Rhei.


METHODS
Comparing the contents of many kinds of anthraquinones in the crude drug, decoction and drug sediments of Radix et Rhizoma Rhei by HPLC.


RESULTS
The contents of combined and free anthraquinones changed after the crude drug was decocted.


CONCLUSIONS
These changes may be related to the hydrolysis of combined anthraquinones, the decomposition of free anthraquinones, and the inter-transition among anthraquinones.
Su
Z
Z
Guangzhou University of Traditional Chinese Medicine, Guangzhou 510407.
Zeng
Y
Y
Zhou
H
H
Wai
J
J
Lian
Y
Y
Lu
X
X
Liu
L
L
D000880:Anthraquinones / Q000032:analysis*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D004642:Emodin / Q000032:analysis; D006358:Hot Temperature; D006899:Mixed Function Oxygenases / Q000032:analysis; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012250:Rheum / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry
D000880:Anthraquinones; D004365:Drugs, Chinese Herbal; D006899:Mixed Function Oxygenases; D004642:Emodin; C020491:rhein