[Determination of morusin in cortex mori].
OBJECTIVE
To determine the contents of morusin in Sangbaipi (Cortex Mori) of different commercial grades and species and obtained from different regions.


METHODS
Contents of morusin were determined by HPLC on an Alltima C18 column (4.6 mm x 250 mm, 5 microm) with acetonitrile-water (58:42) as mobile phase. UV detection was conducted at 270 nm.


RESULTS
The amounts of morusin were found to vary among samples of Cortex Mori bearing a yellow-brown outer layer and those without the yellow-brown cork layer. The morusin contents were also related to the thickness of Cortex Mori.


CONCLUSIONS
The method was simple, reproducible and reliable. It can be applied to the quality assessment of Cortex Mori.
Zong
Yu-ying
YY
School of Chinese Medicine, The Chinese University of Hongkong, Shatin, Hongkong, China.
Ip
Siu-po
SP
Dong
Ting-xia
TX
Che
Chun-tao
CT
D002681:China; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000032:analysis* / Q000592:standards; D017753:Ecosystem; D005419:Flavonoids / Q000032:analysis*; D031625:Morus / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry; D011786:Quality Control; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; C057451:morusin