Journal
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
Volume 848, Issue 2, Pages 355-362Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jchromb.2006.10.061
Keywords
Huangqin; flavonoids; HPLC/DAD/ESI-MSn; Chinese medicine
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The root of Scutellaria baicalensis, called Huangqin in Chinese, is one of the most commonly used traditional Chinese medicines for the treatment of hepatitis. tumors, diarrhea, and inflammatory diseases. The major chemical constituents of Huangqin are flavonoids. In the present paper, HPLC-DAD-ESI-MSn was used to analyze flavonoids in the roots of S. baicalensis. A total of 26 flavonoids were identified or tentatively characterized. including 5 C-glycosides, 12 O-glycosides, and 9 free aglycones. Two C-glycosides, apigenin-6-C-glucyl-8-C-arabinoside and chrysin-6.8-di-C-glucoside, together with some O-glycosides, are reported from S. baicalensis for the first time. This method is simple, reliable and sensitive. and could be used for the quality control of Huangqin and its related preparations. (c) 2006 Elsevier B.V. All rights reserved.
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