Abstract:
BACKGROUND:Radix Polygoni Multiflori is the dried root tuber of Polygonum multiflorum Thunb. (Fam. Polygonaceae). According to Chinese medicine theory, raw (R-RPM) and processed (P-RPM) Radix Polygoni Multiflori possess different properties. The present study investigates the differences in chemistry between raw and processed Radix Polygoni Multiflori. METHODS:Five pairs of R-RPM and P-RPM as well as 15 commercial decoction pieces were analyzed with high performance liquid chromatography (HPLC) and mass spectrometry (MS). RESULTS:Two anthraquinones, namely emodin-8-O-(6'-O-malonyl)-glucoside and physcion-8-O-(6'-O-malonyl)-glucoside disappeared or decreased significantly and 2,3,5,4'-tetrahydroxystilbene-2-O-beta-D-glucopyranoside, emodin-8-O-beta-D-glucopyranoside and physcion-8-O-beta-D-glucopyranoside decreased after the R-RPM samples being processed. On the other hand, the contents of emodin and physcion generally increased after processing. CONCLUSION:The present study indicates that processing Radix Polygoni Multiflori may change the contents and types of chemicals in it. These changes are probably responsible for the various pharmacological effects of R-RPM and P-RPM as well as hepatotoxicity.
journal_name
Chin Medjournal_title
Chinese medicineauthors
Liang Z,Chen H,Yu Z,Zhao Zdoi
10.1186/1749-8546-5-29subject
Has Abstractpub_date
2010-08-12 00:00:00pages
29issn
1749-8546pii
1749-8546-5-29journal_volume
5pub_type
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