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Citation: LU Yu, HUANG Zhi-Shu, MA Lin, GU Lian-Quan. Extraction,Separation, HPLC Analysis of the Main Anthraquinones in Polygonum cuspidatum[J]. Chinese Journal of Applied Chemistry, ;2004, 21(5): 433-436. shu

Extraction,Separation, HPLC Analysis of the Main Anthraquinones in Polygonum cuspidatum

LU Yu ^a,c ,
HUANG Zhi-Shu ^b,, ,
MA Lin ^a ,
GU Lian-Quan ^a,b

1.
a School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou;
2.
b School of Pharmaceurical Science, Sun Yat-sen University, Guangzhou 510080;
3.
c Jiangxi China-Germany Joint Research Institute, Nanchang

Corresponding author: HUANG Zhi-Shu,
Received Date: 11 July 2003
Available Online: 20 November 2003
Fund Project: 国家自然科学基金(20002009,20272085)资助课题 (20002009,20272085)广东省自然科学基金(021770)资助课题 (021770)

The extraction and separation processes of the main anthraquinones in Polygonum Cuspidatum, including emodin, rhein and physcion, have been carried out and improved. More pure emodin products without physcion could be obtained from a small amount and by repetitive extraction and stepwise collection. The extraction yields of emodin and physcion were more than 70%, with purity greater than 96%. The HPLC analysis method of anthraquinones was improved by using C18 column instead of C8 column, with detection wave-length of 437 nm. The method could afford to simutanniously determine the main anthraquinones in Polygonum Cuspidatum.
- anthraquinone,
- Polygonum Cuspidatum,
- separation,
- HPLC
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