Simultaneous quantification of chlorogenic acid, quercetin, and kaempferol in leaves by CE and HPLC techniques: method validation and comparative study.

Two analytical methods, CE and HPLC, were developed, validated, and compared for simultaneously determining chlorogenic acid, quercetin, and kaempferol in leaves collected from twelve different sources of Thailand. The determination was accomplished by CE on the uncoated fused silica capillary tube and by HPLC on the ZORBAX Eclipse Plus C18 column. Chlorogenic acid was found to have the highest average amount in leaves, followed by kaempferol and quercetin, respectively.

cytotoxic, genotoxic, and antityrosinase activities of root.

Wall. (Leguminosae), locally known as Non-tai-yak or An-chan-pa, commonly distributed in tropical nations and Southeast Asia. Regarding traditional Thai medical system, roots carry out a potential in dermatology.

Quality evaluation with reference to clitoriacetal and antioxidant activities of root.

Wall. (syn. Hemsl.

Quality evaluation of rhizome with reference to 5,7-dimethoxyflavone.

Wall. ex Baker is a medicinal plant found in the upper Northeastern regions of Thailand, which belongs to Zingiberaceae family. The present study aims to investigate the standardization parameters, to analyze chemical constituents of volatile oil by gas chromatography-mass spectrometry, and to determine the content of 5,7-dimethoxyflavone in rhizomes by thin-layer chromatography (TLC)-densitometry compared to TLC image analysis.

Chlorogenic acid content, essential oil compositions, and in vitro antioxidant activities of Chromolaena odorata leaves.

Chromolaena odorata (L.) R. M.