Abstract
Pluchea indica (L.) Less., Asteraceae, is a medicinal plant which contains a high amount of phenolic compounds such as caffeoylquinic acid derivatives. The leaves have been traditionally used as a nerve tonic and extensively as herbal tea. This study aimed to develop and validate an HPLC method to quantitatively analyze six caffeoylquinic acid derivatives, viz. 3-O-caffeoylquinic acid, 4-O-caffeoylquinic acid, 5-O caffeoylquinic acid, 3, 4-O-dicaffeoylquinic acid, 3, 5-O-dicaffeoylquinic acid, and 4, 5-O-dicaffeoylquinic acid in P. indica leaf extract. HPLC was carried out in a Hypersil BDS C18-column eluted with 0.5% acetic acid in water and methanol using gradient elution with a flow rate of 1 ml/min and detection at 326 nm. The method validation was performed to assure its linearity, precision, accuracy and limits of detection and quantitation. Several extraction techniques including maceration, decoction, digestion, Soxhlet extraction, and ultrasound extraction, were used to extract active constituents. The ultrasound extraction with 50% ethanol yielded the highest concentration of these caffeoylquinic acid derivatives in the P. indica leaf extract. Our developed HPLC method is simple and reliable for a routine analysis of the six caffeoylquinic acids in P. indica leaves and could potentially be applied to be used in commercial herbal products.
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SK’s contribution included HPLC analysis, analyzing the results,and preparing the paper. SC’s contribution included analyzing the results and preparing the paper. BV’s contribution included collecting samples, designing and performing laboratory work, analyzing the results, and preparing the paper. The authors have read the final manuscript and approved of the submission.
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Kongkiatpaiboon, S., Chewchinda, S. & Vongsak, B. Optimization of extraction method and HPLC analysis of six caffeoylquinic acids in Pluchea indica leaves from different provenances in Thailand. Rev. Bras. Farmacogn. 28, 145–150 (2018). https://doi.org/10.1016/j.bjp.2018.03.002
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DOI: https://doi.org/10.1016/j.bjp.2018.03.002