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Madan Mohan Pandey,Raghavan Govindarajan,Ajay Kumar Singh Rawat,Yashpal Singh Pangtey,Shanta Mehrotra 한국생약학회 2004 Natural Product Sciences Vol.10 No.1
A simple quantitative HPLC method has been developed for differentiating two plants of Asteraceae family viz. S. costus and A. lappa by using a pharmacologically active constituent chlorogenic acid and symmetry C18 column clubbed with a binary gradient using acetonitrile: 0.1% phosphoric acid and detected using a PDA at 327nm. Quantitatively chlorogenic acid was found to be more in A. lappa (0.140%) than in S. costus (0.087%).