FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (22): 119-122.doi: 10.7506/spkx1002-6630-201322024

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Purification and HPLC Analysis of Caffeoylquinic Acids from Kudingcha Made from Ilex kudingcha C.J. Tseng

WANG Qing-chuan,ZHANG Xin,ZHANG Wen-qin,SUN Xin-qi,HU Bing,SUN Yi,ZENG Xiao-xiong   

  1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2013-01-16 Revised:2013-10-29 Online:2013-11-25 Published:2013-12-05

Abstract:

Six caffeoylquinic acid (CQA) derivatives were separated by column chromatography and semi-preparative
high performance liquid chromatography (HPLC) from the crude extract of Ilex kudingcha C.J. Tseng. An HPLC method
with DAD and TSKgel ODS-80 TsQA column was developed for the simultaneous determination of CQAs in Kudingcha
made from Ilex kudingcha C.J. Tseng. The results demonstrated that six CQA derivatives with 95% purity, 3-CQA,
4-CQA, 5-CQA, 3,4-diCQA, 3,5-diCQA and 4,5-diCQA, could be obtained through the purification of Ilex kudingcha
C.J. Tseng by semi-preparative high performance liquid chromatography (HPLC). The chromatographic conditions were
determined as follows: oven temperature set at 40 ℃, gradient elution with methanol/formic acid (5‰) with a flow rate
0.5 mL/min, and detection at a wavelength of 326 nm. As results, good linearity was observed with correlation coefficients of
0.9992–0.9999, the average recovery of the CQA derivatives from spiked samples was 96.34%, with relative standard
deviations (RSD) less than 3% (n = 3).

Key words: Kudingcha, Ilex kudingcha C.J. Tseng, caffeoylquinic acids, purification, high performance liquid chromatography(HPLC)

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