Abstract
Aristolochiae Fructus (“Madouling”) is derived from the fruits of Aristolochia contorta and A. debilis (Aristolochiaceae). These two species contain potentially nephrotoxic constituents, but are officially used in China. Distinction of constituents and toxicity between these two species remains unclear. A high-performance liquid chromatography method was developed and validated for the simultaneous determination of seven analogues of aristolochic acid (aristolochic acids I, II, IIIa, IVa and VIIa), as well as aristololactams I and II in Aristolochiae Fructus. Chromatographic separation was achieved on a Zorbax SB-C18 column with a gradient mobile phase comprising acetonitrile and 1 % acetic acid–30 mM triethylamine (20:1, v/v) buffer. Analytes were detected with a diode array detector at 250 and 260 nm. The contents of seven constituents in samples (11 batches of A. contorta fruits, 15 batches of A. debilis fruits and 33 commercial samples of Madouling) were determined. The content of aristolochic acid IVa was higher than that of aristolochic acid VIIa in A. contorta fruits, whereas the opposite was true in A. debilis fruits. This feature can be used to distinguish the two species from each other and identify the resource plant of Madouling. Through a morphological method and a newly found principle based on the ratio AA-IVa/AA-VIIa, we found that the 33 commercial samples collected from 12 provinces in China were all derived from the fruits of A. contorta.
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Acknowledgments
This work was supported financially by the State Administration of Traditional Chinese Medicine of the People’s Republic of China (Grant number 2001BA701A11-07), the National Natural Science Foundation of China (30873466) and the National Eleventh Five-year Key Technologies R&D Program of China (2006BAI14B01). The authors thank Mr. Ce-Ming Tan, Mr. De-Qun Wang, Mr. Guo-Ping Peng and Mr. Min-Jian Qin for helpful support during plant collections.
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Y.-Q. Xu and X.-W. Li contributed equally to this work.
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Xu, YQ., Li, XW., Liu, GX. et al. Comparative study of the contents of analogues of aristolochic acid in two kinds of Aristolochiae Fructus by high-performance liquid chromatography. J Nat Med 67, 113–122 (2013). https://doi.org/10.1007/s11418-012-0664-9
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DOI: https://doi.org/10.1007/s11418-012-0664-9