In vitro screening and isolation of human aromatase inhibitors from Cicer arietinum by a novel continuous online method combining chromatographic techniques

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EarlyView Article

  • Published: Nov 30, 2017
  • Author: Yuchi Zhang, Yan He, Chengyu Liu, Chunming Liu, Sainan Li
  • Journal: Journal of Separation Science

Abstract

Ultrafiltration liquid chromatography with mass spectrometry can efficiently and rapidly screen and identify ligands from the seeds of Cicer arietinum for human aromatase. Using this method, we identified 11 major compounds, including organic acids, organic acid glycosides, flavone glycosides, isoflavones, and isoflavone glycosides, as potent human aromatase inhibitors. A continuous online method, including pressurized liquid extraction, countercurrent chromatography, and preparative liquid chromatography, was developed for scaling up the production of these compounds with high purity and efficiency. The bioactivity of the separated compounds was assessed by an in vitro enzyme inhibition assay. This novel approach using a combination of ultrafiltration liquid chromatography with mass spectrometry and pressurized liquid extraction with countercurrent chromatography and preparative liquid chromatography as well as an in vitro enzyme inhibition assay could be applied to efficiently screen and isolate human aromatase inhibitors from complex samples and to the large‐scale production of functional food and nutraceutical ingredients.

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