Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3835

Full Length Research Paper

Microwave-assisted extraction of tannins from Chinese herb Agrimonia pilosa Ledeb

Zhe-xiong Jin1, Bao-Qing Wang1* and Zhi-Jie Chen2
1College of Pharmacy, Harbin University of commerce, Harbin, Heilongjiang Province, 150076, P. R. China. 2College of Science, Harbin Engineering University, Harbin, Heilongjiang Province, 150001, P. R. China.
Email: [email protected]

  •  Accepted: 16 August 2010
  •  Published: 04 November 2010

Abstract

Tannins are water soluble polyphenols. Previous studies showed that Agrimonia pilosa Ledeb contains high levels of tannins. In this study, a microwave-assisted extraction (MAE) method was evaluated for the extraction of tannins. The optimal extraction conditions were as follows: irradiation power 500 W, ratio of solvent to material 35 ml/g, irradiation temperature 30°C and irradiation time 15 min. Under these conditions, the extraction yields of tannins from A. pilosa ledeb achieved was 128.65 mg/g. The MAE method provided a good alternative for the extraction of tannins from A. pilosa ledeb.

 

Key words: Agrimonia pilosa Ledeb, microwave-assisted extraction, tannins.

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