Nitric oxide radical scavenging active components from Phyllanthus emblica L

Plant Foods Hum Nutr. 2006 Mar;61(1):1-5. doi: 10.1007/s11130-006-0001-0.

Abstract

An activity-directed fractionation and purification process was used to identify the nitric oxide (NO) scavenging components of Phyllanthus emblica. Dried fruit rind of P. emblica was extracted with methanol and then separated into hexane, ethyl acetate, and water fractions. Among these only the ethyl acetate phase showed strong NO scavenging activity in vitro, when compared with water and hexane phases. The ethyl acetate fraction was then subjected to separation and purification using Sephadex LH-20 chromatography. Five compounds showing strong NO scavenging activity were identified by spectral methods (1H NMR, 13C NMR, and MS) and by comparison with literature values to be Gallic acid, Methyl gallate, Corilagin, Furosin, and Geraniin. In addition, HPLC identification and quantification of isolated compounds were also performed. Gallic acid was found to be a major compound in the ethyl acetate extract and Geraniin showed highest NO scavenging activity among the isolated compounds.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / chemistry
  • Antioxidants / isolation & purification*
  • Chromatography, High Pressure Liquid
  • Free Radical Scavengers / isolation & purification*
  • Free Radical Scavengers / metabolism
  • Free Radicals
  • Gallic Acid / isolation & purification*
  • Gallic Acid / metabolism
  • Magnetic Resonance Spectroscopy
  • Nitric Oxide / isolation & purification*
  • Nitric Oxide / metabolism
  • Phyllanthus emblica / chemistry*
  • Plant Extracts / chemistry

Substances

  • Antioxidants
  • Free Radical Scavengers
  • Free Radicals
  • Plant Extracts
  • Nitric Oxide
  • Gallic Acid