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Phytochemical and Pharmacognostic Analysis of Alstonia Scholaris (l) R. BR., A commonly available Medicinal Plant in Assam, India

Author Affiliations

  • 1Department of Chemistry, Gauhati University, Guwahati, 781014, Assam, INDIA
  • 2Brahmaputra Valley Academy, North Lakhimpur-787001, Assam, INDIA

Res.J.chem.sci., Volume 4, Issue (11), Pages 68-71, November,18 (2014)

Abstract

Phytochemical analysis of methanolic extracts of leaf, bark and latex of Alstonia scholaris (L) R.Br. revealed marked variation in overall content of phenolics in leaf, bark and latex extracts. The leaf extract had highest content of overall phenolics followed by bark and latex extracts. In the leaf extract, flavonoids and proanthocyanidins were present in abundance with values observed 89 mgQE/g DW and 92 mgCE/g DW, respectively, whereas the phenolics were only 49 mgGAE/gDW. In the bark extract, level of flavonoids and phenolics were comparatively lower than leaf extract, however proanthocynidins (66 mgCE/g DW) was found significantly higher. Latext extract had lowest content of phenolics (26 mgGAE/g DW), flavonoids (16 mgQE/g DW) and proanthocynidins (21mgCE/g DW). Methanol extracts of A. scholaris leaves, bark and latex extracts exhibited strong antioxidant activities in terms of scavenging DPPH free radicals. Antimicrobial microbial rtesponse have been observed.

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