Antioxidant activity of plants methanolic extracts containing phenolic compounds

N. Huda-Faujan, A. Noriham, Norrakiah Abdullah Sani, Abd. Salam Babji

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

The presence of natural antioxidant in plants is well known. This paper reports the antioxidative activities of some methanolic plant extracts namely 'ulam raja' (Cosmos caudatus), kesum' (Polygonum minus), 'selom' (Oenanthe javanica), 'pegaga' (Centella asiatica) and 'curry leaf' (Murraya koenigii). The analysis carried out was total phenolic content, ferric reducing power, ferric thiocyanate (FTC) and thiobarbituric acid (TBA) tests. From the analyses, M. koenigii had the highest yield extraction (1.65%), highest total phenolic content (38.60 mg TAE/ 100 g fresh weight) and antioxidant activity (70.60%) using FTC method. Increasing the concentration of the extracts resulted in increased ferric reducing antioxidant power for all methanolic extracts tested. TBA analysis showed that C. caudatus extract had the highest antioxidant effect. Total phenolic content had positive correlation with antioxidant capacity (r = 0.451). This shows that the plants, especially M. koeniigi, may be potent source of natural antioxidants.

Original languageEnglish
Pages (from-to)484-489
Number of pages6
JournalAfrican Journal of Biotechnology
Volume8
Issue number3
Publication statusPublished - 4 Feb 2009

Fingerprint

Plant Extracts
Cosmos caudatus
plant extracts
Bergera koenigii
phenolic compounds
Antioxidants
antioxidant activity
antioxidants
thiocyanates
thiobarbituric acid
Oenanthe javanica
extracts
Oenanthe
Centella asiatica
Murraya
Centella
Polygonum
Skates (Fish)
Weights and Measures
testing

Keywords

  • Antioxidative activities
  • Plants
  • Reducing power
  • Thiobarbituric acid
  • Total phenolic content

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology
  • Genetics
  • Molecular Biology
  • Agronomy and Crop Science

Cite this

Antioxidant activity of plants methanolic extracts containing phenolic compounds. / Huda-Faujan, N.; Noriham, A.; Abdullah Sani, Norrakiah; Babji, Abd. Salam.

In: African Journal of Biotechnology, Vol. 8, No. 3, 04.02.2009, p. 484-489.

Research output: Contribution to journalArticle

Huda-Faujan, N. ; Noriham, A. ; Abdullah Sani, Norrakiah ; Babji, Abd. Salam. / Antioxidant activity of plants methanolic extracts containing phenolic compounds. In: African Journal of Biotechnology. 2009 ; Vol. 8, No. 3. pp. 484-489.
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