Antimicrobial and Antioxidant Activity of plantain peels extracts.

Ling, Chong Mei (2007) Antimicrobial and Antioxidant Activity of plantain peels extracts. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Methanolic extract and fractions of "Pisang Saba" and "Pisang Raja" peels were assayed for their "antimicrobial" and "antioxidant" activity. The methanolic extract and dichloromethane fraction of Pisang Raja peels exhibited the strongest antimicrobial activity among all the extract and fractions by showing bigger inhibition zone in disc diffusion screening, whereas no antimicrobial potency was observed when the hexane fraction was tested against four pathogenic bacteria strains. A few extract and fractions were found to have comparable antimicrobial activity as the antibiotics. Minimum inhibitory concentration (MIC) and minimum bacteriacidal concentration (MBC) of extract or fractions which showed inhibitory activity in previous screening were determined by time-kill assay. Total phenolics contents of extract and fractions were evaluated using Folin-Ciocalteu method while the antioxidant activities were determined by 2, 2-diphenyl-l-picrylhydrazyl (OPPH) and ferric reducing antioxidant power (FRAP) assays. Results obtained showed that no antioxidant activity was found in the hexane fraction of both samples. Correlation of method for determination of total phenolic contents and antioxidant activity was analyzed by simple bivariate and partial correlation. Significant correlation was found between the antioxidant activities assayed by two different methods.

Item Type: Academic Exercise
Uncontrolled Keywords: antimicrobial, antioxidant , plantain peels extracts
Subjects: T Technology > TX Home economics > Nutrition. Foods and food supply
Divisions: SCHOOL > School of Food Science and Nutrition
Depositing User: MDM FAUZIAH MATSIN
Date Deposited: 14 May 2013 04:51
Last Modified: 13 Oct 2017 08:01
URI: http://eprints.ums.edu.my/id/eprint/5869

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