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Antiaflatoxigenic and antioxidant activities of Garcinia extracts.

Joseph, G. S. and Jayaprakasha, G. K. and Selvi, A. T. and Jena, B. S. and Sakariah, K. K. (2005) Antiaflatoxigenic and antioxidant activities of Garcinia extracts. International Journal of Food Microbiology, 101 (2). pp. 153-60. ISSN 0168-1605

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Abstract

The effect of hexane and chloroform extracts from the fruit rinds of Garcinia cowa and Garcinia pedunculata on the growth and aflatoxin production in Aspergillus flavus was studied using peanut powder as a model food system. The growth of A. flavus was completely inhibited by the hexane and chloroform extracts from G. cowa and chloroform extract from G. pedunculata at 3000 ppm concentration, which was considered as the minimum inhibitory concentration (MIC). The MIC for the hexane extract of G. pedunculata was at 4000 ppm. Both the extracts from G. cowa inhibited aflatoxin B1 production upto 100% at a lower concentration of 2000 ppm. It was observed that, at lower concentration of the extracts from G. cowa and G. pedunculata, the degree of inhibition of aflatoxin production was much higher than the inhibition of fungal growth. The hexane and chloroform extracts from G. cowa and G. pedunculata were also studied for their antioxidant capacity by the formation of phosphomolybdenum complex at 100 ppm concentration and reducing power by potassium ferricyanide reduction method at various concentrations. Hexane and chloroform extracts from G. cowa showed higher antioxidant capacity than G. pedunculata extracts. Similarly, both the extracts from G. cowa showed higher reducing power than the extracts from G. pedunculata. The antiaflatoxigenic activities of the extracts from G. cowa and G. pedunculata may be due to their effective antioxidative properties, which could suppress the biosynthesis of aflatoxin.

Item Type: Article
Uncontrolled Keywords: Garcinia cowa; Garcinia pedunculata; Aflatoxin; Antioxidant activity
Subjects: 600 Technology > 08 Food technology > 24 Fruits
600 Technology > 08 Food technology > 32 Antioxidants
Divisions: Human Resource Development
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 22 Mar 2018 08:54
Last Modified: 22 Mar 2018 08:54
URI: http://ir.cftri.com/id/eprint/1990

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