Studies on the Antioxidant Activity of Pomegranate (Punica granatum) Peel and Seed Extracts Using in Vitro Models

Singh, R. P. and Chidambara Murthy, K. N. and Jayaprakasha, G. K. (2002) Studies on the Antioxidant Activity of Pomegranate (Punica granatum) Peel and Seed Extracts Using in Vitro Models. Journal of Agricultural and Food Chemistry, 50 (1). pp. 81-86.

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Abstract

<p align="justify">Antioxidant-rich fractions were extracted from pomegranate ( Punica granatum) peels and seeds using ethyl acetate, methanol, and water. The extracts were screened for their potential as antioxidants using various in vitro models, such as ‚-carotene-linoleate and 1,1-diphenyl-2-picryl hydrazyl (DPPH) model systems. The methanol extract of peels showed 83 and 81% antioxidant activity at 50 ppm using the ‚-carotene-linoleate and DPPH model systems, respectively. Similarly, the methanol extract of seeds showed 22.6 and 23.2% antioxidant activity at 100 ppm using the ‚-carotene-linoleate and DPPH model systems, respectively. As the methanol extract of pomegranate peel showed the highest antioxidant activity among all of the extracts, it was selected for testing of its effect on lipid peroxidation, hydroxyl radical scavenging activity, and human low-density lipoprotein (LDL) oxidation. The methanol extract showed 56, 58, and 93.7% inhibition using the thiobarbituric acid method, hydroxyl radical scavenging activity, and LDL oxidation, respectively, at 100 ppm. This is the first report on the antioxidant properties of the extracts from pomegranate peel and seeds. Owing to this property, the studies can be further extended to exploit them for their possible application for the preservation of food products as well as their use as health supplements and neutraceuticals.</p>

Item Type:	Article
Uncontrolled Keywords:	Punica granatum antioxidant activity carotene-linoleate model system DPPH LDL free radicals
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:	12 Dec 2005
Last Modified:	28 Dec 2011 09:25
URI:	http://ir.cftri.res.in/id/eprint/254

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