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Studies on the antioxidant activities of natural vanilla extract and its constituent compounds through in vitro models.

Shyamala, B. N. and Naidu, M. Madhava and Sulochanamma, G. and Srinivas, P. (2007) Studies on the antioxidant activities of natural vanilla extract and its constituent compounds through in vitro models. Journal of agricultural and food chemistry, 55 (19). pp. 7738-43. ISSN 0021-8561

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Abstract

Vanilla extract was prepared by extraction of cured vanilla beans with aqueous ethyl alcohol (60%). The extract was profiled by HPLC, wherein major compounds, viz., vanillic acid, 4-hydroxybenzyl alcohol, 4-hydroxy-3-methoxybenzyl alcohol, 4-hydroxybenzaldehyde and vanillin, could be identified and separated. Extract and pure standard compounds were screened for antioxidant activity using beta-carotene-linoleate and DPPH in vitro model systems. At a concentration of 200 ppm, the extract showed 26% and 43% of antioxidant activity by beta-carotene-linoleate and DPPH methods, respectively, in comparison to corresponding values of 93% and 92% for BHA. Interestingly, 4-hydroxy-3-methoxybenzyl alcohol and 4-hydroxybenzyl alcohol exhibited antioxidant activity of 65% and 45% by beta-carotene-linoleate method and 90% and 50% by DPPH methods, respectively. In contrast, pure vanillin exhibited much lower antioxidant activity. The present study points toward the potential use of vanilla extract components as antioxidants for food preservation and in health supplements as nutraceuticals.

Item Type: Article
Uncontrolled Keywords: Vanilla; antioxidant; vanillin; 4-hydroxy-3-methoxybenzyl alcohol; nutraceutical
Subjects: 500 Natural Sciences and Mathematics > 10 Plants
600 Technology > 08 Food technology > 32 Antioxidants
Divisions: Plantation Products Spices and Flavour Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 07 Aug 2008 11:23
Last Modified: 30 Jun 2015 05:37
URI: http://ir.cftri.com/id/eprint/1842

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