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Isolation and antioxidant efficacy of nutraceutical concentrates from sesame and flax seed oils

Nasirullah, Dr. and Jeyarani, T. and Rakshitha, D. (2009) Isolation and antioxidant efficacy of nutraceutical concentrates from sesame and flax seed oils. Journal of Food Science and Technology, 46 (1). pp. 66-69.

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Abstract

Oils obtained from raw and roasted sesame (Sesamum indicum) and flaxseed (Linum usitatissimum), were used to isolate antioxidant/nutraceutical concentrates. Roasting showed no adverse effect on the fatty acid composition of these oils. Antioxidant concentrate of sesame oil showed absorbance at X.max 288-289 nm for sesamol. The presence of lignan molecules in all the concentrates was confirmed by FT-IR frequencies. Thin layer chromatography of ethanol extract of sesame seed oil (EESSO), ethanol extract of roasted sesame seed oil (EERSSO), ethanol extract of flaxseed oil (EEFSO) and ethanol extract of roasted flaxseed oil (EERFSO) revealed the presence of vanillic, cinnamic and hydroxy benzoic acids. Polyphenol content of residual sesame oil was 5.8% and of roasted flaxseed oil concentrate 9.1%. The sesamol content was maximum (22,931 ppm) in EERSSO. The concentrates EESSO, EERSSO, EEFSO and EERSFO at 200 and 500 ppm have been fortified to refined sunflower oil without tertiary butyl hydroquinone (TBHQ) to assess their antioxidant potential at ambient (25-28°C) and elevated temperature (37°C) for 12 weeks period. The free fatty acids and anisidine value for sunflower oil with TBHQ and sunflower oil with above concentrates were close to each other. Nutraceutical concentrate had the matching potential to protect sunflower oil from autoxidation as compared to TBHQ.

Item Type: Article
Uncontrolled Keywords: Sesame seeds, Flaxseeds, Nutraceutical concentrate, Natural antioxidants, Antioxidant
Subjects: 600 Technology > 08 Food technology > 19 Lipids-oils/fats
600 Technology > 08 Food technology > 18 Processed foods > 04 Functional foods
Divisions: Lipid Science and Traditional Foods
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 11 Mar 2009 09:46
Last Modified: 28 Dec 2011 10:07
URI: http://ir.cftri.com/id/eprint/8895

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