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A new approach to prepare ω-3 and ω-6 fatty acid rich glycerides from vegetable oils for value added food products

Dr., Nasirullah and Sukumar, Debnath and Varsha, Bhargava (2009) A new approach to prepare ω-3 and ω-6 fatty acid rich glycerides from vegetable oils for value added food products. Journal of Food Science and Technology, 46 (4). pp. 374-376.

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Abstract

Triglycerides rich in ω-3 α-linolenic and ω-6 linoleic acids were isolated using silver nitrate (A), silver nitrate to zinc sulphate in 1:1 wt/wt ratio (B), and zinc sulphate (C) 15% each with respect to silica gel enrichment columns. Linseed, soybean and wheat germ oils were fractionated on column A, B and C separately using petroleum ether (60-80°C), petroleum ethendiethyl ether (1:1 v/v) and pure diethyl ether to yield I, II and III fractions, respectively. In the case of linseed oil, linoleic and α-linolenic acids enriched fraction increased significantly (p<0.05) from 17.1 to 47.2 and 52.2 to 90.3% from column A; 17.1 to 56.5 and 52.2 to 89.3% from column B; 17.1 to 20.2 and 52.2 to 67.1% from column C, respectively. Similar significant (p<0.05) enrichment trends were noticed for soybean and wheat germ oils also. Iodine value supported the data trend obtained by gas liquid chromatograms with respect to extent of unsaturation of these fractions. It has been demonstrated that silver nitrate (a highly expensive chemical) could be replaced by zinc sulphate without compromising the efficacy of enrichment columns. The efficacy of column (C) was almost equal to that of column (A).

Item Type: Article
Uncontrolled Keywords: Functional lipids, Silver nitrate, Zinc sulphate, Fatty acids, Iodine value
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 17 Fatty Acid Chemistry
600 Technology > 08 Food technology > 19 Lipids-oils/fats
Divisions: Lipid Science and Traditional Foods
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 26 Jun 2009 04:43
Last Modified: 28 Dec 2011 10:10
URI: http://ir.cftri.com/id/eprint/9117

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