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Oryzanol content of Indian rice bran oil and its extraction from soap stock.

Seetharamaiah, G. S. and Prabhakar, J. V. (1986) Oryzanol content of Indian rice bran oil and its extraction from soap stock. Journal of Food Science and Technology, India, 23 (5). 270-273, 19 ref..

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Abstract

Oryzanol content of commercial rice bran oil was 1.34-1.95%, hexane extracted oil 1.12-1.38%, and chloroform:methanol (2:1) extracted oil 2.55-2.61%. The soap stock obtained by alkali refining of the oil contained 1.3-3.1% oryzanol. Optimum pH (levels tested 8.0-10.5) for extraction from soap stock was approx. 9.5. Diethyl ether was a better solvent than acetone. The oryzanol concn. could be upgraded by alumina column chromatography and recrystallization using methanol and methanol-acetone (2:1). The recrystallized material had an m.p. of 133-139 degree C and absorption maxima at 314, 290 and 230 nm in petroleum ether.

Item Type: Article
Uncontrolled Keywords: BRAN-; rice bran oils, oryzanol in; OILS-VEGETABLE; ANTIOXIDANTS-; RICE-; oryzanol in rice bran oils
Subjects: 600 Technology > 08 Food technology > 16 Nutritive value > 07 Waste utilization
600 Technology > 08 Food technology > 19 Lipids-oils/fats
600 Technology > 08 Food technology > 21 Cereals > 01 Rice
Divisions: Lipid Science and Traditional Foods
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 01 Feb 2021 04:35
Last Modified: 01 Feb 2021 04:35
URI: http://ir.cftri.com/id/eprint/6437

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