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Effect of Different Deacidification Methods on Phytonutrients Retention in Deacidified Fractionated Palm Oil.

Prasanth Kumar, P. K. and Gopala Krishna, A. G. (2015) Effect of Different Deacidification Methods on Phytonutrients Retention in Deacidified Fractionated Palm Oil. Journal of the American Oil Chemists' Society, 92 (5). pp. 645-658. ISSN 0003-021X

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Abstract

Crude red palm oil of 11.4 % free fatty acid content was dry fractionated to obtain liquid crude red palm olein which was deacidified using enzyme (lipase from Rhizomucor miehei), solvent (ethanol), and chemical (aqueous sodium hydroxide), and its effect on physicochemical characteristics and phytonutrients retention was evaluated. Enzymatic deacidification showed 100 % product yield and no neutral lipid loss, whereas yields of 78 and 62 % and neutral lipid loss of 12 and 30 % were observed for solvent and chemical deacidification, respectively. Variation in viscosity (25.3–37.2 cSt at 40 °C), slip melting point (15–36 °C), monoacylglycerols (1.7–3.3 %), and diacylglycerols (5.8–27.9 %) were also observed. Carotenoid content was slightly reduced by enzymatic (535 mg/kg), solvent (556 mg/kg), and chemical (526 mg/kg) deacidification. Retention of phytonutrients such as phytosterols (1,235 mg/kg), total tocopherols (965 mg/kg), squalene (301 mg/kg), coenzyme Q10 (25.9 mg/kg), and total phenolics (3 mg/kg) was highest following enzymatic deacidification. The IC50 value of the enzymatic deacidified sample (21.8 mg/ml) indicates more radical scavenging activity than in samples obtained using solvent (42.0 mg/ml) and chemical (28.8 mg/ml) methods.

Item Type: Article
Uncontrolled Keywords: Phytonutrients retained red palm olein · Enzyme deacidified red palm olein · Radical scavenging activity · Peroxide value
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 16 Enzyme 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: 16 Jun 2015 10:29
Last Modified: 05 Oct 2018 06:45
URI: http://ir.cftri.com/id/eprint/11822

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