KMID : 1007520200290030393
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Food Science and Biotechnology 2020 Volume.29 No. 3 p.393 ~ p.399
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Extraction of ¥ã-oryzanol from rice bran using diverse edible oils: enhancement in oxidative stability of oils
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Yi Bo-Ra
Kim Mi-Ja
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Abstract
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Diverse edible oils including perilla, corn, soybean, canola, sunflower, olive, and grape seed oils were mixed with heat-stabilized rice bran to extract ¥ã-oryzanol from the rice bran. The oxidative stabilities of the oils with or without extraction were compared by analyzing the headspace oxygen content, conjugated dienoic acid (CDA) values, and p-anisidine values (p-AV). Grape seed oil extracted significantly high ¥ã-oryzanol content while canola oil extracted lowest ¥ã-oryzanol content (p?0.05). All the solvent oils except corn oil possessed enhanced oxidative stability at 100 ¡ÆC after extracting ¥ã-oryzanol from stabilized rice bran, based on the results of the headspace oxygen depletion and CDA methods. However, all the recovered oils had high p-AV than vegetable oils. Especially, perilla oil had an exceptionally high p-AV, which may be due to its high linolenic acid content.
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KEYWORD
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Rice bran oil, ¥ã-Oryzanol, Diverse oils
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