Determination of γ-Oryzanol in Rice Bran Oil Refinery Soap Stock
作者： Narumon Jeyashoke , Kanit Krisnangkura , Thapanee Choosuwan
DOI:
关键词: Ethyl acetate 、 Chromatography 、 Partition coefficient 、 Stock (geology) 、 Refinery 、 Solvent 、 Bran 、 Dry weight 、 Rice bran oil 、 Chemistry
摘要: The method of Seemanathan et al (J. Food Sci. Tech. 23: 270-273(1989)) for determination ofγ-oryzanol, in soap stock rice bran oil, is very tedious and time consuming. This would hinder theevaluation the extraction purification γ-oryzanol. Thus, a simple rapid methodof γ-oryzanol proposed. depends on theaccurate partition coefficient (K) either by two consecutive or parallelextractions. K concentration are then solved mathematically. By using ethyl acetate as solvent extraction, it found that contained 7.6% ofγ-oryzanol dry weight basis 2.9% wet basis. distributedbetween (pH 9.5) 4.11. Thus estimated about 80% theγ-oryzanol extracted into equal volume. Keywords : Oryzanol / Partition Coefficient Rice Bran Oil Soap Stock
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