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KMID : 0380619850170030175
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Korean Journal of Food Science and Technology
1985 Volume.17 No. 3 p.175 ~ p.179
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Comparison of Physicochemical Characteristics of Alkali Refined and Esterified Rice Bran Oils
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Abstract
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The alkali refined rice bran oil (ARBO) and the esterified rice bran oil (ERBO) with glycerol were analyzed for their physicochemical charateristics and the compositions. Specific gravity, refractive index and yellowness of ERBO was higher than ARBO but smoking point was 60-80℃ higher than ERBO. The free fatty acid content was 0.05% a ARBO and 0.88-1.36% ERBO. The wax was not detected in ARBO but the soft and hard waxes were detected in ERBO. The lipids were composed of 98-99% neutral lipid, 0.2-0.5% glycolipid and 0.1-0.5% of phospholipid in all samples. The triglyceride content of neutral lipid was 96.3% ARBO and 93.0-94.1% ERBO, and its monoglyceride content was 0.11 ARBO and 0.39-0.69% ERBO. The major fatty acid compsition of samples were 91-92% oleic, 36-40% linoleic and 17-18% of palmitic acid.
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KEYWORD
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