Comparison of isopropanol and hexane for extraction of vitamin E and oryzanols from stabilized rice bran

The effects of solvent‐to‐bran ratio (2∶1 and 3∶1, w/w), extraction temperature (40 and 60°C), and time (5, 10, 15, 20, and 30 min) were studied for hexane and isopropanol extraction. Increasing the solvent‐to‐bran ratios and extraction temperature increased the amounts of crude oil, vitamin E and o...

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Veröffentlicht in:	Journal of the American Oil Chemists' Society 1996-12, Vol.73 (12), p.1653-1656
Hauptverfasser:	Hu, Weicheng, Wells, John Henry, Shin, Tai‐Sun, Godber, J. Samuel
Format:	Artikel
Sprache:	eng
Schlagworte:	aceites vegetales arroz Biological and medical sciences bran Extraction General pharmacology hexane huile vegetale isopropanol Medical sciences oryzanol Pharmacognosy. Homeopathy. Health food Pharmacology. Drug treatments plant oils rice rice bran oil riz salvado son vitamin E
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Zusammenfassung:	The effects of solvent‐to‐bran ratio (2∶1 and 3∶1, w/w), extraction temperature (40 and 60°C), and time (5, 10, 15, 20, and 30 min) were studied for hexane and isopropanol extraction. Increasing the solvent‐to‐bran ratios and extraction temperature increased the amounts of crude oil, vitamin E and oryzanol recovered for both solvents. An extraction time of 15 min was sufficient for optimum crude oil, vitamin E, and oryzanol extraction. Preheated isopropanol (3∶1 solvent/bran ratio and 60°C) extracted less crude oil (P
ISSN:	0003-021X 1558-9331
DOI:	10.1007/bf02517967