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

Hu Weicheng | Zendy; Wells John Henry | Zendy; Shin TaiSun | Zendy; Godber J. Samuel | Zendy

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

Author(s) -

Hu Weicheng,

Wells John Henry,

Shin TaiSun,

Godber J. Samuel

Publication year - 1996

Publication title -

journal of the american oil chemists' society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.512

H-Index - 117

eISSN - 1558-9331

pISSN - 0003-021X

DOI - 10.1007/bf02517967

Subject(s) - hexane , rice bran oil , bran , solvent , extraction (chemistry) , chemistry , chromatography , vitamin e , vitamin , solvent extraction , organic chemistry , raw material , biochemistry , antioxidant

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 <.05) but more vitamin E ( P <.05) and similar amounts of oryzanol ( P >.05) relative to preheated hexane. The data suggest that isopropanol is a promising alternative solvent to hexane for extraction of oil from stabilized rice bran.

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