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A method for bleaching rice bran oil with silica gel |
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| Authors: | A. G. Gopala Krishna |
| Affiliation: | (1) Department of Confectionery & Convenience Foods, C.F.T.R.I., 013 Mysore-570, India |
| Abstract: | The color of bleached rice bran oil can be improved by silica gel treatment of the oil miscella before or after dewaxing. A silica gel/oil/solvent ratio of 1:5:5 (wt/wt/vol) is suitable. Silica gel treatment can be carried out either by column percolation or by merely shaking the miscella with the gel followed by decantation. However, column percolation is more efficient, with 30–72% color reductionvs. 19–36% reduction for shaking and decanting. |
| Keywords: | Bleaching miscella decolorization oil color removal oil-miscella bleaching rice bran oil silica gel bleaching silica gel oil-miscella shaking silica gel percolation silica gel treatment |
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