Optimization of Processing Conditions for Removal of Pigment and Wax from Corn Oil Using Response Surface Methodology
This study investigated the removal of pigment and wax from alkali-refined corn oil.The decolorization was carried out by adding 1.2％ activated clay and stirring for 0.5 h at 100 ℃,followed by dewaxing by allowing the crystal nucleus of activated clay to grow for 13 h after cooling down to 11 ℃ by stirring at 13 r/min.Purified corn oil with a yellowness value of 19 and a redness value of 2.1 containing 26.28 mg/kg wax was obtained after filtration.The purification process was simplified by retention of activated clay in the oil after decolorization without addition of diatomite filter aid during crystal growth for dewaxing.In addition,oil adsorption by diatomite was avoided,cutting down on the cost.
国家科技期刊平台
NSTL
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维普
