食品科学2016，Vol.37Issue(14)：32-36,5.DOI:10.7506/spkx1002-6630-201614006
响应面试验优化油脂分段脱色工艺
Optimization of Stepwise Bleaching of Soybean Oil by Response Surface Methodology
摘要
Abstract
A stepwise procedure for bleaching soybean oil was developed on the basis of the principle that multiple adsorption equilibriums allow effective bleaching of soybean oil. The optimization of processing conditions was done using one-factor-at-a-time method and response surface methodology. To crude soybean oil, activated clay was added in three different portions until reaching the same final concentration. The best bleaching efficiency of soybean oil was obtained when activated clay was added to a final concentration of 1.27%with stirring at 150 r/min for 60 min at 100℃. Under these conditions, the acid value and peroxide value of soybean oil were up to 0.12 mg KOH/g and 3.26 mmol/kg, respectively. The yellowness and redness of the oil were respectively 18 and 1.45 as measured using a Lovibond tintometer. Compared with the conventional bleaching process, the new process used 9.29%less activated clay and simultaneously improved the refining efficiency.关键词
大豆油/活性白土/分段脱色/吸附平衡/脱色率Key words
soybean oil/activated clay/stepwise bleaching/adsorption equilibrium/bleaching efficiency分类
轻工业引用本文复制引用
魏贞伟,梁宝生,张青,任悦,刘欣,于殿宇,王俊国..响应面试验优化油脂分段脱色工艺[J].食品科学,2016,37(14):32-36,5.基金项目
粮油食品深加工吉林省高校重点实验室开放基金项目（高2016第001号）；吉林省教育厅科学研究计划基金项目 （）
