Optimization of zearalenone removal from corn oil by hexadecyl dimethyl benzyl ammonium chloride modified montmorillonite using response surface methodology
In order to improve the removal efficiency of zearalenone(ZEN)from corn oil by hexadecyl dimethyl benzyl ammonium chloride modified montmorillonite(1627-MMT),on the basis of comparing the removal effects of different modified montmorillonites on ZEN in corn oil,using the removal rate of ZEN as index,the process conditions(1627-MMT dosage,adsorption time and adsorption temperature)of removing ZEN from corn oil by 1627-MMT were optimized by single factor experiment and response surface methodology,and the physicochemical properties of corn oil,contents of total sterol and total tocopherol before and after detoxification were determined.The results showed that compared with the other three modified montmorillonites,1627-MMT showed the best ZEN removal effect,and the optimal ZEN removal conditions were obtained as follows:1627-MMT dosage 5％,adsorption temperature 105 ℃,and adsorption time 23 min.Under the optimal conditions,the removal rate of ZEN was(89.16±0.10)％,and ZEN content in corn oil after detoxification was 349.64 μg/kg,meeting the EU standard limit requirements(≤400 μg/kg).After adsorption,the red value of corn oil decreased by 72.34％,the acid value decreased by 41.67％,the peroxide value decreased by 42.00％,the retention rates of total sterol and total tocopherol were 92.07％and 85.34％,respectively,and there was no significant change in the fatty acid composition and content.In conclusion,1627-MMT can not only effectively remove ZEN from corn oil,but also reduce the acid value,peroxide value and color of corn oil,and have little impact on the contents of sterol and tocopherol and fatty acid composition in corn oil,which has certain application potential in the removal of ZEN from corn oil.
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万方数据
维普
