响应面法优化碱炼工艺脱除玉米油中玉米赤霉烯酮的研究

Optimization of alkali refining process for removal of zearalenone in corn oil by response surface method

摘要: 用碱炼工艺脱除玉米毛油中的玉米赤霉烯酮(Zearalenone，ZEN)可提高油脂的安全性。以玉米毛油为原料，通过单因素试验考察了碱液质量分数、超量碱用量和碱炼初温对ZEN脱除率的影响。在单因素试验的基础上，结合响应面Box-Behnken法，以ZEN脱除率为响应值进行碱炼工艺的优化。结果表明：当碱液质量分数6.53%、超量碱用量0.22%、碱炼初温39℃时，ZEN的脱除率为(99.15±0.08)%，该工艺条件能有效地脱除玉米油中的ZEN。

Abstract: The safety of corn oil can be improved by removing zearalenone (ZEN) from crude corn oil by alkali refining process. The effects of alkali mass fraction, excess alkali dosage and initial temperature of alkali refining on ZEN removal rate were investigated by single factor test with crude corn oil as raw material.On the basis of single factor experiments, the response surface Box-Behnken analysis method was adopted, which used ZEN removal rate as response value, to optimize the alkali refining process. The results showed that when the alkali mass fraction was 6.53%, the excess alkali content was 0.22%, and the initial temperature of alkali refining was 39 ℃, the removal rate of ZEN was (99.15±0.08)%. This optimized process could effectively remove ZEN from crude corn oil.