棕榈油干法分提条件研究

摘要

Palm oil midfraction(POMF)was prepared by dry fractionation using palm oil(IV:54) as raw material. By response surface methodology on the basis of single factor experiments,we studied the effects of crystallization temperature,cooling rate and crystallization time. The optimized conditions were as follows:crystallization temperature of 16.83℃,cooling rate of 1.31℃/h,and crystallization time of 13.39 h. Under this condition,the yield of POMF was 30.3%,the melting point was 35.0℃,and the melting point range was between 32℃and 36℃. The experiment results were as follows:the yield of POMF was 29.9%,the melting point was 35.3℃,and the melting point range was between 32℃and 36℃.%以碘价为54棕榈油为原料，采用干法分提制备棕榈油中间熔点物（POMF）。在单因素试验基础上，采用响应面优化实验，研究结晶温度、冷却速率和养晶时间对干法分提效果影响。得出棕榈油干法分提最佳工艺条件为：结晶温度16.83℃，冷却速率1.31℃/h，养晶时间13.39 h。在此条件下棕榈油中间熔点物（POMF）得率为30.3%，熔点为35.0℃，熔程为32℃~36℃。实验测定结果为：棕榈油中间熔点物（POMF）得率为29.9%，熔点为35.3℃，熔程为32℃~36℃。