碱炼脱酸对花生油中16种多环芳烃脱除效果的研究  

Research on the Influence of Alkali Refining on16 Polycyclic Aromatic Hydrocabons in Peanut Oil

作　　者：刘玉兰[1] 石龙凯 胡爱鹏[1] 

机构地区：[1]河南工业大学粮油食品学院,郑州450001

出　　处：《中国粮油学报》2016年第2期75-80,共6页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金(31271884);河南省食用油脂倍增计划(豫财贸[2010]169号);河南省科技攻关(152102210262)

摘　　要：研究了碱炼脱酸过程及碱炼脱酸条件对花生油中多环芳烃脱除效果的影响。结果表明:碱炼脱酸对花生油中多环芳烃有一定的脱除作用,在综合考虑适当减少烧碱用量和油脂碱炼损耗的条件下,采用碱液质量分数5.11%、超碱量0.2%、碱炼温度70℃、碱炼时间40 min的优化碱炼脱酸条件,花生油中BaP、HPAHs、PAH4、LPAHs及PAH16的脱除率分别达到85.07%、48.13%、43.21%、56.75%及54.97%。经碱炼脱酸后花生油中B印含量从24μg/kg降至符合GB 2716中≤10μg/kg的限量指标,接近欧盟≤2μg/kg的限量指标,但PAH4含量达不到欧盟≤10μg/kg的限量指标,其他多环芳烃组分的残留量仍很高。因此,碱炼脱酸对于多环芳烃含量较高油脂的脱除作用是有限的。In this paper, the influences of alkali refining process and alkali refining conditions on PAH content were studied. The results showed that the alkali refining had a certain influence on the removal of PAHs. Considering the mount of alkali used and the loss of oil, the optimal conditions were ： alkali concentration was 5.11% , ultra - alkali was 0.2%, refining temperature was 70 ℃, refining time was 40 min. Under the best experimental condi- tions, the removal rate of Bap, HPAHs. PAH4. LPAHs and PAH16 were 85. 07% , 48. 13% , 43. 21% ,56.75% and 54.97%. The concentration of Bap was conformed to the limited standard of GB 2716-2005 （ ≤ 10 μg/kg）, but was not meet the criteria of EU （ ≤2 μg/kg）. The concentration of PAH4 was exceed the limit standard of EU （ ≤ 10 μg/kg） and the residual concentrations of other PAH components were higher too. In con- clusion, alkali refining was a good method for oils with lower exceeding standard rate of Bap, due to it had a limited effect on the removal of high concentration of PAHs.

关 键 词：花生油 碱炼 多环芳烃 脱除率 

分 类 号：TQ646[化学工程—精细化工]