摘要
研究了分子蒸馏法脱除玉米油中3-氯丙醇脂肪酸酯(3-MCPDE)和缩水甘油酯(GE)的效果。结果表明:蒸馏温度和进油速度是影响3-MCPDE脱除效果的显著因素;在进油速度160mL/h、刮膜速率240 r/min的条件下,玉米油中3-MCPDE的含量随着蒸馏温度的升高而降低,当蒸馏温度达到230℃时,玉米油中3-MCPDE的含量即可从2. 90 mg/kg降低到0. 82 mg/kg,脱除效率达到71. 7%;在蒸馏温度210℃、刮膜速率240 r/min的条件下,玉米油中3-MCPDE的含量随着进油速度的减缓而降低,3-MCPDE的脱除效率在15. 9%~60. 3%之间;在蒸馏温度210℃、进油速度160 mL/h的条件下,刮膜速率的改变对玉米油中3-MCPDE的含量影响不显著。在所有实验中,分子蒸馏可以使玉米油中的GE含量从4. 73 mg/kg均降至0. 5 mg/kg以下,脱除效率均超过91. 8%。
The removal effects of 3-monochloropropanel-1,2-diol fatty acid esters (3-MCPDE) and glycidyl esters (GE) from corn oil by molecular distillation were researched. The results showed that evaporation temperature and feed flow rate obviously influenced the removal efficiency of 3-MCPDE.The 3-MCPDE content decreased with the increase of evaporation temperature under the conditions of stirring speed 240 r/min and feed flow rate 160 mL/h. The content of 3-MCPDE reduced from 2. 90 mg/kg to 0. 82 mg/kg and the removal efficiency of 3-MCPDE reached 71. 7% when evaporation temperature was 230 ℃. The 3-MCPDE content decreased with the decrease of the feed flow rate under the conditions of evaporation temperature 210 ℃ and the stirring speed 240 r/min,and the removal efficiency of 3-MCPDE ranged from 15. 9% to 60. 3%. The stirring speed showed no significantly influence on the content of 3-MCPDE under the conditions of evaporation temperature 210 ℃ and feed flow rate 160 mL/h. The content of GE in corn oil after molecular distillation decreased from 4. 73 mg/kg to below 0. 5 mg/kg,and the removal efficiency exceeded 91. 8%.
作者
程倩
王风艳
苗木
周澍堃
王满意
彭许云
黄昭先
周胜利
于燕
惠菊
CHENG Qian;WANG Fengyan;MIAO Mu;ZHOU Shukun;WANG Manyi;PENG Xuyun;HUANG Zhaoxian;ZHOU Shengli;YU Yan;HUI Ju(Beijing Engineering Laboratory of Geriatric Nutrition Food Research, Beijing Key Laboratory of Nutrition & Health and Food Safety, COFCO Nutrition & Health Research Institute, Beijing 102209,China;COFCO - Oils R & D Center, Tianjin 300452,China;COFCO Eastocean Oils & Grains Industries (Zhangjiagang) Co., Ltd., Zhangjiagang 215634,Jiangsu,China)
出处
《中国油脂》
CAS
CSCD
北大核心
2019年第7期107-111,共5页
China Oils and Fats
基金
“十三五”国家重点研发计划资助项目(2016YF D0401405)
关键词
玉米油
3-氯丙醇脂肪酸酯
缩水甘油酯
分子蒸馏
脱除
corn oil
3-monochloropropanel-1,2-diol fatty acid esters
glycidyl esters
molecular distillation
removal
