Removal of 3-Monochloro-1,2-propanediol Esters and Glycidyl Esters from Corn Oil by Molecular Distillation

doi:10.7506/spkx1002-6630-20190822-234

FOOD SCIENCE ›› 2020, Vol. 41 ›› Issue (20): 41-45.doi: 10.7506/spkx1002-6630-20190822-234

• Food Chemistry • Previous Articles Next Articles

Removal of 3-Monochloro-1,2-propanediol Esters and Glycidyl Esters from Corn Oil by Molecular Distillation

HUANG Huina, LIU Yulan, YANG Zhengguang, WANG Jiandong, WANG Yuehua

(1. College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China;2. Hebei Yuxing Food Co. Ltd., Xingtai 055550, China;3. Shandong Sanxing Corn Industry Technology Co. Ltd., Zouping 256209, China)

Online:2020-10-25 Published:2020-10-23

Abstract

Abstract: 3-Monochloro-1,2-propanediol (3-MCPD) esters and glycidyl esters (GEs) were removed from corn oil by molecular distillation. The results showed that under the conditions of molecular distillation temperature of 220 ℃, scraping speed of 230 r/min and feeding speed of 50 drop/min, the removal rate of GEs was 85.0%, and its content was reduced from 5.909 to 0.885 mg/kg, which was lower than the EU maximum limit of 1 mg/kg of GE for edible oils. The removal rate of 3-MCPD ester was 79.3%, and its content was reduced from 2.686 to 0.556 mg/kg. After molecular distillation, the content of sterols and VE decreased by 38.2% (from 912.2 to 563.7 mg/100 g) and 28.6% (from 407.8 to 291.3 mg/100 g). These results show that molecular distillation can be used as an effective and reliable method for removing 3-MCPD esters and GEs from edible oils.

Key words: edible vegetable oils; molecular distillation; 3-monochloro-1,2-propanediol esters; glycidyl esters; removal rate

CLC Number:

TS222.1

HUANG Huina, LIU Yulan, YANG Zhengguang, WANG Jiandong, WANG Yuehua. Removal of 3-Monochloro-1,2-propanediol Esters and Glycidyl Esters from Corn Oil by Molecular Distillation[J]. FOOD SCIENCE, 2020, 41(20): 41-45.

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Removal of 3-Monochloro-1,2-propanediol Esters and Glycidyl Esters from Corn Oil by Molecular Distillation

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