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| Effects of crude corn oil acid value and alkali deacidification process on the composition of glycerides, 3-chloropropanol ester and glycidyl ester |
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| DOI：10.12166/j.zgyz.1003-7969/2020.02.016 |
| KeyWord:corn oil alkali deacidification monoglyceride diacylglycerol 3-chloropropanol ester glycidyl ester vitamin E phytosterol |
| FundProject:“十三五”国家重点研发计划子课题（2016YFD0401405） |
| Author Name | Affiliation | | LIU Yulan
ZHANG Jiafeng
HU Wenna
WANG Yuehua
WANG Jiandong | 1.College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
2.Shandong Sanxing Corn Industry Technology Co., Ltd., Zouping 256209, Shandong, China；
3.Hebei Yuxing Food Co., Ltd., Ningjin 055550, Hebei, China |
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| Abstract: |
| Alkali deacidification of corn oil with different acid values were conduced，and the contents of monoglyceride, diacylglycerol, 3-chloropropanol ester, glycidyl ester, vitamin E, and phytosterol were detected to analyze the effect of crude corn oil acid value and alkali deacidification process on the composition of glycerides, 3-chloropropanol ester and glycidyl ester. The results showed that with the acid value of crude corn oil increasing, the contents of monoglyceride and diacylglycerol increased significantly while the content of triglyceride reduced markedly. When the acid values of the crude oil was 3.06-870 mgKOH/g, the total amount of monoglyceride and diacylglycerol was 6.39%-17.40%, the contents of triglyceride, 3-chloropropanol ester and glycidyl ester were 82.60%-93.61%, 2.09-3.23 mg/kg and 0.40-0.51 mg/kg, respectively. After the alkali deacidification of crude oil with acid values of 410, 8.70 mgKOH/g, the contents of monogly ceride and diacylglycerol decreased by 3.34 percentage points and 4.47 percentage points respectively, and the content of 3-chloropropanol ester decreased significantly, but the content of glycidyl ester did not change much, indicating that the alkali deacidification process had a certain removal effect on the 3-chloropropanol ester, while it had little effect on the reduction of monoglyceride and diacylglycerol contents, so did glycidyl ester. In addition, the alkali deacidification process caused loss of nutrients, and the loss rates of vitamin E and phytosterol were 21.68%-24.53% and 3267%-39.99% respectively. |
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