Effects of Endogenous Antioxidants in Camellia Oil on the Formation of 2-Monochloropropane-1, 3-diol Esters and 3-Monochloropropane-1,2-diol Esters during Thermal Processing

被引:2
|
作者
Liu, Shanshan [1 ]
Shen, Mingyue [1 ]
Xie, Jianhua [1 ]
Liu, Bohan [1 ]
Li, Chang [1 ]
机构
[1] Nanchang Univ, State Key Lab Food Sci & Resources, Nanchang 330047, Peoples R China
基金
中国国家自然科学基金;
关键词
MCPD esters; endogenous antioxidants; camellia oil; mechanism; FATTY-ACID ESTERS; EDIBLE OILS; ALPHA-TOCOPHEROL; GLYCIDYL ESTERS; VEGETABLE-OILS; 3-MCPD ESTERS; PALM OLEIN; REDUCTION; OXIDATION;
D O I
10.3390/foods13020261
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
2-Monochloropropane-1, 3-diol (2-MCPD) esters and 3-monochloropropane-1,2-diol (3-MCPD) esters, a class of substances potentially harmful to human health, are usually formed during the refining of vegetable oils under high temperature. The effects of endogenous antioxidants in vegetable oils on the formation of 2- and 3-MCPD esters is still unknown. In this study, the effects of endogenous antioxidants (alpha-tocopherol, stigmasterol and squalene) on the formation of 2- and 3-MCPD esters in model thermal processing of camellia oil were investigated. The possible formation mechanism of 2- and 3-MCPD esters was also studied through the monitoring of acyloxonium ions, the intermediate ions of 2- and 3-MCPD esters formation, and free radicals by employing infrared spectra and electron paramagnetic resonance (EPR), respectively. The results indicated that the addition of alpha-tocopherol had either promoting or inhibiting effects on the formation of 2- and 3-MCPD esters, depending on the amount added. Stigmasterol inhibited the formation of 3-MCPD ester and 2-MCPD ester at low concentrations, while promoting their formation at high concentrations. Squalene exhibited a promotional effect on the formation of 3-MCPD ester and 2-MCPD ester, with an increased promotion effect as the amount of squalene added increased. The EPR results suggested that CCl3 center dot, Lipid alkoxyl, N3 center dot and SO3 center dot formed during the processing of camellia oil, which may further mediate the formation of chlorpropanol esters. This study also inferred that squalene promotes the participation of the free radical in chlorpropanol ester formation.
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页数:12
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