Recent progress in the thermal treatment of oilseeds and oil oxidative stability:A review  

作　　者：Zizhe Cai Keyao Li Wan Jun Lee Martin T J Reaney Ning Zhang Yong Wang 

机构地区：[1]Guangdong Saskatchewan Oilseed Joint Laboratory,Department of Food Science and Engineering,Jinan University,Guangzhou 510632,China [2]Department of Plant Sciences,University of Saskatchewan,51 Campus Dr.,Saskatoon,SK S7N 5A8,Canada

出　　处：《Fundamental Research》2021年第6期767-784,共18页自然科学基础研究（英文版）

基　　金：supported by the National Natural Science Founda-tion of China(Grants No.31920103012 and 31901603);China Postdoc-toral Science Foundation(Grant No.2019M663386);the Science and Technology Project of Guangzhou City(Grant No.201903010049).

摘　　要：Oxidative deterioration of vegetable oils is of great importance in the food industry.In China,vegetable oils produced via thermal pretreatment are popular owing to their strong oil flavor and enhanced yield.Here,we review:(i)the currently employed thermal treatment methods of oilseeds before oil extraction;(ii)effects of thermal treatments on the physicochemical properties,contents of minor lipid components,and oxidative stability of vegetable oils;and(iii)Maillard model systems that are related to oil and oilseed chemistry.Among the thermal pretreatment technologies,microwave and infrared radiations are promising,but these are not performed on the same large production scales as roasting.For most oilseeds,thermal treatments increase the yield of extracted oil and content of minor lipid compounds in the oil,such as polyphenols,tocopherols,and phytosterols.In addition,some Maillard reaction products(MRPs)generated by heating oilseeds have been extracted.The presence of both minor lipids and MRPs in the oil confers improved oxidative stability.However,the mechanism or relationship between thermal treatment and oxidative stability is yet to be clearly elucidated because vegetable oil oxidation is dependent on variables such as unsaturation,concentration and types of minor lipid components,MRPs,and the potential synergistic effects of these components.Recently,several Maillard reaction models related to thermally treated oilseeds have been established,suggesting that MRPs play a critical role during oxidation.However,comprehensive identification of antioxidants and the mechanism by which they inhibit oxidation are lacking.Future research can be performed to establish models that would help elucidate the antioxidative mechanisms of MRPs for more oilseeds.Using these models,it will be possible to predict the oil quality after processing,based on the presence of MRPs and oil chemistry.

关 键 词：Vegetable oil Thermal treatment Minor lipid components Oxidative stability Maillard reaction 

分 类 号：TS22[轻工技术与工程—粮食、油脂及植物蛋白工程]