Lipidomics analysis unveils the dynamic alterations of lipid degradation in rice bran during storage
文献类型： 外文期刊
作者： Liu, Xuan 1 ; Wang, Weifei 2 ; Li, Zhong 1 ; Xu, Long 3 ; Lan, Dongming 1 ; Wang, Yonghua 1 ;
作者机构： 1.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510640, Peoples R China
2.Sericultural & Argi Food Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods, Guangdong Acad Agr Sci,Minist Agr & Rural Affairs, 133 Yiheng St,Dongguanzhuang Rd, Guangzhou 510610, Peoples R China
3.Henan Agr Univ, Coll Food Sci & Technol, Zhengzhou 450002, Peoples R China
4.Guangdong Youmei Inst Inteligent Biomfg Co Ltd, Foshan 528200, Guangdong, Peoples R China
关键词： Rice bran; Rice bran oil; Oxylipids; Oxidative rancidity; Volatile secondary oxidation products
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.1； 五年影响因子：7.7 ）
ISSN： 0963-9969
年卷期： 2024 年 184 卷
页码：
收录情况： SCI
摘要： Recent explorations into rice bran oil (RBO) have highlighted its potential, owing to an advantageous fatty acid profile in the context of health and nutrition. Despite this, the susceptibility of rice bran lipids to oxidative degradation during storage remains a critical concern. This study focuses on the evolution of lipid degradation in RBO during storage, examining the increase in free fatty acids (FFAs), the formation of oxylipids, and the generation of volatile secondary oxidation products. Our findings reveal a substantial rise in FFA levels, from 109.55 to 354.06 mg/g, after 14 days of storage, highlighting significant lipid deterioration. Notably, key oxylipids, including 9,10-EpOME, 12,13(9,10)-DiHOME, and 13-oxoODE, were identified, with a demonstrated positive correlation between total oxylipids and free polyunsaturated fatty acids (PUFAs), specifically linoleic acid (LA) and alpha-linolenic acid (ALA). Furthermore, the study provides a detailed analysis of primary volatile secondary oxidation products. The insights gained from this study not only sheds light on the underlying mechanisms of lipid rancidity in rice bran but also offers significant implications for extending the shelf life and preserving the nutritional quality of RBO, aligning with the increasing global interest in this high-quality oil.
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