Yujie Shi , Jing Li , Longzhu Zhou , Junmin Zhang , Xiaohui Feng , Weihai Xing , Chaohua Tang , Yueyu Bai
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引用次数: 0
Abstract
Thermal oxidation of phospholipids and triglycerides is a major source of beef aroma compounds. In this study, phosphatidylcholine (PC) and triglyceride (TG) were isolated and purified from beef and added to defatted beef and raw beef. The composition of aroma compounds generated by thermal oxidation in three model systems were compared by flavoromics. The main aroma compounds produced by the thermal oxidation of PC were decanal, (E)-2-nonenal, (E)-2-undecenal, and (E,E)-2,4-decadienal, while the main aroma compounds produced by the thermal oxidation of TG were nonanal, (E)-2-undecenal, and decanal. Nonanal remains the main aroma compound produced by PC and TG in defatted beef. Octanal and nonanal were the major aroma compounds generated by thermal oxidation of raw beef samples spiked with PC and TG. Raw beef with added PC and TG had higher levels of sulfides and heterocycles after thermal oxidation compared to defatted beef with added lipids. The comparison of the aroma profiles in three thermo-oxidative models indicated that PC contributed more than TG to the key odor-active compounds in cooked beef. Additionally, the thermo-oxidative degradation of PC facilitated the formation of Maillard reaction products. However, the beef matrix may inhibit the formation of decanal and (E,E)-2,4-decadienal.
期刊介绍:
Current Research in Food Science is an international peer-reviewed journal dedicated to advancing the breadth of knowledge in the field of food science. It serves as a platform for publishing original research articles and short communications that encompass a wide array of topics, including food chemistry, physics, microbiology, nutrition, nutraceuticals, process and package engineering, materials science, food sustainability, and food security. By covering these diverse areas, the journal aims to provide a comprehensive source of the latest scientific findings and technological advancements that are shaping the future of the food industry. The journal's scope is designed to address the multidisciplinary nature of food science, reflecting its commitment to promoting innovation and ensuring the safety and quality of the food supply.