Characterization of key lipids for binding and generating aroma compounds in roasted mutton by UPLC-ESI-MS/MS and Orbitrap Exploris GC. (16th April 2022)

• Record Type: Journal Article
• Authors: Liu, Huan; Hui, Teng; Zheng, Xiaochun; Li, Shaobo; Wei, Xiangru; Li, Pi; Zhang, Dequan; Wang, Zhenyu
• Is Part Of: Food chemistry. Volume 374(2022)
• Publication Date: 2022-04-16
• Subjects: Roasted meat -- Lipidomics -- Aroma compounds -- Marker -- Triglyceride; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.131723
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: TG (16:0_18:1_18:1) was the predominant lipid for binding aroma compounds. PC and PE might be the crucial lipids in the formation of aroma compounds. Aldehydes and alcohols were the predominant aroma compounds in roasted mutton. PC (30: 6) and PC (28: 3) were potential markers in the roasted mutton. Abstract: Lipids are the key aroma formation substrates and retainers relevant to the flavor quality. The lipids in the roasted mutton were investigated by UPLC-ESI-MS/MS and Orbitrap Exploris GC. The results showed that a total of 2488 lipids from 24 subclasses were identified in the roasted mutton, including 28.21% triglyceride (TG), 14.87% phosphatidylcholine (PC), and 11.03% phosphatidylethanolamine (PE). TG (16:0_18:1_18:1) and TG (18:0_18:0_18:1) might be the predominant lipids for binding aroma compounds. 488 Differential lipids from 20 subclasses were observed based on VIP > 1 and p < 0.05. The 61 out of 488 differential lipids, especially PC and PE, might predominantly contribute to the formation of aroma compounds. A total of 13 aroma compounds were determined as the characteristic odorants in the roasted mutton, including hexanal, heptanal, and 1-octen-3-ol. PC (30: 6) and PC (28: 3) were the potential markers for the discrimination of roasted mutton.