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Structural phase transition-aligned preheating reprograms lipid-derived flavor formation in cooked meat: A case of
Le Xu1, Minghui Gu1, Yina Chen1
1Institute of Food Science and Technology, Chinese Academy of Agriculture Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Harvest, Storage, Transportation, Management and Control, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
Abstract:
Characteristic lipid-derived flavors in pre-prepared meat products are often diminished during reheating. This study examined how structural phase transition (SPT)-aligned preheating enhanced the generation of lipid-derived volatile compounds in cooked meat. Volatilomic analysis revealed that SPT-aligned preheating markedly reshaped the lipid-derived volatile profile of cooked Tan lamb meat, with SPT1-aligned preheating effectively enhancing the generation of hexanal, heptanal, 2-pentylfuran, octanal, 3-octanone, 1-octanol and 1-octen-3-ol. Quantitative lipidomics revealed that SPT1-aligned preheating accelerates the hydrolysis of phosphatidylcholine species containing polyunsaturated acyl chains, resulting in the accumulation of C18:2, C20:4, C22:4, C20:3, and C22:5, which are subsequently oxidized during heating to enhance lipid-derived flavor formation in cooked Tan lamb meat. Collectively, these findings illustrate a mechanistic pathway in which SPT1-aligned preheating induces phosphatidylcholine hydrolysis to enhanced generation of lipid-derived volatile compounds, providing a scientific basis for optimizing thermal interventions to improve lipid-derived volatile compounds in cooked meat.
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