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Insights into the potential mechanism of liquid nitrogen spray freezing's influence on volatile compounds in surimi gels with different cross-linking degrees: Focus on oxidation, protein structure, intermolecular force and free amino acid alterations

文献类型: 外文期刊

作者: Luo, Xiaoying 1 ; Huang, Kang 2 ; Yu, Yali 1 ; Yang, Qin 1 ; Yang, Huifang 1 ; Xiong, Shanbai 1 ; An, Yueqi 1 ; Hu, Yang 1 ;

作者机构: 1.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Hubei, Peoples R China

2.Univ Auckland, Sch Chem Sci, Auckland 1142, New Zealand

3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Hubei, Peoples R China

关键词: Surimi gels; LN spray freezing; Intermolecular forces; HS-GC-IMS; Free amino acids

期刊名称:FOOD CHEMISTRY ( 影响因子:8.8; 五年影响因子:8.6 )

ISSN: 0308-8146

年卷期: 2024 年 444 卷

页码:

收录情况: SCI

摘要: This study revealed the variations in odor characteristics and underlying mechanisms of different cross-linked surimi gels under liquid nitrogen (LN) spray freezing. The results demonstrated that LN spray freezing had an essential effect on the gels ' odor. The odor changes in the -80 degrees C LN spray freezing group were closer to the control group, while -35 degrees C LN spray freezing treatment had the greatest impact on the aroma quality of gels. Freezing reduced gels ' texture properties, intensified lipid and protein oxidation, altered protein conformation, increased surface hydrophobicity and hydrophobic interactions. These changes affected the gels' odor characteristics, leading to a reduction in fish aroma and an increase in fishy and oil odors after freezing. These tendencies were more pronounced at -35 degrees C LN spray freezing with lower cross-linking degrees, and reducing the freezing temperature to -80 degrees C and increasing the cross-linking degree to 62.99% mitigated the extent of deterioration in gel flavor quality.

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