绿原酸
风味
化学
食品科学
质谱法
偏最小二乘回归
色谱法
感官分析
感官的
数学
统计
作者
Hao Lin,Edisson Tello,Christopher T. Simons,Devin G. Peterson
出处
期刊:Food Chemistry
[Elsevier]
日期:2022-11-01
卷期号:395: 133555-133555
被引量:1
标识
DOI:10.1016/j.foodchem.2022.133555
摘要
Flavor instability of ready-to-drink (RTD) coffee during storage negatively impacts product quality. Untargeted liquid chromatography/mass spectrometry (LC/MS) analysis was applied to identify chemical compounds that degraded during storage and impacted the flavor attributes of RTD coffee. LC/MS chemical profiles of non-aged and aged coffee samples were modeled against the degree of difference sensory scores by orthogonal partial least squares with good fit (R2Y = 0.966) and predictive ability (Q2 = 0.960). The top five predictive chemical features were subsequently purified by off-line multidimensional Prep-LC, revealing ten coeluting chlorogenic acid lactones (CGLs) compounds that were identified by LC/MS and nuclear magnetic resonance (NMR). The concentrations of eight CGLs significantly decreased in the coffee during the 4-month storage. Sensory recombination testing revealed the degradation of 3-O-caffeoyl-ɣ-quinide and 4-O-caffeoyl-ɣ-quinide significantly impacted the flavor stability of RTD coffee at subthreshold concentrations.
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