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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Model studies on the release of aroma compounds from structured and nonstructured oil systems using proton-transfer reaction mass spectrometry.
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Model studies on the release of aroma compounds from structured and nonstructured oil systems using proton-transfer reaction mass spectrometry.

机译:使用质子转移反应质谱从模型和非结构油系统中释放芳香化合物的模型研究。

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摘要

Relative retention, volatility, and temporal release of volatile compounds taken from aldehyde, ester, and alcohol chemical classes were studied at 70 degrees C in model systems using equilibrium static headspace analysis and real time dynamic headspace analysis. These systems were medium-chain triglycerides (MCT), sunflower oil, and two structured systems, i.e., water-in-oil emulsion and L2 phase (water-in-oil microemulsion). Hydrophilic domains of the emulsion type media retained specifically the hydrophilic compounds and alcohols. Four kinetic parameters characterizing the concentration- and time-dependent releases were extracted from the aroma release curves. Most of the kinetic parameter values were higher in structured systems than in oils particularly when using MCT. The oil nature was found to better control the dynamic release profiles than the system structures. The release parameters were well-related (i) to the volatile hydrophobicity as a function of the oil used and (ii) to the retention data in the specific case of the L2 phase due to a specific release behavior of alcohols.
机译:使用平衡静态顶空分析和实时动态顶空分析,在模型系统中于70摄氏度下研究了从醛类,酯类和醇类化学物质中提取的挥发性化合物的相对保留,挥发性和暂时释放。这些体系是中链甘油三酸酯(MCT),葵花籽油和两种结构体系,即油包水乳液和L2相(油包水微乳液)。乳液型介质的亲水域专门保留亲水性化合物和醇。从香气释放曲线中提取了表征浓度和时间依赖性释放的四个动力学参数。在结构化系统中,大多数动力学参数值都比在油中更高,尤其是在使用MCT时。发现油性比系统结构更好地控制动态释放曲线。由于醇的特定释放行为,释放参数与(i)作为所用油的函数的挥发性疏水性和(ii)在L2相特定情况下的保留数据密切相关。

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