Application of the weibull model to describe the kinetic behaviors of thiol decolorizers in chlorogenic acid-lysine solutions
Application of the weibull model to describe the kinetic behaviors of thiol decolorizers in chlorogenic acid-lysine solutions
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DOI：
10.1016/j.jfoodeng.2022.111287
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发表时间：
2022-09-22
影响因子：
5.5
通讯作者：
Pacioles, Criselda Toto
中科院分区：
文献类型：
--
作者：
Drucker, Charles Taylor;Senger, Lilian Were;Pacioles, Criselda Toto
巯基（半胱氨酸和谷胱甘肽）被探索作为潜在的脱色剂，以减轻绿色色素形成的绿原醌-赖氨酸溶液。通过对Weibull累积分布函数的重新参数化，描述了不同pH条件下绿化的时间依赖性。三参数模型的重复拟合（RMSE = 0.0111，CVRMSE = 1.55%）表明模型参数对硫醇浓度的线性依赖性。6参数威布尔模型结合时间和初始硫醇浓度（RMSE = 0.0255，CVRMSE = 3.56%）准确预测绿色颜色的发展。计算的模型参数描述的绿化率，终端绿化幅度，和滞后时间之前，绿化发病促进比较的相对有效性的每种硫醇的浓度。贝叶斯回归模型产生了几乎相似的预测能力（RMSE = 0.0272，CVRMSE = 3.80%）。谷氨酸在pH 8.0和9.0下均产生较长的滞后时间，但仅在pH 9.0下产生较少的绿色溶液。
Thiols (cysteine and glutathione) were explored as potential decolorization agents to mitigate green pigment formation in chlorogenic acid quinone-lysine solutions. Reparameterizations of the Weibull cumulative distri-bution function were applied to describe the time-dependence of greening under varying pH conditions. Repeated fitting of 3-parameter models (RMSE = 0.0111, CVRMSE = 1.55%) indicated the linear dependence of model parameters on thiol concentration. A 6-parameter Weibull model incorporating time and initial thiol concentration (RMSE = 0.0255, CVRMSE = 3.56%) accurately predicted green color development. Calculated model parameters descriptive of greening rate, terminal greening magnitude, and lag time before greening onset facilitated comparison of the relative effectiveness of each thiol based on concentration. Bayesian regression of the model yielded nearly similar predictive power (RMSE = 0.0272, CVRMSE = 3.80%). Glutathione yielded longer lag time durations at both pH 8.0 and 9.0 but yielded less green solutions only at pH 9.0.