A rigorous kinetic model for β-carotene oxidation in the presence of an antioxidant, α-tocopherol
A rigorous kinetic model for β-carotene oxidation in the presence of an antioxidant, α-tocopherol
复制标题
抗氧化剂 α-生育酚存在下 β-胡萝卜素氧化的严格动力学模型
DOI：
10.1007/s11746-003-0849-z
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Yonemoto
中科院分区：
文献类型：
--
作者：
A. Takahashi;N. Shibasaki;T. Yonemoto
研究了β-胡萝卜素在不同浓度抗氧化剂α-生育酚存在下，在惰性溶剂正庚烷中的氧化反应。只要生育酚留在体系中，胡萝卜素的氧化进程就会受到抑制。建立了在抗氧化剂存在下胡萝卜素氧化反应的严格动力学模型，该模型不仅考虑了抗氧化剂的作用，还考虑了生育酚与胡萝卜素的共氧化和自由基交换反应。该模型定量描述了胡萝卜素在广泛的温度、氧组成和初始抗氧化剂浓度范围内的氧化行为。
Oxidation of β-carotene in an inert solvent, n-decane, in the presence of various concentrations of the antioxidant α-tocopherol was studied. The progress of carotene oxidation was suppressed as long as the tocopherol remained in the system. A rigorous kinetic model for carotene oxidation in the presence of an antioxidant was proposed based on a reaction mechanism in which not only the antioxidation but also the co-oxidation and radical-exchange reaction of tocopherol with carotene were incorporated. The model quantitatively described the oxidation behavior of carotene over a wide range of temperatures, oxygen compositions, and initial antioxidant concentrations.