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首页> 外文期刊>Journal of Food Science >Sources and mechanisms of carbon monoxide production by irradiation
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Sources and mechanisms of carbon monoxide production by irradiation

机译：辐射产生一氧化碳的来源和机理

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摘要

The sources and mechanisms of gas production by irradiation were determined using model systems prepared with fatty acid, phospholipids, oil, sugars, glycolysis and TCA cycle intermediates, nucleic acids, amino acid monomers and homopolymers, and proteins. The model systems were irradiated at 0, 2.5, 5, or 10 kGy using a linear accelerator and the amounts of CO, CO2, and CH4 produced were determined using gas chromatography. The productions of CO, CO2, and CH4 in all samples were irradiation-dose dependent. Glycine,asparagine, and glutamine were the major sources of CO production among amino acids, and glyceraldehydes, pyruvate, and alpha-ketoglutarate were the major sources of CO among glycolysis intermediates. Phosphatidyl choline, phosphatidyl ethanolamine, and lysophosphatidyl choline produced the greatest amounts of CO among the phospholipids. The major sources of CO2 production were pyruvate, threoine, and methionine, and those of CH, were methionine and acetone. The amounts of CO produced from these sources were significant, and the production of gas compounds via radiolytic degradation appears to be closely related to the structure of molecules.
机译：使用由脂肪酸，磷脂，油，糖，糖酵解和TCA循环中间体，核酸，氨基酸单体和均聚物以及蛋白质制备的模型系统，确定了通过辐照产生气体的来源和机理。使用线性加速器以0、2.5、5或10 kGy照射模型系统，并使用气相色谱法确定产生的CO，CO2和CH4的量。所有样品中CO，CO2和CH4的产生均与辐射剂量有关。甘氨酸，天冬酰胺和谷氨酰胺是氨基酸中CO产生的主要来源，甘油醛，丙酮酸和α-酮戊二酸是糖酵解中间体中主要的CO来源。在磷脂中，磷脂酰胆碱，磷脂酰乙醇胺和溶血磷脂酰胆碱产生的CO量最多。二氧化碳的主要来源是丙酮酸，苏氨酸和蛋氨酸，而甲烷的主要来源是蛋氨酸和丙酮。从这些来源产生的一氧化碳数量非常可观，并且通过辐射分解产生的气体化合物的产生似乎与分子的结构密切相关。

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