Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», Lobachevskogo Street 2/31, Kazan, Russia.
Kazan Federal University, Institute of Fundamental Medicine and Biology, OpenLab Omics Technology, Kremlyovskaya Street 18, Kazan, Russia.
Food Chem. 2022 Dec 1;396:133665. doi: 10.1016/j.foodchem.2022.133665. Epub 2022 Jul 20.
This article presents data on electron paramagnetic resonance (EPR) and mass spectrometric analysis of potato tubers, irradiated with gamma rays, in order to examine and identify changes in the molecular composition of organic matter following radiation exposure. The products of the Maillard reaction were compared with the products of intramolecular radiolysis of organic constituents of potatoes. The presence of free radicals was verified using EPR. DDPM (2,3-dihydro-3,5-dihydroxy-6-methyl-4 (H) -pyran-4-one) was among the radiolysis products detected via mass spectrometry, which points to the intramolecular dehydration of potato carbohydrates. EPR signals indicate single-electron transitions of the semidione radical anionic molecular compounds. It has been shown that irradiation with gamma rays significantly destroys the carbohydrate, lipid, keto-carotene and amino acid molecules of potatoes.
本文介绍了用电子顺磁共振（EPR）和质谱分析γ射线辐照的土豆块茎的实验数据，以研究和鉴定辐射暴露后有机物质分子组成的变化。比较了美拉德反应产物与土豆有机成分的分子内放射分解产物。使用 EPR 验证了自由基的存在。质谱检测到的辐解产物中有一种 2,3-二氢-3,5-二羟基-6-甲基-4（H）-吡喃-4-酮（DDPM），这表明土豆碳水化合物发生了分子内脱水。EPR 信号表明半二酮自由基阴离子分子化合物的单电子跃迁。研究表明，γ射线辐照会显著破坏土豆的碳水化合物、脂类、酮类胡萝卜素和氨基酸分子。
