Heusinger H
Institut für Radiochemie der Technischen Universität München, Garching, Federal Republic of Germany.
Z Lebensm Unters Forsch. 1987 Dec;185(6):447-56. doi: 10.1007/BF01042807.
The degradation products formed in aerated aqueous alpha-D-glucose solutions by cleavage of the carbon skeleton by ultrasound and gamma irradiation are compared. Common products present for both types of irradiation are: D-glyceraldehyde, D-glyceric acid, hydroxy-malondialdehyde, 2,3-dihydroxy-4-oxo-butanoic acid, tetrodialdose, D-arabinoic acid and D-xylose. 2,3,4-Trihydroxy-5-oxo-pentoic acid and D-arabinose could be detected only by radiolysis and evidence for the formation of 2-hydroxy-3-oxo-pentoic acid was only obtained in sonolysis. These fragmentation products are supposed to be formed by reactions of the glucose-peroxyl radicals with HO2-radicals. Based on the reactions of peroxyl radicals given in the literature, a mechanism is proposed which leads to the observed products.
比较了在充气的α-D-葡萄糖水溶液中，通过超声和γ辐射裂解碳骨架形成的降解产物。两种辐照方式产生的共同产物有：D-甘油醛、D-甘油酸、羟基丙二醛、2,3-二羟基-4-氧代丁酸、四氢二醛糖、D-阿拉伯糖酸和D-木糖。2,3,4-三羟基-5-氧代戊酸和D-阿拉伯糖只能通过辐射分解检测到，而2-羟基-3-氧代戊酸的形成证据仅在超声分解中获得。这些碎片产物被认为是由葡萄糖过氧自由基与HO2自由基反应形成的。基于文献中给出的过氧自由基反应，提出了一种导致观察到的产物的机制。
