论文部分内容阅读
以砂糖橘、贡柑、红江橙和暗柳橙为试材,调查其田间日灼率和果实日灼后果皮抗氧化水平的变化。结果表明,不同品种田间日灼率不同;果实发生日灼后果皮组织中超氧阴离子自由基(O2-)大量积累,脂氧合酶(LOX)活性显著增强,脂质过氧化产物丙二醛(MDA)含量显著上升,加剧细胞膜脂过氧化。超氧化物歧化酶(SOD)活性、抗坏血酸(AsA)和谷胱甘肽(GSH)含量均显著下降,过氧化物酶(POD)和多酚氧化酶(PPO)活性均显著增强,说明其抗氧化代谢失调。
The effects of sunflower rate, anti-oxidative level of pericarp and peel of citrus fruit on orange peel, Gongmong, Hongjiang orange and dark orange were studied. The results showed that the sunburn rates were different in different varieties of field. After subletham burning, the accumulation of superoxide anion radical (O2-) and the activity of lipoxygenase (LOX) in the pericarp increased significantly. The malondialdehyde (MDA) MDA) increased significantly, aggravating cell membrane lipid peroxidation. The activities of superoxide dismutase (SOD), ascorbate (AsA) and glutathione (GSH) were significantly decreased and the activity of peroxidase (POD) and polyphenol oxidase (PPO) Oxidative disorders.