摘要
以"大五星"枇杷为试验材料,采用50μmol/L硝普钠(SNP)溶液浸果处理20min,常温贮藏后,研究一氧化氮(NO)对果实贮藏期间膜脂过氧化作用和抗氧化酶活性的影响。结果表明:SNP处理明显提高了超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)活性,降低了脂氧含酶(LOX)活性和丙二醛(MDA)含量的积累,从而抑制了膜脂过氧化作用,保持膜的稳定性,延缓了果实的衰老进程。此外,SNP处理降低了贮藏期间果实中过氧化物酶(POD)和多酚氧化酶(PPO)活性。
Loquat（Eriobotryajaponica Lindl.cv.Dawuxing）fruits were taken as materials and dipped for 20 min in 50μmol/L sodium nitroprusside（SNP）,nitric oxide donor,then stored at ambient temperature.The effect of NO on membrane lipid peroxidation and antioxidant enzymes of loquat fruits were assayed during storage.The results showed that SNP treatment maintained higher activities of superoxide dismutase（SOD）,catalase（CAT）,and ascorbate peroxidase（APX）,decreased the activity of lipoxygenase（LOX）and the accumulation of malondialdehyde（MDA）content,therefore inhibited lipid peroxidation,kept the stability of cell membrane,which was facilitate to delay the senescence of loquat fruit during storage.In addition,SNP inhibited activities of peroxidase（POD）and polyphenol oxidase（PPO）.
出处
《北方园艺》
CAS
北大核心
2016年第3期121-124,共4页
Northern Horticulture
基金
国家自然科学基金资助项目(31360413)
贵州省留学人员科技活动资助项目[黔人项目(2013)7号]
