外源乙烯胁迫对枇杷果实若干品质及PPO活性的影响

基金项目:

福建省财政专项-福建省农业科学院科技创新团队建设基金(No.STIF-Y05)

Effect of exogenous ethylene on quality and PPO activity of loquat fruit

1.
Agricultural Product Processing Research Centre, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China;
2.
Institute of Agricultural Engineering & Technology, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, China;
3.
Food Science College, Fujian Agriculture and Forest University, Fuzhou, Fujian 350002, China

摘要: 以"解放钟"枇杷(Eriobotrya japonica Lindl.cv.Jiefangzhong)果实为材料,研究浓度为10～20 mgL-1、50～60 mgL-1的外源乙烯胁迫对果肉硬度、可滴定酸(TA)、可溶性总糖(TS)等品质及多酚氧化酶(PPO)活性的影响。结果表明,50～60 mgL-1外源乙烯处理贮藏20d、40d的硬度分别仅增加11.0%和35.7%,而对照增加了29.9%和49.4%;外源乙烯胁迫抑制了糖和酸的消耗,处理组贮藏40 d的糖和可滴定酸均高于对照组;10～20 mgL-1外源乙烯处理在贮藏前期会激发PPO活性,而50～60 mgL-1外源乙烯则对PPO有抑制作用。
- 外源乙烯 /
- 枇杷 /
- 保鲜 /
- 硬度 /
- 品质 /
- PPO
Abstract: Effects of varying concentrations of exogenous ethylene stress on the flesh firmness、titratable acidity (TA)、total soluble sugars(TS) and polyphenol oxidase(PPO) activity of"Jiefangzhong"loquat were studied. The results showed that the flesh firmness increased 11%and 35.7%respectively after 20 d and 40 d storage with 50～60 mgL-1 of exogenous ethylene,but control group increased 29.9%and 49.4%;While,it could inhibit the consumption of TS and TA,which were better than control group after 40d storage;The activity of PPO could be excited with 10～20 mgL-1 exogenous ethylene in the early storage,but it was inhibited with 50～60 mgL-1.
- Exogenous ethylene /
- loquat fruit /
- storage /
- flesh firmness /
- polyphenol oxidase /

[1]	李维新,何志刚,林晓姿,等.低温贮藏对早钟六号枇杷采后生理与贮藏特性的影响[J].华南热带农业大学学报,2005,11(3):1-4.
[2]	刘孟臣,宋卫红,朱树华,等.一氧化氮和外源乙烯处理对肥城桃果实乙烯生物合成的影响[J].中国农业科学,2007,40(11):2582-2586.
[3]	胡花丽,梁丽松,王贵禧,等.外源乙烯对CA贮藏桃果实MDA含量、PPO和LOX活性变化的影响[J].西北林学院学报,2007,22(3):38-42.
[4]	蔡冲,龚明金,李鲜,等.枇杷果实采后质地的变化与调控[J].园艺学报,2006,33(4):731-736.
[5]	刘国强,吴锦程,唐朝晖,等.枇杷采后酚类物质代谢与果肉木质化的关系[J].中国农学通报,2008,12(1):247-251.
[6]	吴锦程,陈群,唐朝晖,等.外源水杨酸对冷藏枇杷果实木质化及相关酶活性的影响[J].农业工程学报,2006,22(7):175-179.