食品科学 ›› 2010, Vol. 31 ›› Issue (4): 272-275.doi: 10.7506/spkx1002-6300-201004065

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采后正己醇处理对草莓果实活性氧代谢和衰老的影响

李英华1,袁海英2,*,张 辉1,王 磊1,胡秀兰2   

  1. 1.新疆农业大学食品科学学院 2.新疆农业大学园艺学院
  • 收稿日期:2009-02-04 修回日期:2009-09-21 出版日期:2010-02-15 发布日期:2010-12-29
  • 通讯作者: 袁海英 E-mail:haiyingyuan@126.com
  • 基金资助:

    新疆农业大学校长基金项目(2006-11)

Effect of Postharvest 1-Hexanol Treatment on Active Oxygen Metabolism and Senescence of Strawberry Fruits

LI Ying-hua1,YUAN Hai-ying2,*,ZHANG Hui1,WANG Lei1,HU Xiu-lan2   

  1. 1. College of Food Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2009-02-04 Revised:2009-09-21 Online:2010-02-15 Published:2010-12-29
  • Contact: YUAN Hai-ying E-mail:haiyingyuan@126.com

摘要:

以0.05% 和0.1% 正己醇对“达赛莱克特”草莓果实进行处理,对果实在4℃贮藏过程中超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)活性变化、超氧阴离子自由基产生速率、过氧化氢积累、VC 含量和呼吸强度进行研究。结果表明:0.05% 和0.1% 正己醇处理可降低果实的呼吸速率,显著地保持果实中较高的SOD、CAT 和APX 活性及较高的VC 含量,同时降低了超氧阴离子自由基(O2·)产生速率和H2O2 的积累,延缓了草莓果实的衰老进程。综合分析认为,0.05% 正己醇处理效果优于0.1% 正己醇处理。

关键词: 草莓, 正己醇, 活性氧, 果实衰老

Abstract:

Postharvest strawberry (Fragaria ananassa Duch cv. Darselect) fruits were treated with 0.05% or 0.1% and the changes of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activities, superoxide (O2·) production rate, hydrogen peroxide (H2O2) accumulation, VC content and respiration rate in treated fruits were investigated during storage at 4 ℃. Results indicated that both 0.05% and 0.1% 1-hexanol treatments significantly inhibited the respiration rate of strawberry fruits, maintained high levels of SOD, CAT, APX activities and VC content, reduced the production rate of O2· and the accumulation of H2O2, and thus the fruit senescence was delayed. Comprehensive evaluation demonstrates obvious superiority of 0.05% 1-hexanol treatment over 0.1% 1-hexanol treatment.

Key words: strawberry, 1-hexanol, active oxygen species, fruit senescence

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