›› 2017, Vol. 46 ›› Issue (01): 8-14.DOI: 10.3969/j.issn.1009-7791.2017.01.002

• Plant physiology, biochemistry and molecular biology • Previous Articles     Next Articles

Effects of SP-1 Wax Coating on Active Oxygen Metabolism of Pitaya Fruits

WANG Jun-ning,HUANG Yao-hao,DU Dong-dong,ZHONG Rong-bin   

  1. (1.College of Agronomy, Guangdong Ocean University, Zhanjiang 524088, Guangdong China; 2.Guangdong Agricultural Research and Development Center for Horticulture Technology, Zhanjiang 524088, Guangdong China)
  • Received:2017-01-17 Online:2017-03-30 Published:2017-03-30
  • Contact: WANG Jun-ning

SP-1果蜡处理对火龙果活性氧代谢的影响

王俊宁,黄耀豪,杜冬冬,钟荣彬   

  1. (1.广东海洋大学农学院,广东 湛江 524088;2.广东省现代农业(特色园艺)产业技术研发中心,广东 湛江 524088)
  • 通讯作者: 王俊宁
  • 作者简介:王俊宁,博士,副教授,从事园艺产品采后生理与分子生物学研究。

Abstract: Effects of SP-1 wax coating on weight loss rate and active oxygen metabolism were studied in white pitaya fruits. The results showed that SP-1 wax coating inhibited significantly the increase of weight loss and delayed the decline of TSS content, which was beneficial to fruit quality maintenance. Regarding active oxygen metabolism, SP-1 wax coating significantly inhibited the increase of LOX activity, the accumulation of H2O2 and the decrease of GSH content during 4 th—6th days of storage, and significantly reduced the production of O2-· and increased the content of reduced ASA during storage. The activities of SOD, CAT, APX and POD were slowed down and its shelf life was delayed by 2—4 days.

Key words: white pitaya fruit, SP-1wax, active oxygen metabolism

摘要: 以白肉火龙果Hylocereus undatus为材料,研究SP-1果蜡处理对果实失重率和活性氧代谢的影响。结果表明,SP-1果蜡处理极显著地抑制果实失重率增加,延缓总可溶性固形物(TSS)含量下降,有利于果实品质保持。在活性氧代谢方面,SP-1果蜡处理极显著地抑制火龙果果实中脂氧合酶 (LOX)活性、H2O2积累和贮藏第4~6天谷胱甘肽 (GSH)含量下降,极显著降低超氧阴离子自由基( O2-·)生成速率和提高贮藏期间还原型抗坏血酸(ASA)含量,维持较低的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)和过氧化物酶(POD)活性,延缓果实的成熟衰老进程,将货架期推迟2~4 d。

关键词: 白肉火龙果, SP-1果蜡, 活性氧代谢

CLC Number: