食品科学

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采后二苯胺处理减轻夏橙果实油胞病的作用

刘丽丹,吴日章,曾凯芳   

  1. 1.西南大学食品科学学院,重庆 400715;2.贵州省铜仁市农业产业化办公室,贵州 铜仁 554300;
    3.农业部农产品贮藏保鲜质量安全风险评估实验室(重庆),重庆 400715
  • 出版日期:2013-12-25 发布日期:2014-01-03

Efficacy of Postharvest Diphenylamine Treatment on Reducing Oleocellosis in Valencia Orange Fruits

LIU Li-dan,WU Ri-zhang,ZENG Kai-fang   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;2. The Industrialization of Agriculture Office in Tongren, Tongren 554300, China;3. Laboratory of Quality and Safety Risk Assessment for Agro-products on Storage and Presevation (Chongqing), Ministry of Agriculture, Chongqing 400715, China
  • Online:2013-12-25 Published:2014-01-03

摘要:

研究通过二苯胺处理减轻夏橙果实油胞病的效果及其机制。结果表明:7mmol/L二苯胺处理对夏橙果实油胞病的控制具有显著效果,二苯胺处理提高了夏橙果实中相关抗氧化酶如超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)、抗坏血酸酶(APX)和谷胱甘肽还原酶(GR)的活性和抗氧化物质的含量。另外,二苯胺处理后的果实在贮藏后期多酚氧化酶(PPO)活性显著低于对照果实。因此,二苯胺处理可通过调节丙二醛(MDA)水平、抗氧化相关酶活性以及PPO活性来减轻夏橙果实的油胞病症状。

关键词: 夏橙, 油胞病, 二苯胺, 抗氧化

Abstract:

Our goal in this study was to evaluate the efficacy of diphenylamine (DPA) treatment on reducing oleocellosis
in Valencia orange fruits (Citrus sinensis L. Osbeck) and its mechanism. The results showed that 7 mmol/L DPA treatment
was significantly effective to control oleocellosis in Valencia orange fruits, which could enhance the activities of antioxidant
enzymes including superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), ascorbate peroxidase (APX) and
glutathione reductase (GR) and the contents of antioxidant compounds. In addition, there was a decline in polyphenoloxidase
(PPO) activity in DPA-treated fruits during the later period of storage. These results indicated DPA treatment could alleviate the
symptoms of oleocellosis in Valencia orange fruits by regulating malondialdehyde (MDA) level and antioxidant enzyme activity.

Key words: Valencia orange fruit, oleocellosis, diphenylamine, antioxidant