Journal
FOOD CHEMISTRY
Volume 228, Issue -, Pages 497-505Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.02.045
Keywords
Longan (Dimocarpus longan Lour.) fruit; Pericarp browning; Disease development; Energy status; Active oxygen metabolism; Phomopsis longanae Chi; 2,4-Dinitrophenol (DNP); Adenosine triphosphate (ATP)
Funding
- National Natural Science Foundation of China [31671914, 31171776, 30671464, 30972070, 31201445, 31601801]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20123515120016, 20133515110014]
- Construction Projects of Top University at Fujian Agriculture and Forestry University of China [612014042]
- Science Fund for Distinguished Young Scholars at Fujian Agriculture and Forestry University of China [xjq201619]
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As compared with P. longanae-inoculated longans, DNP treatment for P. longanae-inoculated longans exhibited higher fruit disease index and pericarp browning index, lower ATP amount and energy charge level, lower activities of SOD, CAT and APX, lower amounts of AsA and GSH, lower levels of DPPH radical scavenging activity and reducing power, higher O-2(-center dot) generating rate and MDA amount. However, supply of ATP for P. longanae-inoculated longans showed the contrary effects. These results gave convincing evidence that DNP treatment for accelerating pericarp browning and disease development of harvested longans caused by P. longanae was due to decreases of energy production and ROS scavenging capacity, and increases of O-2(-center dot) accumulation and membrane lipid peroxidation. Whereas, supply of ATP for retarding pericarp browning and disease development of harvested longans caused by P. longanae was due to increases of energy production and ROS scavenging capacity, and reductions of O-2(-center dot) accumulation and membrane lipid peroxidation. (C) 2017 Elsevier Ltd. All rights reserved.
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