Influences of duration and temperature of storage between hervest and treatment on the efficacy of 1-methylcyclopropene in 'Fuji' apple fruit
2010
Kashimura, Y., National Inst. of Fruit Tree Science, Tsukuba, Ibaraki (Japan) | Hayama, H. | Sakamoto, D.
Influences of duration and storage temperature between harvest and 1-methylcyclopropene (1-MCP) treatment on the storability of 'Fuji' apple (Malus pumila Mill.) fruit were investigated. Fruit were treated with 1 microL/L 1-MCP for 18 hours at 20degC on the day after harvest or at 8, 15 or 22 days after harvest (DAH), following storage at 2 or 20degC. Fruit were then stored at 2degC until 209 DAH. Titratable acidity decreased more rapidly at 20degC than at 2degC until treatment. Flesh firmness changed little at either 20 or 2degC. Until 22 DAH, internal ethylene concentration (IEC) at 2degC remained lower than the level at 8 DAH at 20degC because IEC rose more rapidly at 20degC than 2degC. When fruit were stored at 2degC from harvest until treatment, delaying treatment until 22 DAH had no influence on the efficacy of 1-MCP treatment. However, when fruit were stored at 20degC until treatment, suppression of ripening by 1-MCP treatment decreased with increases in treatment delay. The results indicated that 'Fuji' apple fruit should be placed in cold storage immediately after harvest until 1-MCP treatment in order to maintain fruit quality during long-term storage.
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