Repeated treatment of apple fruit with 1-methylcyclopropene (1-MCP) prior to controlled atmosphere storage |
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| Institution: | 1. Academic Group of Microbial Food Safety, DIPA, Chemistry Department, Autonomous University of Querétaro, Cerro de las Campanas s/n Col. las Campanas, 76010 Querétaro, Qro, Mexico;2. Food Technology Department, Lleida University, XaRTA-Postharvest, Agrotecnio Center, Av. Rovira Roure, 191, 25198 Lleida, Catalonia, Spain;3. IRTA, XaRTA-Postharvest, Rovira Roure 191, 25198 Lleida, Catalonia, Spain;1. Department of Plant Agriculture, University of Guelph, 50 Stone Rd E., Guelph, ON N1 G 2W1 Canada;2. Ontario Ministry of Agriculture and Food, Box 587, 1283 Blueline Rd. at Highway 3, Simcoe, Ontario N3Y 4N5 Canada;1. Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil;2. Federal Institute of Santa Catarina (IFSC), Campus Urupema, Knowledge Road, Center, Urupema, Santa Catarina, 88625-000 SC, Brazil;1. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China;2. Sericultural and Agri‐Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Food, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China;3. Department of Bioengineering, Jinan University, Guangzhou 510632, PR China |
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| Abstract: | The effect of multiple 1-MCP treatments prior to the establishment of controlled atmosphere (CA) storage on the quality of ‘McIntosh’ and ‘Empire’ apples Malus × sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.] was investigated. Fruit were harvested on three occasions over a 1 week period, and at each harvest cooled overnight and 1-MCP applied the following day. Fruit from the first or second harvests were treated again or for the first time when fruit from each successive harvest was treated. CA conditions were established after the last 1-MCP treatment and fruit were stored for up to 8 months. Delays in 1-MCP application generally resulted in progressively higher internal ethylene concentrations (IECs) at the time of treatment and lower firmness both at the time of treatment and after storage. Multiple 1-MCP applications kept IECs low and maintained firmness compared with single applications that were applied after 4 d. For ‘McIntosh’, external CO2 injury was more prevalent after storage if fruit were treated without delays after harvest for earlier harvests while later harvests were less affected. For ‘Empire’, flesh browning was more prevalent in fruit from later harvests and 1-MCP treated fruit had higher levels than untreated fruit. Either early 1-MCP treatment or multiple treatments reduced senescent breakdown in ‘McIntosh’, and core browning and greasiness in ‘Empire’. |
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