Repeated treatment of apple fruit with 1-methylcyclopropene (1-MCP) prior to controlled atmosphere storage
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- 作者：Jacqueline F. Nock ; jfn3@cornell.edu ; Christopher B. Watkins
- 关键词：Malus ; × ; ; domestica Borkh. ; Ethylene ; Firmness ; Storage ; Physiological disorders
- 刊名：Postharvest Biology and Technology
- 出版年：2013
- 出版时间：May, 2013
- 年：2013
- 卷：79
- 期：Complete
- 页码：73-79
- 全文大小：262 K
文摘
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 ¡Á 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¡¯.