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动态控制气氛储存可抑制Galaxy苹果新陈代谢并提高采后三个成熟阶段挥发性物质浓度

来源: Fabio Rodrigo Thewes et al  发布日期: 2019-11-05  访问量: 17


本研究旨在探讨Galaxy苹果采后4种贮藏条件与3个成熟阶段(未成熟、成熟及过熟,以淀粉型态指数为基础)对采后代谢及挥发性物质浓度、9个月贮藏期及7天贮藏期的影在20℃下,储存条件为:【1】控制气氛(Ca)(1.2 kPaO2+2.0 kPaCO2);【2】Ca+1-甲基环丙烯(1-MCP)(0.625 ml L1);【3】基于呼吸商1.3(DCA-RQ 1.3)+1.2 kPaCO2和【4】DCA-RQ 1.5+1.2 kPaCO2的动态控制气氛。DCA-RQ 1.5贮藏水果提取液中总酯和特征香气挥发性物质含量较高在DCA-RQ 1.3和DCA-RQ 1.5贮藏的过熟果实中酯含量最高1-mcp的应用抑制了挥发性化合物的产生,不允许其随着成熟期的延长而增加,也不允许其主要酯在贮藏后减少。DCA-RQ抑制果实内源乙烯浓度、乙烯生成和呼吸速率,但DCA-RQ 1.5贮藏的果实低代谢并没有降低挥发性化合物的产生。...
标签: 动态气调、苹果采后、新城代谢、挥发性气体
 

Dynamic controlled atmosphere storage suppresses metabolism and enhances volatile concentrations of ‘Galaxy’ apple harvested at three maturity stages动态控制气氛储存可抑制Galaxy苹果新陈代谢并提高采后三个成熟阶段挥发性浓度

 


Fabio Rodrigo Thewesa,*, Auri Brackmanna, Rogerio de Oliveira Aneseb,
Eduarda Spagnol Bronzattoa, Erani Eliseu Schultza, Roger Wagnerc
a Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS,
Brazil
b Federal Institute of Santa Catarina (IFSC), Campus Urupema, Senadinho Road, Center, Urupema, Santa Catarina, 88625-000, SC, Brazil
c Department of Food Science and Technology, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil

A B S T R A C T
The objective of this study was to assess the interaction between four storage conditions and three maturity stages of ‘Galaxy’ apple at harvest (unripe, ripe and overripe, based on starch pattern index) on its metabolism and volatile concentrations after harvest and 9 months of storage plus 7 days of shelf life
at 20 C. Storage conditions were: [1] Controlled atmosphere (CA) (1.2 kPa O2 + 2.0 kPa CO2); [2] CA + 1-methylcyclopropene (1-MCP) (0.625 mL L1); [3] Dynamic controlled atmosphere based on respiratory quotient 1.3 (DCA-RQ 1.3) + 1.2 kPa CO2 and [4] DCA-RQ 1.5 + 1.2 kPa CO2. Fruit stored under DCA-RQ 1.5
had higher concentrations of total esters and characteristic aroma volatile compounds in extracted juice. Highest ester concentrations occurred in overripe fruit stored at DCA-RQ 1.3 and DCA-RQ 1.5. 1-MCP application suppressed volatile compound production, not allowing its increment with advanced of the maturity stage and reduced the main esters after storage. DCA-RQ suppressed internal ethylene concentration, ethylene production, and respiration rate, but the low metabolism in fruit stored under DCA-RQ 1.5 did not result in lower volatile compound production.

本研究旨在探讨Galaxy苹果采后4种贮藏条件与3个成熟阶段(未成熟、成熟及过熟,以淀粉型态指数为基础)对采后代谢及挥发性物质浓度、9个月贮藏期及7天贮藏期的影在20℃下,储存条件为:【1】控制气氛(Ca)(1.2 kPaO2+2.0 kPaCO2);【2】Ca+1-甲基环丙烯(1-MCP)(0.625 ml L1);【3】基于呼吸商1.3(DCA-RQ 1.3)+1.2 kPaCO2和【4】DCA-RQ 1.5+1.2 kPaCO2的动态控制气氛。DCA-RQ 1.5贮藏水果提取液中总酯和特征香气挥发性物质含量较高在DCA-RQ 1.3和DCA-RQ 1.5贮藏的过熟果实中酯含量最高1-mcp的应用抑制了挥发性化合物的产生,不允许其随着成熟期的延长而增加,也不允许其主要酯在贮藏后减少。DCA-RQ抑制果实内源乙烯浓度、乙烯生成和呼吸速率,但DCA-RQ 1.5贮藏的果实低代谢并没有降低挥发性化合物的产生。

Keywords: Malus domestica,Respiratory quotient ,Aroma, Anaerobic, metabolism, Ethylene ,Respiration rate

关键词:苹果、呼吸商、香气、无氧、代谢、乙烯、呼吸速率


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