Effects of dynamic controlled atmosphere by respiratory quotient on some quality parameters and volatile profile of 'Royal Gala' apple after long-term storage
Effects of dynamic controlled atmosphere by respiratory quotient on some quality parameters and volatile profile of 'Royal Gala' apple after long-term storage
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DOI：
10.1016/j.foodchem.2016.08.009
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发表时间：
2017-01-15
期刊：
影响因子：
8.8
通讯作者：
Wagner, Roger
中科院分区：
文献类型：
--
作者：
Both, Vanderlei;Thewes, Fabio Rodrigo;Wagner, Roger
研究了基于叶绿素荧光(DCA-CF)和呼吸商(DCA-RQ)的动态气调(DCA)贮藏对‘皇家嘎拉’苹果品质和挥发性物质的影响。DCA贮藏降低了1.0℃贮藏9个月和20℃贮藏7天的ACC(1-氨基环丙烷-1-羧酸)氧化酶活性、乙烯生成量和呼吸强度，从而提高了果肉硬度、可滴定的酸度和较少的生理障碍，并提供了更高比例的健康水果。与DCA-CF贮藏相比，常规气调贮藏的果实中关键挥发物(乙酸丁酯、乙酸异丁酯和乙酸己酯)含量较高，但在DCA-RQ1.5和RQ 2.0条件下贮藏的水果也表现出更高的关键挥发性化合物含量，乙醇和乙酸乙酯的含量增加，但远低于气味阈值。在DCA-CF中的储存减少了果酯的产生，特别是2-甲基丁酸乙酯，这是‘Royal Gala’苹果风味中最重要的成分。(C)2016爱思唯尔有限公司。保留所有权利。
The effects of dynamic controlled atmosphere (DCA) storage based on chlorophyll fluorescence (DCA-CF) and respiratory quotient (DCA-RQ) on the quality and volatile profile of 'Royal Gala' apple were evaluated. DCA storage reduces ACC (1-aminocyclopropane-1-carboxylate) oxidase activity, ethylene production and respiration rate of apples stored for 9 months at 1.0 degrees C plus 7 days at 20 degrees C, resulting in higher flesh firmness, titratable acidity and lesser physiological disorders, and provided a higher proportion of healthy fruit. Storage in a regular controlled atmosphere gave higher levels of key volatiles (butyl acetate, 2-methylbutyl acetate and hexyl acetate), as compared to fruit stored under DCA-CF, but fruit stored under DCA-RQ1.5 and RQ 2.0 also showed higher amounts of key volatile compounds, with increment in ethanol and ethyl acetate, but far below the odour threshold. Storage in DCA-CF reduces fruit ester production, especially 2-methylbutyl acetate, which is the most important component of 'Royal Gala' apple flavour. (C) 2016 Elsevier Ltd. All rights reserved.