Abstract The effects of controlled atmosphere (CA) and dynamic controlled atmosphere based on chlorophyll fluorescence (DCA-CF) and respiratory quotient (DCA-RQ; RQ = 1.3 and 1.5) on the metabolism, decay incidence, concentration and chemical composition of ‘Cripps Pink’ apple peel wax after 8 months of storage plus shelf life at 20 °C were studied. DCA-RQ1.3 stored fruit had the lowest respiration rate, evidencing low metabolism, corroborating with the highest number of healthy fruit and consequently being the best storage condition. The mean wax concentration found 21.23 g m−2, although it was lower for the DCA-RQ1.5 condition after 7 d. There was increase in wax concentration for DCA treatments from 7 to 14 d of shelf life. Chromatographic analysis allowed the identification of palmitic, stearic, oleic and linoleic fatty acids, with an increase in cis-11,14-eicosadienoic acid in all treatments and in palmitic acid in CA at 14 d. Triterpenoids, such as ursolic acid and oleanolic acids, were higher in CA, while alcohols such as 10-nonacosanol was higher in both DCA-RQ treatments. All treatments had high concentrations of nonacosane and tetracosanal. DCA-RQ decrease the incidence of greasiness. The supposed induction of anaerobic metabolism by extremely low oxygen levels and consequently higher concentration of ethanol, which were monitored by the two levels of RQ, induced the formation of compounds that may favor some mechanisms of adaptation against the low oxygen partial pressure (pO2).

中文翻译：

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动态可控气氛：长期储存后对'Cripps Pink'苹果表皮蜡化学成分的影响

摘要 受控气氛 (CA) 和基于叶绿素荧光 (DCA-CF) 和呼吸商 (DCA-RQ; RQ = 1.3 和 1.5) 的动态受控气氛对 'Cripps 的代谢、衰变发生率、浓度和化学成分的影响研究了粉红色苹果皮蜡在 8 个月的储存和 20 °C 下的保质期后。DCA-RQ1.3 储藏的水果呼吸率最低，表明新陈代谢低，证实了健康水果的数量最多，因此是最好的储藏条件。平均蜡浓度为 21.23 gm-2，但在 7 天后 DCA-RQ1.5 条件下该值较低。DCA 处理的蜡浓度从保质期的 7 天增加到 14 天。色谱分析允许鉴定棕榈酸、硬脂酸、油酸和亚油酸，在所有处理中顺式 11,14-二十碳二烯酸和 CA 中的棕榈酸在 14 天时增加。三萜类化合物，如熊果酸和齐墩果酸，在 CA 中含量较高，而在两种 DCA-RQ 处理中，醇类（如 10-二十烷醇）含量较高。所有处理都含有高浓度的二十烷和二十烷醛。DCA-RQ 减少油腻的发生率。由极低的氧水平和由此产生的更高浓度的乙醇（由两个 RQ 水平监测）诱导厌氧代谢，诱导了可能有利于某些适应低氧分压 (pO2) 机制的化合物的形成。而在两种 DCA-RQ 处理中，醇类（如 10-二十烷醇）含量较高。所有处理都含有高浓度的二十烷和二十烷醛。DCA-RQ 减少油腻的发生率。由极低的氧水平和由此产生的更高浓度的乙醇（由两个 RQ 水平监测）诱导厌氧代谢，诱导了可能有利于某些适应低氧分压 (pO2) 机制的化合物的形成。而在两种 DCA-RQ 处理中，醇类（如 10-二十烷醇）含量较高。所有处理都含有高浓度的二十烷和二十烷醛。DCA-RQ 减少油腻的发生率。由极低的氧水平和由此产生的更高浓度的乙醇（由两个 RQ 水平监测）诱导厌氧代谢，诱导了可能有利于某些适应低氧分压 (pO2) 机制的化合物的形成。