Abstract Muscadine grape (Vitis rotundifolia Michx) is a non-climacteric fruit that rapidly loses quality during storage. This study aimed to assess the effect of controlled atmosphere (CA) on quality parameters and muscadine grapes decay. Berries of two muscadine grape cultivars, Triumph, and Supreme, were stored at 4 °C with 95 % relative humidity in either regular air (AIR), regular CA (RCA) (6 % O2 + 10 % CO2), or CA with extreme CO2 level (ECA; 4 % O2 + 30 % CO2) for up to 42 d. Treated berries with either RCA or ECA provided better control of weight loss. Both CA treatments reduced decay incidence, but there was no decay in ECA berries after 42 d for both cultivars and no evidence of CO2 injury. The results showed that berry softening was significantly delayed by RCA and ECA, which had a lower ethylene production rate than berries exposed to AIR. Application of RCA and ECA also retained greater total antioxidant activity, total phenolic compounds, and firmness compared to AIR. These results demonstrate that maintaining CA conditions postharvest leads to improved preservation of compositional quality and delayed softening and decay of harvested muscadine grapes compared with AIR storage.

中文翻译：

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圆叶葡萄（Vitis rotundifolia Michx）对富二氧化碳大气储存的生理反应和品质属性

摘要 圆叶葡萄（Vitis rotundifolia Michx）是一种非更年期水果，在储存过程中会迅速降低质量。本研究旨在评估受控气氛 (CA) 对质量参数和麝香葡萄腐烂的影响。将两个麝香葡萄品种 Triumph 和 Supreme 的浆果储存在 4 °C、相对湿度为 95% 的普通空气 (AIR)、普通 CA (RCA)（6% O2 + 10% CO2）或 CA 与极端环境中CO2 水平（ECA；4 % O2 + 30 % CO2）长达 42 天。用 RCA 或 ECA 处理过的浆果可以更好地控制体重减轻。两种 CA 处理都降低了腐烂发生率，但两个品种的 ECA 浆果在 42 天后没有腐烂，也没有 CO2 损伤的证据。结果表明，RCA和ECA显着延迟了浆果软化，与暴露在空气中的浆果相比，其乙烯生产率较低。与 AIR 相比，RCA 和 ECA 的应用还保留了更高的总抗氧化活性、总酚类化合物和硬度。这些结果表明，与空气储存相比，收获后保持 CA 条件可以改善成分质量的保存，并延迟收获的麝香葡萄的软化和腐烂。