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Dynamic Control of Atmosphere and Temperature Based on Fruit CO2 Production: Practical Application in Apple Storage and Effects on Metabolism, Quality, and Volatile Profiles

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Abstract

This study assessed the potential of a novel two-factor dynamic storage system DCA-CD Plus, which allows estimation of the oxygen partial pressures and room temperatures for optimum fruit conservation, based on monitoring fruit CO2 production. This was achieved for the apple cultivars “Jonagold,” “Pinova,” and “Red Prince” by a comparison with established postharvest strategies such as storage under regular atmosphere (RA) or static controlled atmosphere (CA), while also incorporating the effects of the ethylene inhibitor 1-methylcyclopropene (1-MCP). In contrast to other dynamic controlled atmosphere (DCA) systems, DCA-CD Plus requires no additional installation of technology in the storage facility and does not rely on a small sample size to estimate the optimum storage conditions. DCA-CD Plus allowed storing different apple cultivars together, a considerable advantage for commercial practice. Storage under DCA-CD Plus slowed down the fruit respiration rate and suppressed ethylene synthesis, consequently providing a greater maintenance of firmness (FF) and titratable acidity (TA) when compared to RA or CA storage. Variable setting of storage temperatures reduced the energy consumption of cooling equipment without negatively affecting fruit quality conservation. CA storage and 1-MCP applications suppressed the formation of aroma in the stored apples, while DCA-CD could safely induce anaerobic metabolism, thus increasing the substrate availability for the synthesis of aroma compounds.

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FB was responsible for conceptualizing the study, investigation, formal analysis, visualization, and wrote the main manuscript text. KK aided in the investigation and reviewed and edited the manuscript. FRT was responsible for develo** the methodology and conceptualizing the study, and reviewed and edited the manuscript. DK reviewed and edited the manuscript. DAN supervised the research activity and provided resources, was responsible for develo** the methodology and conceptualizing the study, and reviewed and edited the manuscript.

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Correspondence to Felix Büchele.

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Büchele, F., Khera, K., Thewes, F.R. et al. Dynamic Control of Atmosphere and Temperature Based on Fruit CO2 Production: Practical Application in Apple Storage and Effects on Metabolism, Quality, and Volatile Profiles. Food Bioprocess Technol 16, 2497–2510 (2023). https://doi.org/10.1007/s11947-023-03079-0

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  • DOI: https://doi.org/10.1007/s11947-023-03079-0

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