Abstract
Camu–camu, a native fruit from the Amazon region, is a rich source of bioactive compounds. However, its intense metabolic activity and high-water content limit the fruit’s postharvest storage and marketing. The aim of this study, conducted in two parts, was to evaluate the effects of 1-MCP and storage temperature on the physiology and postharvest preservation of camu–camu fruit. In part 1 of the study, fruit harvested at maturity stage 3 were divided into groups: control, 1-methylcyclopropene (1-MCP; 900 nL L−1; 12 h) and ethylene (1000 µL L−1; 24 h) and were stored at 22 ± 1 °C and 85 ± 5% RH for 9 days. In part 2, fruit harvested at maturity stage 3 were stored at 5, 10, 15, 20, or 25 ± 1 °C and 85 ± 5% RH for 9 days. During storage, fruit were evaluated daily for decay, mass loss, respiratory activity, and ethylene production, and every 3 days they were evaluated for peel color, pulp firmness, soluble solids content, total titratable acidity, ascorbic acid, total chlorophyll, and total anthocyanins. Fruit treated with 1-MCP exhibited delayed ripening due to lower metabolic activity, as evidenced by delay to softening, reduced mass loss and no decay. Storage at 5 °C prevented ethylene production, mass loss, color changes, and maintained pulp firmness, while did not affect soluble solids content. The results indicated that storage of camu–camu fruit at 5 °C or at 25 °C following application of 900 nL L−1 1-MCP were effective strategies to delay ripening and maintain fruit quality up to 9 days.
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The authors thank Estação Experimental de Citricultura de Bebedouro (EECB), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP—2009/13653-7) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq—308531/2015-3).
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Communicated by P. K. Nagar.
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Pinto, P.M., Spricigo, P.C., da Silva, S.R. et al. Effect of 1-MCP and low-temperature storage on postharvest conservation of camu–camu. Acta Physiol Plant 40, 205 (2018). https://doi.org/10.1007/s11738-018-2768-7
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DOI: https://doi.org/10.1007/s11738-018-2768-7