Resumo

AFRICANO, KAREN LISSETH et al. Postharvest characterization of peach fruit [Prunus persica (L.) Batsch] cv. Dorado produced under high-altitude tropical conditions. rev.colomb.cienc.hortic. [online]. 2016, vol.10, n.2, pp.232-240. ISSN 2011-2173.  https://doi.org/10.17584/rcch.2016v10i2.5712.

ABSTRACT Peach belongs to the Rosaceae family; its fruit is a drupe highly appreciated for its pleasant flavour, aroma, and nutritional characteristics. It is also a highly perishable climacteric fruit with elevated respiratory rates and ethylene production. In order to characterize postharvest behavior of peach cv. Dorado fruits under high tropic conditions, fruits at physiological maturity were harvested in the municipality of Tuta (Boyacá, Colombia). The following physicochemical parameters were measured six times, every third day: weight loss, skin and pulp color, respiration rate, firmness, extensibility, total soluble solids (TSS), and total titratable acidity (TTA). In accordance with the respiration rate, peach fruits showed a climacteric behavior; reaching a climacteric peak at the ninth day of storage, weight loss increased linear with the time, reaching 17.18% on day 11 of storage (temperature: 18±2ºC, relative humidity: 75±5%). Firmness decreased along the storage period achieving values of 6.5N, in a similar way, TTA declined with the advance of the fruit ripeness stage; falling from 0.95% on day 1 to 0.76% on day 11 of storage. Moreover, skin and pulp color indexes, TSS, maturity ratio and extensibility increased during postharvest.

Palavras-chave : storage; climacteric; ripening.

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