Abstract

MEJIA-GUTIERREZ, Luis Fernando; GIRALDO-GOMEZ, Gloria Inés  and  RAMIREZ-RAMIREZ³, Diógenes de Jesús. Incidence of the harvesting age on postharvest characteristics behavior of Dominico Hartón Plantain (Musa AAB Simmonds). Acta Agron. [online]. 2012, vol.61, n.4, pp.345-352. ISSN 0120-2812.

In this study a physical, chemical and physiological characterization of Dominico Hartón plantain grown in the Belalcázar municipality (Department of Caldas, Colombia) during harvest and post-harvest was carried out. The research was performed with fruits of 14, 16 and 18 weeks after flowering. Every two days until senescence changes in weight, firmness, parameters of color L*a*b*, pulp/peel, the relationship pulp/shell, maturity index, pH, humidity, starch, respiration rate and ethylene rate were measured. This study used a longitudinal repeated measures design, balanced, with a three-level factor. The factor evaluated was harvest time and the response variables were the physicochemical parameters. The results showed variation in weight near to 7%, the color parameter tint was between -61.46 and 86.74, chroma between 26.31 and 37.11 and DE of 1.4603 to 8360, the pH ranged from 6.2 to 3.98, pulp/peel of 2.53 to 4.11, the relationship °Brix/acidity of 11.36 to 26.2, humidity content between 60.56% and 56%, starch, 51.7% to 67% DM, the CO₂ production rate between 3.4 and 8.9 g / kg. h, ethylene from 24 to 225 µL / kg. h. The maturation parameters showed climacteric behavior and total days of ripening were 9, 14 and 21 for the fruits of 18, 16 and 14 weeks from flowering.

Keywords : Agronomic characteristics; Dominico Harton; maturation; physicochemical characteristics; postharvest.

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