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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 postharvest 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 ratio, 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 harvesting time and the response variables were the physicochemical parameters. The results showed variation in weight near to 7%, the tint color parameter was between -61.46 and 86.74, chroma between 26.31 and 37.11 and ΔE 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 between 51.7% and 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 to ripening were 9, 14 and 21 for the fruits of 18, 16 and 14 weeks from flowering., En el departamento de Caldas, Colombia, se realizó la caracterización física, química y fisiológica durante las fases de cosecha y poscosecha del plátano Dominico Hartón Musa AAB Simmonds cultivado en el municipio de Belalcázar. La investigación se hizo con frutos de 14, 16 y 18 semanas después de la floración. Cada 2 días y hasta senescencia se evaluaron los cambios de peso, firmeza, parámetros de color L*a*b*, relación pulpa-cáscara, índice de madurez, pH, humedad, almidones, índice de respiración y tasa de etileno. En este trabajo se utilizó un diseño longitudinal de medidas repetidas, balanceado, con un factor en tres niveles. El factor evaluado fue el tiempo de cosecha y las variables de respuesta fueron los parámetros fisicoquímicos. Los resultados mostraron variación en peso cercanas a 7%, el parámetro de color tinte varió entre -61.46 y 86.74, el croma entre 26.31 y 37.11 y el ΔE entre 1.4603 y 8.360, el pH varió entre 6.2 y 3.98, una relación pulpa-cáscara entre 2.53 y 4.11, la relación °brix- acidez entre 11.36 y 26.2, la humedad entre 60.56% y 56%, el almidón entre 51.7% y 67% de MS, la tasa de producción de CO2 entre 3.4 y 8.9 g-kg por hora, el etileno entre 24 y 225 μlt-kg por hora. Los parámetros de maduración mostraron comportamiento climatérico y los días a maduración total fueron de 9, 14 y 21 para los frutos de 18, 16 y 14 semanas desde floración.

Tipo de documento: Artículo - Article

Palabras clave: Características agronómicas, características físico-químicas, Dominico Hartón, maduración, poscosecha, Agronomic characteristics, Dominico Hartón, maturation, physicochemical characteristics, postharvest.





Fuente: http://www.bdigital.unal.edu.co


Introducción



Incidence of the harvesting age on the behavior of postharvest characteristics of Dominico Hartón Plantain (Musa AAB Simmonds) Efecto de la edad de cosecha en las características poscosecha del plátano Dominico-Hartón (Musa AAB Simmonds) Luis Fernando Mejía-Gutiérrez1*, Gloria Inés Giraldo-Gómez2, and Diógenes de Jesús RamírezRamírez3 1 Professor Department of Engineering, Universidad de Caldas, Calle 65 No.
26-10, Manizales, Caldas, Colombia.
2Proffesor Department of Physics and Quemistry, Universidad Nacional de Colombia, Sede Manizales, Carrera 27 No.
64-60, Colombia. 3 Professor Departmento of Mathematics and Statistics, Universidad Nacional de Colombia Sede Manizales, Carrera 27 No.
6460, Colombia.*Corresponding author: luis.mejia_g@ucaldas.edu.co, lufermegu@gmail.com Rec.: 02.02.12 Acept.: 24.11.12 Abstract 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 postharvest 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 ratio, 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 harvesting time and the response variables were the physicochemical parameters.
The results showed variation in weight near to 7%, the tint color parameter was between -61.46 and 86.74, chroma between 26.31 and 37.11 and ∆E 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 between 51.7% and 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 cl...






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