Estádio de maturação na conservação de maçãs (Malus doméstica Borkh L.), cultivar Jonagold

Abstract

The maturation stadium was determined for apples of the cv. Jonagold, stored in conventional refrigerated atmospheres (AR) and controlled (AC). The apples were picked in three maturation stadiums and stored in convencional refrigerated at 0,5 ºC and 92-95% of relative humidity and in two conditions of controlled atmosphere: AC1,where the O were reduced for 1,5 kPa and the CO2 increased for 2,5 kPa; AC2 with 1,5 kPa of O2 and 3,5 kPa of CO2. In the installation of the experiment to the 90, 180, 270 days, samples werecollected for the determination of pulp firmness, total soluble solids, acidity total and etilene production. The analyses were accomplished an and six days after the retreat of the fruits of cold camera. The results indicated that the crop of the fruit with 84 N of pulp firmess, index of iodine-starch of 3,0 to 3,5, 14,8 ºBrix and a surface coloration with 60% of red coloration allows to associate the good conservation potention with good appearance attributes.