Efeito de épocas de colheita e tempo de armazenamento de tubérculos de batata sobre características de qualidade pós-colheita

Abstract

The phases of harvest and postharvest determining the final potato tubers quality. The season of harvest and the time that the tubers remain stored can affect several factors such as the occurrence of disease, susceptibility of the tubers to mechanical damage y physicochemical quality of tubers. The aim of this research was study two potato cultivars as your answer on the physicochemical characteristics to different harvest seasons and storage times. The cultivars studied were Agatha and Atlantic. The treatments consisted of four harvest seasons (14, 28, 42 and 56 days after desiccation) and 4 storage times (0, 14, 28 and 42 days) in factorial arrangement 4x4. We evaluated the soluble solids, firmness of pulp, the pulp pH, titratable acidity, dry matter content and weight loss. The increase in storage time and delayed harvest reduced fruit firmness in both cultivars and increased the soluble solids. The weekly weight loss showed reduction with increasing the storage period and increased with the delay in harvest. The dry matter content, the pulp pH and titratable acidity were not affected by the harvest season or storage periods.