Conservação pós-colheita de cultivares de mandioca sob refrigeração

Abstract

Cassava (Manihot esculenta Crantz) roots shows high postharvest perishability due to deteriorations after initial processing and storage at room temperature. The objective of this study was to evaluate postharvest conservation of four cassava cultivars in different packages in a refrigerated environment during 15 days of storage. Two experiments were conducted: experiment 1: low density polyethylene packages with four cassava cultivars (BRS 397, BRS 398, BRS 400 and IAC 576-70) and experiment 2: expanded polystyrene trays wrapped in poly (vinyl chloride) with four cassava cultivars (BRS 397, BRS 398, BRS 400 and IAC 576-70). Trials were carried out at Universidade Federal de Jataí in completely randomized design with three replications, with storage periods (0, 5, 10 and 15 days) as a source of variation. Roots were submitted to a pre-processing and then were packed and stored in a refrigerated environment at 5 ± 1 ° C. The evaluated characteristics were loss of fresh weight, color difference, hue angle, chroma and cooking time. The two packages favored low values of fresh weight loss in refrigerated environment at 5 ± 1 ° C. The cultivars BRS 397 and BRS 398 showed a high capacity to maintain the color of the roots throughout the evaluation period in the two packages used. The cooking time of the cassava roots showed low variation during 15 days of storage.