Resumo

FERNANDEZ, Paula et al. Pineapple osmodehydration with reuse of the sucrose syrup. Rev. cienc. tecnol. [online]. 2017, n.28, pp.21-28. ISSN 1851-7587.

In this study, changes in the efficiency process, in the characteristics of the product and the hypertonic solution were analyzed during the application of successive cycles of osmotic dehydration of pineapple reusing the solution of sucrose without reconditioning. In each cycle it was evaluated water loss, solute gain, citric acid content and pH in the fruit; and changes in optical transmittance, soluble solids content, citric acid content and pH in the osmotic syrup. The sucrose syrup was reused for five successive cycles of osmotic dehydration at 40° C with constant stirring. Trials were performed with initial concentration of osmotic syrup of 40 and 60° Brix; this concentration at the end of the fifth cycle was 33 and 45° Brix, respectively. In both cases, the efficiency of the dehydration process of the fifth cycle was reduced by 30% in comparison to the first cycle.

Palavras-chave : Dehydration; Pineapple; Reuse of osmotic syrup.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )