Use of potassium permanganate in the sugar apple post-harvest preservation

• Autor(a) principal: Chaves, M. A
• Data de Publicação: 2007
• Outros Autores: Bonomo, R. C. F., Silva, A. A. L., Santos, L. S., Carvalho, B. M. A., Souza, T. S., Gomes, G. M. S., Soares, R. D.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://dx.doi.org/10.1080/11358120709487711; http://www.locus.ufv.br/handle/123456789/23503
• topic: Sugar apple; Potassium permanganate; Titratable acidity; Chirimoya; Permanganato de patasio; Acidez tituable

The objective of this work was to evaluate the effect of the concentration of KMnO 4 on post-harvest parameters of the sugar apple fruit (Annona squamosa, L.) packed in 0.1mm thick PVC films. Groups of 4 fruits and a TNT bag with KMnO 4 , were wrapped in a PVC film and kept in a cold chamber at 16 o C with relative humidity between 90 and 100 %. A random experimental design was used in a 5 x 4 factorial scheme. The relationship of total soluble solids/titratable acidity presented different behavior comparing to the other variables, though it was possible to establish reasonable correlation taking the permanganate level and the storage time as independent variables and one of the following as a dependent variable: soluble solids level, pH, titratable acidity and weight loss. It was concluded that KMnO 4 delayed the maturity of the fruits, increased the period for fruits to hit maximum solid solutes content and increased the pH when it reached consumption period. It also decreased the titratable acidity.