Potassium permanganate effects in postharvest conservation of the papaya cultivar Sunrise Golden

Pesquisa Agropecuária Brasileira

Danieele Fabíola Pereira Silva²  Luiz Carlos Chamhum Salomão²  Dalmo Lopes De Siqueira²  Paulo Roberto Cecon¹  Aline Rocha² 

[1] ,Universidade Federal de Viçosa Departamento de Fitotecnia Viçosa MG ,Brazil

关键词: Carica papaya;    ethylene absorber;    modified atmosphere;    ripening;    shelf life;    storage;    Carica papaya;    absorvedor de etileno;    atmosfera modificada;    amadurecimento;    vida de prateleira;    armazenamento;   

DOI  :  10.1590/S0100-204X2009000700003

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the effects of KMnO4 on the extension of postharvest life of 'Sunrise Golden' papaya, stored under modified atmosphere and refrigeration. Fruit with up to 10% yellow peel were harvested in a commercial orchard in Linhares, state of Espírito Santo, Brazil. Sets of three fruit (unit mass of 289.9±18.5 g) were wrapped in low-density polyethylene films (28 ¼m thick) containing sachets of KMnO4 at 0, 0.5, 1, 1.5, and 2 g per bag. The bags were sealed and stored at 10.4±0.9°C and 90±5% relative humidity for 25 days. After this period, the fruit were removed from the bags and maintained at 21±0.8°C and 90±5% relative humidity until complete ripening. Four days after bag sealing, CO2 concentration stabilized in all treatments, and was higher in bags without KMnO4. In all treatments, fruit reached the climacteric respiratory peak on the third day after bag removal, coinciding with peel color index of 3.5. Increasing the KMnO4 dose reduced the losses in fruit fresh matter, consistency and pulp electrolyte leakage. Potassium permanganate was effective in maintaining the fruit at the pre-climacteric stage during the 25-day storage, and did not interfere with normal ripening after bag removal.

【 授权许可】

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