Effect of Chilling-Injury on Texture and Fungal Rot of Mangoes (Mangifera indica L.)

ABSTRACT

In this study we have considered the evolution of texture as determined by a puncture test and of the intensity of fungal rot in mangoes. Fruits were placed at room temperatures after 3 wk storage at 4° or 12°C under various humidity conditions. Observed differences in hardness (INSTRON) of the skin and the flesh appeared related to fruit ripening. Inducing chilling-injury on fruits initially stored at 4°C accelerated softening after fruits were transferred at 20°C. Gradual humidification of ambient atmosphere reduced this phenomenon, especially by limiting water losses, thus maintaining cell turgescence. Susceptibility to fungal rotting increased with fruit softening. Fungi proliferation seemed more rapid on chilling-injured batches. A clear relationship was evidenced between water losses and fungal development.