ISHS Acta Horticulturae 269: Symposium on Tropical Fruit in International Trade
PHYSIOLOGICAL BREAKDOWN IN VAPOR HEAT-TREATED ‘CARABAO’ MANGO |
| Authors: | E.B. Esguerra, S.R. Brena, M.U. Reyes, M.C.C. Lizada |
| Abstract:
The physiological and physico-chemical changes in ‘Carabao’ mango fruits subjected to vapor heat treatment (VHT) at a pulp temperature of 46°C for 10 min were investigated. VHT is the accepted quarantine treatment for mangoes exported to Japan. VHT induced internal breakdown in the inner mesocarp of the ripe fruit which is characterized by the presence of white, starchy, and tough lesions, which, in severe cases, is accompanied by a fermented odor. The incidence and severity of this VHT-induced disorder depended upon growing area and maturity of the fruit at harvest. VHT did not alter the rate of ripening nor the overall quality of the fruit at the table ripe stage. However, a greater proportion of treated fruits attained a full yellow peel color compared to non-treated fruits. Internal breakdown appears to be induced by VHT via a depletion of the internal oxygen levels in the fruit. | |
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