Reduced ethylene synthesis of mangoes under high CO2 atmosphere storage

. High CO2 atmospheres have been reported to be accountable for slower ripening processes of many fruit species. In modified or controlled atmosphere storage mangoes (Mangifera indica L.) delayed is attributed the effects on ethylene biosynthesis, which reduced under concentrations beyond 10%. present work objective was determine if those elevated synthesis could action upon ACC oxidase. Mature green tree ripe `Tommy Atkins` were, in four experiments, held a flow through system either 10 25% mixed 5% O2 only air 14 21 days at 5, 8 12°C. Mangoes did not produce detectable levels ethylene, whereas 10% production rates were significantly suppressed 5 8°C. However, 1-aminocyclopropane-1-carboxylic acid (ACC) mango mesocarp tissue retrieval from similar controls and synthase activity completely inhibited. The direct oxidase considered most important factor inhibiting biosynthesis atmospheres.