Effect of Low Pressure and Low Oxygen Treatments on Fruit Quality and the In Vivo Growth of Penicillium digitatum and Penicillium italicum in Oranges

Penicillium digitatum and P. italicum are the major postharvest pathogens in citrus. To reduce decay, use of low-oxygen (0.9 kPa O2) (LO) or low-pressure (6.6 kPa) (LP) treatments were evaluated during storage navel oranges for four eight days. The results showed that exposure to both LO LP reduced vivo pathogen growth compared untreated (UTC) oranges, with being most effective. effects on fruit metabolism quality further assessed, it was found there no effect ethylene production, respiration rate, TSS (total soluble solids), TA (titratable acidity) firmness. However, did have an juice ethanol concentration weight-loss. adding exogenous at either (1 µL/L) atmospheric pressure (AP) (at 0.1, 1 also evaluated, addition these concentrations had mould diameter AP. Therefore, 0.9 O2 6.6 20 °C potential non-chemical development minimal quality.