Efficacy of diphenylamine, ultra-low oxygen, and ethylene scrubbing on scald control in 'Delicious' apples
1990
Lau, O.L.
Incidence of scald in nontreated and DPA (2000 mg.liter-1)-treated 'Delicious' apples (Malus domestica Borkh.) was assessed after 8.5 months in 1.5% or 0.7% O2 plus 1.5% CO2 at 0.2C, with and without C2H4 scrubbing. Incidence of scald was high in non-DPA fruit held in 1.5% O2, and DPA treatment reduced scald in fruit held in 1.5% or 0.7% O2. Scald control was better with 0.7% O2 and no DPA treatment than with 1.5% O2 and a DPA dip. Ethylene scrubbing had no effect on scald in fruit held in 0.7% or 1.5% O2. Susceptibility of fruit to scald and flesh browning exhibited seasonal variation, which was related to the differences in fruit maturity and the amount of watercore at harvest, respectively.
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