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- Author or Editor: José M. Aguilera x
Strawberries (Fragaria × ananassa Duch. `Tudla') were inoculated with gray mold conidia (Botrytis cinerea Pers.) and were subjected to postharvest heat treatment by dipping in water at various temperatures for 15 min. Heat treatment delayed Botrytis proliferation, but using dips at ≥48C caused fruit to soften and develop an atypical pink pigmentation. Fruit treated at 44 or 46C showed the best retention of firmness and maintained initial quality, developing neither an off-color nor an off-flavor.
The objective of this work was to obtain information for designing modified-atmosphere packages for storing and transporting cherimoyas. Respiration rates of `Conchs Lisa' cherimoyas at 10C were monitored in a flow-through system using O2 consumption and CO2 production under atmospheres containing 5910, 10%, 15%, or 20% O2. Under normal atmosphere (20% O2), the respiration curve exhibited atypical climacteric rise 15 days after harvest, while 15% and 10 % O2 delayed this event. Fruit kept in 5% O2 did not show a detectable climacteric rise and did not produce ethylene. All fruit ripened normally after being transferred to air storage at 20C; however, the time needed to reach an edible condition differed with treatment and was inversely proportional to O2 content. Delay of the climacteric by 5 % O2, coupled with the continued ability to ripen, makes this procedure suitable for controlled- or modified-atmosphere cherimoya packaging.