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Juiciness and pectins solubilization in ‘Gala’ apples, stored in controlled atmosphere, in two levels of relative humidity

The objective of this study was to evaluate the effect of relative humidities (RH) (96 and 90%), in apples ‘Gala’ stored by 8 months in controlled atmosphere (CA) on the juiciness loss, flesh firmness, soluble pectin content (SPC) and activities of pectinmethylesterase (PME) and polygalacturonase (PG). The storage temperature was 0.5°C. At the end of the CA period and seven more days at 20°C were evaluated the juiciness, flesh firmness, SPC, PME and PG. RH of 96 to 90%, did not affect the juiciness, firmness, SPC and PME activity, but 90% of RH increased PG activity, after 8 months in AC and 7 more days at 20°C.

Malus domestica; storage; postharvest


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