Thus, with the calculated value, it was
possible to compare the moisture sorption by humidity-regulating
trays. The amount of water produced per day at 96% RH and 4 C
was approximately 1.6
102mg s1 this increased by at least
2–6 times for the temperature in the range of 12–20 C. However,
the amount of water produced at 100% RH was reduced to half
(0.8
102mg s1 at 4 C) compared to 96% RH, but this rate of
water produced was still enough to form condensation inside the
package. Therefore, in order to avoid condensation and maintain an
optimal RH of 90–96% (Villaescusa and Gil, 2003), the humidity-
regulating tray should have a capacity to absorb at least 8.4 g water
for storing 250 g of mushrooms for 6 days at 4 C. In the control-PP
trays, the RH rapidly increased and the headspace was saturated