Bulk density and porosity values of raw and frozen/thawed
blueberries subjected to HADþMWVD, HAD and MWVD are given
in Table 5. The porosity of dried blueberries varied significantly
across drying methods and conditions and ranged from 63 ± 3% to
83 ± 3%. The porosity of MWVD berries ranged from 78 ± 2% to
82 ± 1%, and the porosity of HAD þ MWVD berries from 75 ± 6% to
83 ± 3%. Substantial shrinkage during HAD was produced fruits
with the lowest porosity that ranged between 63 ± 3% and 70 ± 4%
(Table 5).