The red wine grape bunches were carefully harvested (sound
and uniformly sized berries) at 26Brix. After 1 h of transport under
shaded conditions, the bunches (arrival temperature at lab:
21 C) were placed in a single layer in perforated boxes
(60 40 15 cm). For each treatment, 6 perforated boxes with
6 kg (±500 g) of bunches each were placed in a small metallic tunnel
(45 45 100 cm) fitted with an exhaust fan with air-flow
regulation (1.5 ± 0.3 m/s). The small tunnels were placed in three
thermohygrometric controlled rooms at 10 (±1)C and 70% (±5%)
RH for the treatments; at the end of treatments, RH was reduced
to 50% using a dehumidifier. The following treatments were
performed