The yeast counts were significantly lower when the grape
berries were treated with the ozone for 18 h (ANOVA–Tukey’s Test;
Ck treatment P = 0.01) and did not increase at 35% w.l. (ANOVA–
Tukey’s Test; P = 0.04) and at 20% w.l. (ANOVA–Tukey’s Test
P = 0.00). According to the Tukey’s Test, no significant differences
were found between shock and long ozone treatments