Rocha et al. (2003) observed increased total phenol amounts after one day of storage in the minimally processed potatoes cv 'Desireé'. Ke and Saltveit (1989) found that cutting procedures in the lettuce leaves led to an increase in the total phenol amount. Howard and Griffin (1993) observed that increases in the phenol amount of minimally processed carrots were related to the increase in the PAL activity under the stressful conditions.