Control films had the same amount of protein per
surface area. The plates were placed on levelled surfaces to obtain
films with homogeneous thickness, dried in a ventilated drying
chamber (30 C, 50% relative humidity, 20 h), peeled off, and stored
at room temperature at 57% relative humidity in desiccators with
saturated solutions of sodium bromide. Four types of films were
prepared (treatments): a) without essential oils; b) with clove
essential oil; c) with garlic essential oil; and d) with origanum