This study included the influence of different temperatures 30 , 35 , 40 , 45 ,50, 55 C° and 14 exposure periods 5 ,10 , 15 ,20 , 25 ,30 , 35 , 40 , 45 , 50 , 55 , 60 , 65 , 70 minutes in order to compare with 30 C° , it ...