temperature had a DE* value higher than 3, DE* values of greater than 3 have been reported as a visual threshold for the distinction of colour changes by the human eye (Martínez-Cervera, Salvador,Muguerza, Moulay, & Fiszman, 2011). Images of the bread surface are shown in Fig. 1 and show that the application of the probiotic edible films was primarily associated with higher brown colour compared to the control breads. The latter has been reported as