The accumulation of lysed or dead bacterial cells can increase the turbidity of the fruit juices therefore, themaintenance of this parameter in the probiotic juices (PRO, PROACID
and SYN) is an indication that a large part of the probiotic
culture survived during refrigerated storage of the orange juice. The
intensification of the color may have been caused by oxidative and
non-oxidative reactions of polyphenols, resulting in colored
condensation products; or by Maillard Reaction or melanoidins
formation