UV-C light inactivation of single and composite microbial populations in tangerine-orange juice blend. Evaluation of some physicochemical parameters

•UV-C inactivation effectiveness on single or composite inocula in orange-tangerine juice was studied.•Moderate inactivation of single or composite inocula was achieved after UV-C exposure.•S. cerevisiae inactivation by UV-C was impaired by background microflora in the juice.•Coroller model best described UV-C inactivation of single and composite cultures.•UV-C treatment hardly modified PC, TAA and other physicochemical parameters of the juice.