prepared according to the supplier's
recommendations by adding 116 mg/L of BSM supplement
(Fluka) to the medium. The antibiotic and the BSM supplement
were directly added and solubilized into the chilled sterilized medium.
Serial dilutions of each vortexed sap beverage were pourplated
onto the different appropriated selective media prior to incubation.
Selective media were incubated aerobically (lactobacilli)
or anaerobically (bifidobacteria) at 37 C for 72 h. Uninoculated
plates and inoculated non-selective medium (MRSc) incubated as
previous were used as control