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Metabolism of prebiotic β-(2-1)-fructans by L. paracasei W20, L. salivarius W57, and B. longum NCC 2705. Fructose uptake via a fructose-PTS transport system (FT-PTS), sucrose uptake via a sucrose-PTS system (PTS_ScrA) or a sucrose permease (SucP), and a FOS/raffinose utilization pathway with a FOS-ABC transport system (Msm_ABC) followed by intracellular β-fructosidases ScrP/GtfA and ScrB/SacA.
