Table S1. Concentrations of the free amino acids (mmol/L) in broth fermented with different pediococcal strains. The values of two independently performed experiments are shown. Basal broth stands for the non-inoculated medium. "(AABA: ?-aminobutyrate, GABA: ?-aminobutyrate, FAA: free amino acids)" Experiment_1 Species/ Broth Strain Alanine AABA Arginine Asparagine Aspartate Citrulline GABA Glutamin Glutamate Glycine Histidine Isoleucine Leucine Lysine Methionine Ornithine Phenylalanine Serine Threonine Tryptophan Tyrosine Valine Total FAA P. acidilactici FAM13473 3.8 2.7 0.0 0.5 1.1 0.1 0.0 0.0 3.3 1.2 0.3 1.3 1.9 1.3 0.3 0.9 0.8 4.1 3.1 0.2 0.2 1.7 28.9 P. acidilactici FAM13881 3.3 1.9 0.0 0.6 1.1 0.4 0.0 0.0 3.2 1.1 0.3 1.2 1.8 1.2 0.3 0.5 0.8 4.5 3.7 0.2 0.2 1.7 28.0 P. acidilactici FAM17411 6.4 5.2 0.0 0.5 1.0 0.0 0.0 0.0 2.9 1.1 0.3 1.1 1.7 1.1 0.3 0.8 0.6 0.6 0.1 0.2 0.1 1.6 25.6 P. acidilactici FAM17418 6.8 5.4 0.0 0.6 1.1 0.0 0.1 0.0 3.1 1.4 0.3 1.2 1.8 1.2 0.3 1.0 0.7 1.0 0.1 0.2 0.2 1.7 28.2 P. acidilactici FAM17422 6.8 5.4 0.0 0.5 1.0 0.0 0.0 0.0 3.0 1.1 0.3 1.2 1.8 1.2 0.3 0.9 0.6 0.4 0.0 0.2 0.1 1.6 26.7 P. acidilactici DSM 20082 5.7 5.0 0.0 0.6 1.2 0.0 0.1 0.0 3.5 1.3 0.3 1.3 1.9 1.3 0.3 1.0 0.2 2.2 0.7 0.2 0.1 1.8 28.6 P. acidilactici FAM18098 7.8 5.9 0.0 0.6 1.1 0.0 0.1 0.0 3.3 1.2 0.3 1.3 1.9 1.3 0.3 0.9 0.7 0.1 0.0 0.2 0.2 1.7 28.9 P. acidilactici FAM18987 3.5 1.6 0.0 0.5 1.2 0.1 0.0 0.0 3.4 1.3 0.3 1.3 1.9 1.3 0.3 1.0 0.6 4.5 4.1 0.2 0.2 1.8 29.1 P. acidilactici FAM19460 7.3 5.8 0.0 0.5 1.1 0.2 0.1 0.0 3.2 1.2 0.3 1.3 1.9 1.2 0.4 0.8 0.6 0.3 0.0 0.2 0.2 1.7 28.3 P. acidilactici FAM20559 7.8 5.9 0.0 0.5 1.2 0.4 0.1 0.0 3.3 1.2 0.3 1.3 1.8 1.3 0.3 0.6 0.7 0.2 0.0 0.2 0.2 1.7 28.9 P. pentosaceus FAM13073 2.1 0.1 0.0 0.5 1.0 0.0 0.0 0.0 3.0 1.0 0.3 1.1 1.7 1.1 0.3 0.8 0.9 4.9 5.0 0.2 0.2 1.6 26.1 P. pentosaceus FAM17622 2.2 0.0 0.0 0.5 1.0 0.2 0.0 0.1 3.1 1.0 0.3 1.2 1.8 1.1 0.3 0.7 0.9 5.8 5.3 0.2 0.2 1.6 27.5 P. pentosaceus FAM18813 2.3 0.1 0.0 0.5 1.2 0.0 0.0 0.0 3.3 1.2 0.4 1.3 1.9 1.4 0.3 1.0 0.9 5.3 5.6 0.2 0.2 1.8 29.0 P. pentosaceus FAM19080 2.2 0.1 0.0 0.5 1.1 0.1 0.0 0.1 3.2 1.1 0.3 1.2 1.8 1.2 0.3 0.8 0.9 5.9 5.5 0.2 0.2 1.7 28.6 P. pentosaceus FAM19132 2.2 0.1 0.0 0.5 1.0 0.1 0.0 0.0 3.1 1.1 0.3 1.2 1.8 1.2 0.3 0.8 0.9 5.0 5.4 0.2 0.2 1.6 26.9 P. pentosaceus FAM19144 2.2 0.0 0.0 0.6 1.0 0.1 0.0 0.0 3.1 1.1 0.3 1.2 1.8 1.2 0.3 0.8 0.9 5.9 5.6 0.2 0.2 1.7 28.3 P. pentosaceus FAM19169 2.3 0.1 0.0 0.5 1.2 0.1 0.0 0.0 3.4 1.2 0.3 1.3 1.9 1.3 0.4 0.9 1.0 5.1 5.7 0.2 0.2 1.8 28.9 P. pentosaceus FAM20650 2.2 0.0 0.0 0.5 1.0 0.2 0.0 0.1 3.0 1.0 0.3 1.2 1.8 1.1 0.3 0.7 0.9 5.9 5.6 0.2 0.2 1.6 27.9 P. pentosaceus DSM 20336 2.3 0.1 0.0 0.6 1.1 0.1 0.0 0.0 3.3 1.1 0.3 1.3 1.9 1.3 0.4 0.9 0.9 5.5 5.7 0.2 0.2 1.7 28.9 Basal broth 2.0 0.0 0.6 0.5 0.9 0.1 0.0 0.1 2.8 0.9 0.2 0.9 1.6 0.9 0.3 0.1 0.8 5.3 5.0 0.2 0.2 1.3 24.6 Experiment_2 Species/ Broth Strain Alanine AABA Arginine Asparagine Aspartate Citrulline GABA Glutamin Glutamate Glycine Histidine Isoleucine Leucine Lysine Methionine Ornithine Phenylalanine Serine Threonine Tryptophan Tyrosine Valine Total FAA P. acidilactici FAM13473 5.3 4.8 0.0 0.5 1.0 0.4 0.1 0.0 3.0 1.1 0.3 1.1 1.7 1.2 0.3 0.5 0.6 2.2 0.8 0.1 0.1 1.7 26.9 P. acidilactici FAM13881 2.7 1.8 0.0 0.5 0.9 0.3 0.0 0.0 2.6 0.9 0.3 0.9 1.4 0.9 0.3 0.3 0.7 3.4 2.6 0.1 0.1 1.4 22.2 P. acidilactici FAM17411 6.7 5.8 0.0 0.6 1.0 0.1 0.1 0.0 3.1 1.2 0.3 1.2 1.8 1.2 0.3 0.8 0.8 1.2 0.2 0.1 0.2 1.8 28.4 P. acidilactici FAM17418 5.1 4.7 0.0 0.6 1.0 0.1 0.1 0.1 3.0 1.1 0.3 1.2 1.8 1.1 0.3 0.7 0.8 2.6 1.1 0.1 0.2 1.8 27.7 P. acidilactici FAM17422 7.2 6.0 0.0 0.6 1.1 0.1 0.1 0.0 3.2 1.2 0.3 1.2 1.9 1.3 0.3 0.9 0.7 0.7 0.1 0.1 0.2 1.8 29.1 P. acidilactici DSM 20082 5.3 4.7 0.0 0.5 1.2 0.1 0.1 0.0 3.1 1.1 0.3 1.2 1.8 1.2 0.3 0.9 0.3 2.0 0.5 0.1 0.1 1.7 26.5 P. acidilactici FAM18098 7.1 5.6 0.0 0.5 1.0 0.1 0.1 0.0 3.0 1.1 0.3 1.1 1.7 1.1 0.3 0.8 0.6 0.3 0.0 0.1 0.1 1.7 26.7 P. acidilactici FAM18987 3.4 1.7 0.0 0.4 1.2 0.2 0.1 0.0 3.1 1.2 0.3 1.2 1.8 1.2 0.3 0.9 0.6 3.8 3.4 0.1 0.2 1.7 26.9 P. acidilactici FAM19460 6.8 5.5 0.0 0.5 1.1 0.1 0.1 0.0 3.0 1.1 0.3 1.1 1.7 1.1 0.3 0.6 0.6 0.2 0.0 0.1 0.1 1.6 26.0 P. acidilactici FAM20559 7.4 5.7 0.0 0.5 1.1 0.3 0.1 0.0 3.1 1.1 0.3 1.1 1.7 1.2 0.3 0.5 0.7 0.3 0.0 0.1 0.2 1.7 27.4 P. pentosaceus FAM13073 2.2 0.1 0.0 0.5 1.0 0.0 0.1 0.0 3.0 1.0 0.3 1.1 1.7 1.1 0.3 0.8 0.9 4.9 5.0 0.1 0.2 1.7 26.2 P. pentosaceus FAM17622 2.2 0.0 0.0 0.5 1.0 0.3 0.1 0.1 3.0 1.1 0.3 1.1 1.8 1.1 0.3 0.6 0.9 5.7 5.2 0.1 0.2 1.7 27.3 P. pentosaceus FAM18813 2.2 0.1 0.0 0.5 1.2 0.1 0.1 0.0 3.2 1.2 0.3 1.2 1.8 1.4 0.3 0.9 0.9 5.2 5.4 0.1 0.2 1.8 28.2 P. pentosaceus FAM19080 2.2 0.1 0.0 0.5 1.0 0.1 0.1 0.1 3.0 1.1 0.3 1.1 1.7 1.2 0.3 0.8 0.9 5.6 5.1 0.1 0.2 1.7 27.0 P. pentosaceus FAM19132 2.2 0.1 0.0 0.5 1.1 0.1 0.1 0.0 3.1 1.1 0.3 1.2 1.8 1.2 0.3 0.8 0.9 4.9 5.3 0.1 0.2 1.7 26.9 P. pentosaceus FAM19144 2.3 0.1 0.0 0.6 1.0 0.2 0.1 0.0 3.2 1.1 0.3 1.2 1.8 1.2 0.3 0.8 0.9 5.9 5.5 0.1 0.2 1.8 28.6 P. pentosaceus FAM19169 2.2 0.1 0.0 0.5 1.1 0.1 0.1 0.0 3.1 1.1 0.3 1.2 1.7 1.3 0.3 0.8 0.9 4.7 5.2 0.1 0.2 1.7 26.7 P. pentosaceus FAM20650 2.2 0.0 0.0 0.5 1.0 0.3 0.1 0.1 3.0 1.0 0.3 1.1 1.8 1.1 0.3 0.6 0.9 5.9 5.5 0.1 0.2 1.7 27.7 P. pentosaceus DSM 20336 2.1 0.1 0.0 0.5 1.0 0.1 0.1 0.0 3.0 1.0 0.3 1.1 1.7 1.1 0.3 0.7 0.8 5.0 5.1 0.1 0.2 1.6 26.0 Basal broth 2.2 0.0 0.7 0.6 1.0 0.1 0.1 0.1 3.1 1.0 0.3 1.0 1.7 1.0 0.3 0.1 0.9 5.9 5.5 0.1 0.2 1.4 27.0