Figure 3From: The fast milk acidifying phenotype of Streptococcus thermophilus can be acquired by natural transformation of the genomic island encoding the cell-envelope proteinase PrtSMilk acidification kinetics of PrtS+ transformants. Milk acidification curves of parental strains and their respective PrtS+ derivatives for DGCC7891 (A), DGCC7666 (B), and LMG18311 (C). All experiments were realised in the reconstituted milk at 40°C.Back to article page