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Phenotypic characterization of Lactobacillus strains isolated from different biotopes
Abstract
belonged to group 3, which comprised L. brevis and L. fermentum. The variance analysis (with onefixed criterion classification) of the potential for milk coagulation after 6 and 24 h of growth made possible the characterization of two homogeneous groups, fast and low acidifying strains. The human strains showed a resistance to acidic pH and to bile, indicating a tolerance to gastric acid. The probiotic potential was confirmed for one strain, owing to its antagonistic effect on Escherichia coli.