ABSTRACT
Contents 5.1 e Taxonomic Unit Defined ........................................................................................... 77 5.2 Typical Ecological Niches ................................................................................................ 78 5.3 Lactobacilli in Food and Feed .......................................................................................... 79 5.4 Metabolic Characteristics ................................................................................................. 79
5.4.1 Carbohydrate Metabolism .................................................................................... 79 5.4.1.1 Sugar Transport ...................................................................................... 79 5.4.1.2 Sugar Fermentation ................................................................................ 80
5.4.2 Alternative Pyruvate Metabolism, Diacetyl Formation ......................................... 80 5.4.3 Proteolytic System and Peptide Utilization ............................................................81
