For instance, some probiotic strains can improve host food digestion by metabolizing bile salt or complementing the functions of missing digestive enzymes Amara and Shibl, ; Shi et al. The genus Lactobacillus comprises a large heterogeneous group of Gram-positive, nonsporulating, facultative anaerobic bacteria which include L. This genus plays a very important role in food fermentation and can also be found in the GI system of humans and animals in variable amounts depending on the species, age of the host,[…]