Phenotypic and Genotypic Characterization of Probiotic Bacteria Isolated from Probiotic Dairy Products in the Philippines

Various beneficial microorganisms, most notably lactic acid bacteria, have evolved and adapted to live in symbiotic association between each other and in most regions of their host including the skin and the gastro– intestinal tract (GIT). The beneficial bacteria for health purposes for humans and animals are termed probiotic, literally “for life” (Hood & Zottola 1989). According to Salminen (1996), a probiotic is a live microbial culture or cultured dairy product that beneficially influences the health and nutrition of the host. Some of the best understood probiotic bacteria include members of the Lactobacillus and Bifidobacterium genera (Tannock 2005). Because of their ability to produce lactic acid as

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