1. INTRODUCTIONLactobacillus, one of the lactic acid bacteria, is a natural inhabitant in the gastrointestinal tract of man and animals (Conway et al., 1987) and an important bacterium in the food industries of fermented dairy, meat, and vegetable, and also in animal feed (Chassy, 1985; Lee, 1996). In addition, it is believed to offer some benefits as probiotics in human health, such as detoxify..
