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Kroger Greek Vanilla Yogurt As Lactobacillus Casei

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Identification of Unknown “ ” in Kroger Greek Vanilla Yogurt as Lactobacillus casei
Joanne Li
University of Kansas, Biol 203, Spring 2017, 3:00 pm room 6044”
Abstract
The purpose of this experiment is to identify yogurt unknown by analyzing the result of its gram staining, and the 6 tubes of test media that was inoculated. The yogurt chosen to be used in this lab meets the minimum number of lactic acid bacteria to bear the seal of “Live & Active Cultures,” which mean they have at least 10^8 colony-forming units(CFU) per gram to quality. Unknown “ ” is Gram positive, rod-shaped, and use salicin, galactose, sucrose, mannitol, and mannose for fermentation. The characteristics of the result suggest that the unknown “ ” can be identified as Lactobacillus casei.
Introduction
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Its benefits trace way back before microbes were even discovered. Scientists of the early ages like Hippocrates considered fermented milk to be a medicine, they prescribe sour milk for curing stomach and intestinal disorders (1). Yogurt contains healthy bacteria, known as probiotics, it is good for the body by keeping the digestive and immune system functioning well. More and more people include yogurt as part of their diet knowing all of its possible health benefits. For examples, yogurt may reduce the risk of high blood pressure, help prevent osteoporosis, boost the immune system and promote a healthy digestive tract
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