Morphological And Cultural Characteristics Of The...

Unknown #462 obtained from the patient was identified as Staphyloccus epidermidis. The results from the various performed to determine the morphological and cultural characteristics, along with oxidative, fermentation, degradative and hydrolysis reactions strongly supported the identity of the unknown as S. epidermidis. The results from the Biolog Microbial ID further confirmed the unknown was S. epidermidis with a probability of 99.2%. However, a few of the results observed deviated from the expected characteristics of the proposed identity of the bacterium as S. epidermidis. Test for salt tolerance, fermentation of glucose and lactose, and sensitivity to Vancomycin deviated from the expected results for the microorganism S. epidermidis. All other results obtained from other test performed on Unknown #462 were expected for the proposed identity of the bacterial organism such as inability to ferment mannitol, the ability to use the enzyme urease to make ammonia, and its inability to hydrolyze starch. Results for fermentation of glucose and lactose using Durham tubes was observed to be negative. A negative results indicated that the bacterium was unable to use lactose or glucose as a source of energy. However, the expected results for fermentation by S. epidermidis is positive for both fermentations of glucose and lactose7. The conflicting results may be due to the fact the Durham tubes needed to incubated longer in order to observe the color change. Also, the inoculatingShow MoreRelatedUnderstanding The Nature Of Bacteria Are The Smallest And Most Versatile Independent Living Organism1010 Words   |  5 PagesBacteria are the smallest and most versatile independent living organism commonly known today. 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