Conclusion Lab Unit 10 - Antibiotics and Antimicrobials

Conclusion Lab Unit 10 - Antibiotics and Antimicrobials -...

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Conclusion Lab Unit 10 - Antibiotics and Antimicrobials Levine 1 Alexis Levine Dr. Maxwell T/R 4, April 2010 This week in lab we studied the effects antimicrobials and antibiotics have on bacterial cultures. Antimicrobial susceptibility testing is when a microorganism is inaccessible from a patient. The Kirby-Bauer method is used to qualitatively determine the susceptibility of a given bacterial strain to a battery of antimicrobial drugs. If the microorganisms are receptive to a specific antibiotic, there is a zone of inhibition. If the bacteria are sensitive to the antibiotic, they will not grow near the disk. The size of the zone is relative to how sensitive the organism is. If the organism is resistant to the antibiotic, there will be growth right next to the disk (Vanhoeck, 2004). For our antiseptic agars we used 70% ethanol, which is a volatile , flammable , colorless liquid. It is a powerful psychoactive drug . Glycerol has three hydrophilic hydroxyl sets that are accountable for its solubility in water and its hygroscopic nature. The glycerol foundation is the innermost part of countless lipids . Glycerol is sweet tasting and of little toxicity. Then we had three disinfectants, the first being Lysol, which is an antimicrobial agent that is useful to non-living substances to annihilate microorganisms. It usually can kill up to 99% of germs. We also had bleach, which is a chemical that removes colors often through corrosion. Many types of bleach have strong bactericidal components, and are used for disinfecting and sterilizing. Our next disinfectant was
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This note was uploaded on 04/10/2011 for the course BIOLOGY 2300 taught by Professor Staff during the Fall '10 term at Georgia State University, Atlanta.

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Conclusion Lab Unit 10 - Antibiotics and Antimicrobials -...

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