Microbiology

re-occurring. The first one is by improving the areas of infection control, written protocols, and appropriate training in the sterile technique to ensure a good practice. Other than that, designing the optimal sink design requirement for clinical microbiology laboratories to reduce transmission and infection at the sink. The last one is by using dry paper towels to turn off faucets after hand-wash and install the knee or foot controlled sink in laboratories handling moderate to high-risk…

Title: Which Antibiotics Kill the Most Bacteria? Caroline Gorman April 2, 2016 HB bl. 6 Purpose: The purpose of this lab was to determine which of five common antibiotics would kill the Rhodococcus rhodochrous bacteria. Hypothesis: Out of the five tested antibiotics, doxycycline will kill the most Rhodococcus rhodochrous because it is generally used to treat mild infections. This will be tested by spreading the bacteria on agar in a Petri dish and adding a small amount of each antibiotic…

INTRODUCTION Being able to identify an unknown specimen in microbiology is vital in the laboratory. The goal of this experiment was to isolate bacteria on a nutrient agar (NA) plate to obtain pure colonies of the unknown specimen. This study was done by applying the methods learned in Professor Sprenkles microbiology lab in determining the unknown bacterial growth present with use of pure culture colony morphology, cell morphology and arrangement, and Gram reaction. MATERIALS AND METHODS The…

The Nisin Bacteriocin Introduction Nisin is a bacteriosin peptide made up of 34 amino acid residues that contain uncommon amino acids such as lanthionine and didehydroalanine. It is a substance produced by both gram positive and gram negative bacteria to control the growth of other bacteria species to reduce competition for substrate and space. Nisin has received attention from researchers making it the most exploited bacteriosin (Shetty, Pometto and Levin, 2006). The attention from…

way. In the same manner, all the knowledge I learned from Microbiology class and laboratory sessions regarding microbial world equipped me to identify bacterial unknowns from a clinical sample. The task was to successfully separate and accurately identify two bacteria of a specimen taken from an abscess to safely and effectively treat the patient. A clinical sample # 76 was handed over by the professor with a microbiology requisition. Requisition stated that the source of the…

clearing would appear around the disk containing the antibiotic. The diameter of this circle was then measured and compared with a table found on page 95 of the Microbiology Lab Manual to understand the antibiotics resistance, intermediate and sensitive levels, as they differ for each antibiotic. The numbers on the table in the Microbiology Lab Manual represented whether the microbe was resistant, shown in the light blue color on the graph, intermediate, shown in purple, or sensitive to the…

I walk down a narrow hallway into the microbiology laboratory on my college campus. I am met outside of the door by the professor. He proceeds to set the guidelines for proper safety in the lab. The number one thing he says and repeats is the concept of asepsis or the absence of microorganisms. After I finally get the okay to walk through the door, ditching my things there as I continue into the lab. Sanitization of your hands and the lab bench are the priority, immediately followed by placing…

Bacterial community of some waste dumpsites in Lagos, Nigeria Moro, D.D.1, Bello, H.A.2 and Akano, S.O.3 1. Department of Microbiology, Lagos State University, Ojo, Lagos State, Nigeria. 2. Department of Science Technology,Gateway Polytechnic, Igbesa, Ogun State, Nigeria. 3. Department of Medical Microbiology, Olabisi Onabanjo University, Sagamu, Ogun State, Nigeria. ABSTRACT Bacteriological…

To determine the unknown’s morphology is the first step in narrowing down possible organisms. A MacConkey and Mannitol Salt Agar tests were conducted on the organism and revealed the following. No growth on the MacConkey plate resulting in a gram positive bacteria and the Mannitol Salt Agar result showed it could be Staphylococcus or Micrococcus. (1) A gram stain test was used in determining the shape, size and arrangement of the unknown bacteria (1). The unknown organism is heat fixed onto the…

‘Revenge of the microbes’ by Abigail A. Salyer and co-author Dixie D. Whitt are both professors in the department of Microbiology at the University of Illinois. After thorough research by the professors, this great piece was published. This masterpiece, happens to be a reliable source for mere educative information about the microbiological world we find ourselves in but it could also be used as a good source for rich information about the activities of microbes and the role they play in our…