soil microorganisms‚ particularly B. methylotrophicus-SCS2012 exhibited strong antibacterial activity against Streptococcus agalactae‚ Bacillus cereus‚ Escherichia coli‚ Shigella sonnei and Shigella dysenteriae with the zone of inhibition range 28.33 to 32.16 mm at 100μg/disc. Minimum inhibitory concentration (MIC) of the extract against Streptococcus agalactae‚ Bacillus cereus‚ Escherichia coli‚ Shigella sonnei and Shigella dysenteriae was found to be 156‚ 156‚ 312‚ 312 and 625μg/ml respectively.
Premium Bacteria Escherichia coli Microbiology
pathogenesis of enteric clostridial infection requires two factors; the presence of these microorganisms in the intestine and a change in the enteric microenvironment. C. perfringens is a Gram-positive‚ spore-forming‚ obligately anaerobic‚ non-motile bacillus and capable of toxin production. Materials and methods Case history: A male Maltese dog‚ weighing 2.04 kg‚ was died on the way to the animal hospital with clinical signs of weakness‚ large volume of bloody diarrhea but no vomit. The previous day
Premium Bacteria Immune system Microbiology
Chapter 1 Cell Theory- in the 18th century‚ two scientists came up with the cell theory. Schleiden and Schwen. 3 corollaries of the cell theory: -all cells are alike in chemical composition -all cells store and process information in the same way -all cells arise from other cell through cell division 5 types of different Microscopes 1. Light Microscope- produces 2-D image Direct descendants of Hooks scope> take two lenses to a light source> used this to magnify images up to 1‚000 fold.
Premium Cell Atom Bacteria
MICROBES AND FOOD – A ‘RELATIONSHIP’ Microbes and food have always had a love-hate relationship. Food producers have learned to harness their power -- and sometimes for good use. There is no doubt that organically grown fruits and vegetables are superior in flavor. Now‚ despite arguments to the contrary made by food manufacturers‚ they may well be more nutritious for a variety of reasons. There are always studies available to prove any point‚ especially one
Premium Bacteria Yeast Lactobacillus
(living can only arise from preexisting living) Pasteur ¡V air contained‚ but did not produce‚ microbes (broth‚ s-flasks); pasteurization; lose virility‚ still immunity Lister ¡V aseptic surgery (phenol on surgical wounds) Koch ¡V cause of anthrax (Bacillus anthracis) ¡V bacteria in blood‚ injected into healthy‚ died‚ compared bacteria Jenner ¡V vaccines (cowpox provided immunity against small pox) ¡V milk maids Erlich ¡V ¡§magic bullet¡¨; salvarsan against syphilis Fleming ¡V Penicillium chrysogenum
Premium Bacteria Cell membrane
Proteus Vulgaris Proteus vulgaris is a gram negative‚ facultatively anaerobic‚ bacillus rodchemoheterotroph bacterium belongs to the family Enterobacteriaceae. It possesses peritrichous flagella‚ making it actively motile. P.vulgaris occurs naturally the intestional tracts of humans and animals‚ soil‚ fecal matter‚ polluted water‚ and raw meat. It is grouped with the enterobacteriacea and is an opportunistic pathogen of humans. In humans P.vulgaris is known to cause urinary tract
Premium
A bacteriophage (informally‚ phage) is a virus that infects and replicates within bacteria. The term is derived from ’bacteria’ and the Greek φαγεῖν phagein "to devour". Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome‚ and may have relatively simple or elaborate structures. Their genomes may encode as few as four genes‚ and as many as hundreds of genes. Phage replicate within bacteria following the injection of their genome into the cytoplasm. Bacteriophage are among
Premium Virus Bacteria Microbiology
Abstract Introduction An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria‚ fungi‚ or protozoans (Antimicrobial). Antimicrobial drugs either kill microbes or prevent the growth of microbes. Disinfectants are antimicrobial substances used on non-living objects or outside the body. Ginger Figure 1 : Ginger (Studies Reveal Ginger Lowers Colon Cancer Risk) Ginger is commonly used around the world and has been employed in the treatment‚ cure‚ and
Premium Antimicrobial Bacteria Petri dish
tests were performed. The biochemical tests were chosen from the unknown identification tables and dichotomous keys that were given in the lab manual. Since unknown A was determined to be a Gram positive rod and an endospore producer‚ the genus Bacillus was then concluded. Unknown A bacteria was then inoculated into a lactose fermentation broth tube and a mannitol fermentation broth tube for further testing of the species. Note‚ all of these tests were performed by the methods listed in the lab
Premium Bacteria Microbiology Gram staining
Microbiology 197 Prepared Bacteria Gram Stains (F12) Materials required: * Microscope; clean and properly set up * Immersion oil * Lens paper * Lens cleaning fluid * Microscope drawing forms * Specimens: 1. Bacillus subtilis 2. Staphylococcus aureus. 3. Escherichia coli Procedure: 1. Observe each of slides listed in “Specimens” above. 2. Make your observations using oil immersion (1000X). 3. Using a drawing form draw the organisms
Premium Staining Gram staining Bacteria