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
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(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
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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
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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
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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
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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
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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
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everywhere in the world. -Eubacteria have Peptidoglycan in their cell wall and no nucleus. -They are unicellular‚ but they can join together. -The three main shapes of Eubacteria are rod-shaped‚ spherical‚ spiral-shaped. Rod-shaped bacteria are called bacillus‚ spherical are called coccus‚ and spiral-shaped bacteria are called spirillum.-Eubacteria can be helpful or harmful. Some cause diseases‚ like strepthroat‚ while others help make food‚ like yogurt and cheese.-They create energy chemically either
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rhizosphere‚ on the rhizoplane or in the spaces between the cells of root cortex while iPGPRs locates generally inside the specialized nodular structures of root cells. The bacterial genera such as Agrobacterium‚ Arthrobacter‚ Azotobacter‚ Azospirillum‚ ‚ Bacillus‚Burkholderia‚Caulobacter‚Chromobacterium‚Erwinia‚Flavobacterium‚Micrococcous‚Pseudomonas and Serrata belongs to ePGPR.The iPGPR belongs to the family of Rhizobiaceae includes Allorhizobium‚Bradyrhizobium‚Mesorhizobium and Rhizobium.Plant growth
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Exercise 8-B Differential Staining Gram Staining and Acid Fast Staining Introduction: Differential Staining‚ one which facilitates differentiation of various elements in a specimen is a general term that can refer to a number of specific processes. Using multiple stains can better differentiate between different microorganisms or cellular components of a single organism. Gram’s Stain is a widely used method of staining bacteria as an aid to their identification. It was originally devised by Hans
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