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Protozoa helps Salmonella survive chemical cleaning |
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Aided by a common protozoa, Salmonella cells are three times likely to survive the treatments used by food processors to clean equipment, according to a scientific study. |
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Bacillus cereus is a Gram-positive rod. It is a motile, spore-forming, facultatively anaerobic rod. |
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Bacillus licheniformis is a Gram-positive, motile, spore-forming, facultatively anaerobic rod. |
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Bacillus subtilis is a Gram-positive rod. It is spore-forming, motile and is an obligate aerobe (although in anaerobic conditions in complex media containing glucose, weak growth and fermentation can occur). |
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Brochothrix thermosphacta |
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Brochothrix thermosphacta is a Gram-positive rod, non-sporing, non motile and is a facultative anaerobe. |
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Aeromonas hydrophila is a Gram-negative rod. It is motile, non-sporing and facultatively anaerobic. |
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Campylobacter jejuni is a Gram-negative, non-spore-forming, motile helical rod. It is microaerophilic. |
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Clostridium botulinum is a Gram-positive rod. It is motile, spore-forming and an obligate anaerobe. |
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Clostridium perfringens is a Gram-positive, spore forming rod. It is an obligate anaerobe and is non-motile. |
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“Although a few bacteria are so morphologically remarkable as to make them identifiable without isolation, pure cultures are nearly always a necessity before one can attempt identification of an organism. It is important to realize that the single selection of a colony from a plate does not assure purity.”Bergey’s Manual of Systemic Bacteriology, vol. I |
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Differentiating Gram-negative and Gram-positive Bacteria |
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The Gram-Stain is the single most common and cost effective staining technique used in identifying bacterial organisms. The method was originally devised in 1884 by a Danish bacteriologist, Hans Christian Gram. |
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