FOS4222 - Exam 3 Study Guide - 6 Escherichia coli serovars and defining traits (2)

FOS4222 - Exam 3 Study Guide - 6 Escherichia coli serovars and defining traits (2)

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Organism Listeria Escherichia coli Vibrios Salmonella Virulent Strain/Serovar monocytogenes and ivanovii O157:H7 cholerae, vulnificus, parahaemolyticus typhii and enteritica Media UVM broth, Frasier broth, and MOX agar MacConkey Agar TCBS, m-CPC, Blood agar XLD and TSI Lethal Dose above 100 CFU/g Approx 100 cells! 10^11 in healthy 10^6 in compromised 10^6 Secretion n/a Type 3 Secretion Type 2 Secretion Type 3 Secretion Foods Raw plants, raw meat products is origin Ground beef, salad bars, swimming H2O Seafood, oysters, shrimp, clams Eggs, poultry, OJ, dairy Special Survives 30% NaCl, nitrites, and -18C freezing P2P Transmission is HUGE, invades colon Loves iron, hallmark water rice stools Peyer's Patches, M cells
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Unformatted text preview: Acid Tolerance Dies below 4.5 pH 3 Tolerance Systems - Lives Well Neutral pH - ie peptone broth Range of 4-9.5 pH (optimal ~7) Temperature Range Psychrotroph Greater than 44.5C (68.3 KEY) Like warm water months April - Sept. 2C-54C (optimal at 37) Control Bacteriocins, pedocin, nicin, irradiation Antibiotics, sanitation, irradiation Fluids, for Cholera Prophylatic antibiotics Enterobacter sakazakii Genus: cronobacter (1 of 6) Peptone Agar less than or equal 3.2/100g n/a Powder infant formula 50% death rate Neutral pH - ie peptone broth 4D reduction in H2O greater than 70C Antibiotics (if not resistant strain)...
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FOS4222 - Exam 3 Study Guide - 6 Escherichia coli serovars and defining traits (2)

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