Escherichia coli

conducted by Surjawidjaja et al. (2003) showed that Zn-sulfate at concentrations between 1.2 and 1.8 mg/ml inhibited the growth in enteric pathogens commonly associated with diarrheal disease (Salmonella typhi, Salmonella groups A, B, C, D and E, Escherichia coli, Enterobacter, Shigella and Vibrio cholera). Our results seem to indicate that Giardia is more sensitive to Zn than these enteric…

shelf life of foods by modifying the physiochemical and biological properties of the food (Martin et al. 2009). Polyphenol (or catechins) extracted from green tea extract have shown an excellent antimicrobial effect against Bacillus Subtilis, Escherichia Coli, Proteus Vulgaris, Pseudomonas Fluorescents, Salmonella sp. and Staphylococcus Aureus (Bancirova 2010). Among all the catechins, epigallocatechin-3-gallate (EGCG) and…

Escherichia coli (E. coli) is a rod-shaped, gram negative bacteria that is part of the normal bacterial flora of the human intestine. These particular strains are not pathogenic, however other strains can cause food poisoning if consumed. E. coli’s entire genome has been sequenced and the genes it codes for are relatively well known.1 E. coli DNA is in the form of a plasmid which is circular DNA. Plasmids are easy to manipulate, self-replicating, stable, and applicable to various organisms due…

the 5 isolates. To examine the antimicrobial activity of those isolates, in vitro inhibition by cross streak assay was performed, in cross streak method all the 5 isolates were able to inhibit the growth of Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 8739), Salmonella enterica (NCTC 6017), and Bacillus cereus. Previous studies also revealed…

that act as an inhibitory agent towards gram-positive microorganisms and neutral red is added to serve as a pH indicator, microorganisms lower the pH which results in the colonies turning red. Some of the organisms that grow on this medium are: Escherichia coli ,Enterobacter aerogenes and Enterococcus.Lactose-fermenting organisms appear as pink or red colonies , E.coli appear pink or red, E.aerogenes appear pink in colour ,Enterococcus appear rose in colour and the colour are pin point in…

Joshua Yran P. Professor Cynthia Solem English 1A 05 December 2014 How E. Coli Can Make Us Die A 4-year-old Oregon girl has died from medical complications possibly resulting from an E. coli infection contracted sometime just before Labor Day weekend, according to the girl’s uncle, who spoke with Food Safety News. Serena Profitt of Otis, OR, died Monday at Doernbecher Children’s Hospital in Portland. Her symptoms of E. coli infection first appeared around Aug. 29 with bouts of diarrhea, said…

tested was that if the incubation temperature of Escherichia coli is lower or higher than 37°C, the amount of bacterial growth will decrease. The results of the plates which experienced growth without contamination supported the hypothesis. The plate incubated at 4°C was contaminated, and therefore the E. coli colonies present on the plate, if any, could not be counted. The plate incubated at 23°C had no growth, which supported the hypothesis that if E. coli was incubated at temperatures higher…

aureus), Acinetobacter calcoaceticus-baumannii complex, Pseudomonas aeruginosa, klebsiella pneumonia , Escherichia coli ( E.coli), Enterococcus, Burkholderia, Enterobacter, Proteus, coagulase negative staphylococci ( S.epidermidis, S. saprophytic). Although most of gram–ve bacilli can’t remain in dry surfaces and sensitive to common disinfectant, Acinetobacter…

INTRODUCTION Microbes are those microscopic organisms that can cause diseases in the human body. These microbes migrate with locomotive organelles called FLAGELLA, a very vigorous nanomotor that is highly conserved across bacterial species. Flagella allow the microbes to move towards favourable environments. Further studies on flagella has revealed that it not only serves the purpose of locomotion but also plays a very crucial role in bacterial pathogenicity(14). A flagella has mainly three…

Sulfur not reduced. 5a. Lactose fermented. 6a. Sucrose fermented. 7a. Ornithine decarboxylase present……Enterobacter aerogenes 7b. Ornithine decarboxylase not present…….Klebsiella pneumonia 6b. Sucrose not fermented……………………………….Escherichia coli 5b. Lactose not fermented…………………………………….Serratia marcescens 1b. Glucose not fermented 8a. Glucose oxidized…………………………….........…………Pseudomonas aeruginosa 8b. Glucose not oxidized…………………………………………......Alcaligenes faecalis Test Question…