"Escherichia" Essays and Research Papers

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    Handwashing vs. Alcoholing

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    Is Hand Washing Enough to Stop the Spread of Disease? Sep. 8‚ 2010 — Not drying your hands thoroughly after washing them could increase the spread of bacteria‚ and rubbing your hands whilst using a conventional electric hand dryer could be a contributing factor‚ according to new research. Frequently people give up drying their hands and wipe them on their clothes instead‚ but hand-hygiene is a key part of infection control and drying hands after washing is a very important part of the process.

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    Isolation of Recombinant Taq Polymerase for PCR Isolation of Recombinant Escherichia coli IPTG induced Taq polymerase and characterization through polymerase chain reactions‚ Western Blotting and gel electrophoresis * Braeden Cowbrough1‚ Michael Atkins2‚ Christopher Bonner3 From the Faculty of Biochemistry Lab 3006 B Carleton University‚ Ottawa‚ ON K1S 5B6 *Running title: Isolation of Recombinant Taq Polymerase for PCR To whom correspondence should be addressed: Braeden Cowbrough‚ Faculty of Biochemistry

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    Activity Of Cannabis

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    antibiotics has been synthesized‚ which are in great demand. This present study has been done to determine the antibacterial activity of Cannabis sativa leaf extract to some selective pathogenic bacterial strains such as Staphylococcus aureus‚ Escherichia coli‚ Pseudomonas aeruginosa. Antibacterial activity if cannabis sativa was evaluated by well diffusion method. The highest zone

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    Antimicrobial Lab Report

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    Introduction: Chemical methods of control: Antimicrobial drugs‚ involves the use of chemicals to prevent and treat infectious diseases. Pasteur and others observed that infecting an animal with Pseudomonas aeruginosa protected the animal against Bacillus anthracis. Later‚ the word “antibiosis” (against life) for this inhibition and called the inhibiting substance “Antibiotic”. As researchers found out more and more about these chemicals they were able to discover that antibiotics are chemicals

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    Nutrient agar plates of a) Sarcina lutea and Serratia marcescens b) Bacillus subtilis and Escherichia coli c) Streptococcus fecalis and Pseudomonas fluoroscens 2. 24 hour pour plate preparation of a) Serratia marcescens b) Sarcina lutea c) Bacillus subtilis d) Escherichia coli 3. 24 hour agar slant of the following cultures incubated at 25ºC a) Bacillus subtilis b) Escherichia coli c) Serratia marcescens d) Pseudomonas fluoroscens 4. 48 hour nutrient broth cultures

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    Marry Brown

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    Introduction In this experiment‚ the growth of four cultures‚ which are Escherichia coli‚ Staphylococcus aureus‚ Saccharomyces cerevisiae (yeast) and Penicillum (mold) were examined under a range of acidic to alkaline environments to determine the pH requirements of the four species. By conducting this methodology‚ the range of acceptable pH limits‚ including the optimum pH for each organism‚ can be determined. The range of pH over which an organism grows is defined by three cardinal points: the minimum

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    Unknown Microorganism

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    Sarah Helms Thursday/ 11:15am #1 Escherichia coli There are many types of microorganisms and ways to treat each one. Knowing the differences of each is vital to treat a patient correctly. The purpose of this report is to explain the process and steps used to identify a certain microorganism referred to as the unknown. Materials and Methods A test tube with an unknown microorganism will be retrieved. Once the test tube is retrieved‚ a steak for isolation will be completed in order to produce

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    Urease Test‚ the Fermentation of Lactose Test‚ the Sulfide Indole Mobility (SIM) Test‚ the Nitrate Reduction Test‚ the Protein Hydrolysis Test‚ the Catalase Test‚ and the Cytochrome Oxidase Test. The microbes that were tested during this lab were: Escherichia coli‚ Bacillus cereus‚ the unknown‚ Proteus vulgaris‚ Staphylococcus epidermis‚ Enterobacter aerogenes‚ the control‚ and Pseudomonas fluorescens. The microbes tested during these various tests were looking for which would: reduce sulfur/produce

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    therrhrhr

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    gram negative and gram positive microorganisms. Materials: Microscope‚ Bunsen burner‚ glass slide pipette‚ loop‚ distilled water‚ nutrient agar of Escherichia coli‚ nutrient agar of Staphylococcus aureus‚ crystal violet‚ gram iodine‚ ethanol‚ safranine‚ oil immersion‚ a piece of napkin ‚ holder. Method: As per manual. Bacteria stained- Escherichia coli and Staphylococcus aureus. Results: Gram-negative bacteria are

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    absorbansi 0‚08 – 0‚13 untuk mendapatkan standar kerapatan bakteri pada 1 – 2 x 108 CFU/ml (EUCAST‚ 2009; Fransco et al.‚ 2006). 4.8.4 Pengujian Efek Antimikroba Pelaksanaan Uji efek natimikroba menggunakan metode difusi cakram Kirby Bauer. Suspensi Escherichia coli yang telah diukur kepadatannya di swab dengan menggunakan kapas lidi steril secraa mrata pada media MHA (Mueller Hinton Agar). Selanjutnya kertas cakram yang sceraa terpisah telah direndam ekstrak saun biji jambu merah dengan konsentrasi diletakkan

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