Micrococcus luteus‚ Alcaligenes faecalis‚ Clostridium sporogenes‚ and Micrococcus roseus. There were several qualitative tests that could be conducted to determine the identity of the unknown species‚ for example‚ Gram staining‚ Fermentation‚ Catalase‚ Oxidase‚ Starch Hydrolysis‚ Litmus Milk‚ MOI medium‚ and the Gelatin Test. All tests and techniques used were performed in accordance with The Microbiology Lab Manual. Materials and Method: A stock broth culture of the two unknown species #72 was obtained
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Nicotine has been used since the 1800s for cultural activities and therapeutic effects. The American Indians used tobacco with nicotine as a powerful insecticide for seed protection and as a human vermifuge. The Shamans used high doses of nicotine to induce catatonic state intoxication which represented symbolic death. Due to the short half-life and quick elimination of nicotine‚ these people returned to full consciousness after a few hours. Nicotine is currently being tested for its medical therapeutic
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Unknown #1 Vomit Serratia marcescens & Bacillus cereus Biol 251 Microbiology 5/14/2009 Introduction The purpose of this study is to differentiate and identify two unknown organisms provided by the instructor in a nutrient broth. It is only known that the two organisms are from vomit; one is gram-positive and the other is gram-negative. It is necessary to first separate the two organisms by inoculating a nutrient agar plate using the streak-plate method. The
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oxidation‚ antioxidants. 1. Introduction Catechins are a type of antioxidant found in the greatest abundance in the leaves of the green tea. In smaller amounts‚ they are found in other foods such as red wine‚ chocolate‚ berries‚ and apples. Polyphenols are the main compounds of green tea and there is a class of polyphenolic flavonoids
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Introduction Although bacteria is microscopic in size‚ it is largely important in the healthcare field‚ environmental work‚ food preparation‚ as well as many other industries. In particular‚ it is essential that healthcare workers be able to identify the species of bacteria invading a human reservoir in order to prescribe the correct antibiotic that will kill that species. For the purpose of bacteria identification‚ numerous tests have been devised to find out the exact species in question. However
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of Sciences and Health‚ Dublin Institute of Technology‚ Cathal Brugha Street‚ Dublin 1‚ Ireland nissreen.abughannam@dit.ie Received: November 28th‚ 2010; Accepted: May 22nd‚ 2011 Vegetables belonging to the Brassicaceae family are rich in polyphenols‚ flavonoids and glucosinolates‚ and their hydrolysis products‚ which may have antibacterial‚ antioxidant and anticancer properties. In the present study‚ phenolic composition‚ antibacterial activity and antioxidant capacity of selected Brassica
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coagulase and the oxidase test. Observe microbial flora of the nose. Significance: Understand the use of Mannitol salt agar‚ blood agar and MacConkey agar plates which must be used based on the components of the bacteria. The catalase test will be used to understand the difference in facultative anaerobic and groam positive from aero tolerant anaerobes. The coagulase test converts fibrogen to fibrin‚ causing clotting‚ and is used to prevent phagocytosis of material. The oxidase test can be used
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properties and DNA sequencing as an existent or completely new and undiscovered species of Pseudomonas. Overview: Genus Pseudomonas is a chemoheterotrophic bacteria found in soil and water. They are Gram negative‚ motile‚ paired rods that are also oxidase-positive. Pseudomonas species are well known for their ability to metabolize many different organic nutrients‚ allowing them to be viable in multiple‚ diverse conditions. The Pseudomonas organisms had to initially be enriched from a soil sample
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effect. So chocoholics it’s time to feel less guilty about your choco-addiction! Chocolate which is rich in cocoa solids are now regarded as having the qualities that are beneficial to health. Cocoa is an excellent source of Polyphenols of the flavanol group. Polyphenols are very good antioxidants that destroys free radicals in a body. Free radicals are dangerous to a human body and can cause some serious diseases like cancer and heart diseases. Chocolates that are rich in flavanol have a large
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HOW TO WRITE AN UNKNOWN LAB REPORT IN MICROBIOLOGY GENERAL Unknown reports in microbiology are written in scientific format. Scientific writing is written differently from other types of writing. The results of the exercise or experiment are what are being showcased‚ not the writing. The purpose of scientific writing is not to entertain‚ but to inform. The writing should be simple and easy to understand. There is a specific style that must be followed when writing scientific reports.
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