the end of presentation learner will be able * Introduction of control of microbial growth * Define term related to control of microbial growth * Describe physical method of microbial growth * Control of Microbial Growth Control of Microbial Growth: Introduction * Early civilizations practiced salting‚ smoking‚ pickling‚ drying‚ and exposure of food and clothing to sunlight to control microbial growth. * Use of spices in cooking was to mask taste of spoiled food
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Microbial Growth of Consumable Products By Bryce Wilmott AIM: To calculate the quantity of observable microbial colonies on the surface of the Agar solid‚ as to determine the presence of microbes in consumable products i.e. yoghurt and blue vein cheese. HYPOTHESIS: Microbial growth will be present in two of the three Agar plates (those containing the food product) due to the suspected presence of microbes‚ whilst the control Agar plate (containing no food products)
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Year 12 Nutrition Stage 2 SACE: Practical – Manipulation of Microbial Growth | August 25 2013 Hypothesis: The hypothesis for this particular practical experiment is that‚ as the pH decreases or increases from neutral pH of approximately 7‚ the amount of microbial growth on the agar solution will decrease Materials: Agar Solution Preparation: *hand sanitizer/ hand wash soap *small container *1g of agar powder *0.25g of beef extract stock *60mL of heated water *electronic balance *small
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pH and Microbial Growth Introduction: Each organism has an optimum environment for growth‚ which includes pH level. Organisms that grow at near neutral pH levels are called neutrophiles. Those that grow best in acidic pH values are called acidophiles. Others‚ yet‚ grow best in alkaline pH values and are called alkaliphiles. In this lab‚ each group was assigned an organism‚ which was then used to inoculate 6 different pH levels. Materials and Methods: Followed lab procedure 29‚ “pH and
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different analysis; microscopy‚ soil microbiology and bacterial growth. The main aim of laboratory work with Escherichia coli and soil sample was to introduce students to bacterial growth in pure culture and soil microbial flora. The experiment of bacterial growth in pure culture using optical density measurement‚ plate count and DAPI direct count‚ showed that Plate Spread method was more precise to understand bacterial population growth tendency and counting generation time. During laboratory work
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David Kennedy Bio 210 Lab Report 1 10/11/13 Microbial Growth Background Information: This lab was conducted in order to understand basic differences among differential and selective media‚ while recognizing how each media is used to isolate and identify microorganisms (Wistreich‚ 2003). The first microorganism analyzed was Staphylococcus epidermidis. This organism is gram-positive‚ single celled‚ arranged in grape-like clusters‚ and cocci in shape (Bukhari‚ 2004). S. epidermidis is approximately
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PROCEDURE: Part A (Effect of temperature on growth) 1) 15 tubes of glucose broth are provided and one set of 3 tubes are inoculated with each of the following cultures; Escherichia coli‚ Pseudomonas fluorescens‚ Micrococcus luteus and Saccharomyces cerevisiae. The last served as control. 2) One of the three tube of each culture is incubated at each of the following temperature: * 4°C * 37°C * 55°C 3) All the tubes are incubated within 5 minutes after inoculating. The turbidity
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Nutritional Factors that Influence Microbial Growth To live/reproduce‚ all living things need: An energy source A source of Carbon Food Sunlight – phototroph Iron etc- chemotroph If reduced form of chemical‚ organism can use it as energy Organic-chemoorganotroph Inorganic – chemolithotroph Organic cmpds- heterotroph CO2- autotrophs Nitrogen fixation- make into organic form that humans can use N is often a limiting nutrient in the environment Meaning
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Effect of Osmotic Stress and Temperature on Microbial Growth BIO 3400-002L – Microbiology Lab 1 Effect of Osmotic Stress and Temperature on Microbial Growth Luiz Felipe Isidoro ABSTRACT Evolution allowed primitive forms of life to develop proteins and enzymes that made it possible for life to evolve under environments with hostile conditions‚ such as high salt and heat. More specifically‚ some bacteria selected genes that code for peptides with stronger intermolecular forces‚ coping
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POPULATION GROWTH AND CONTROL Population is considered to be an important asset for any country for growth rate of any country is greatly dependent on the people living in that country. But when it starts growing without any proper proportion then it becomes a menace for that part of part of the world. The whole world is caught in the trap of overpopulation .people all over the world are distributed like pollen or germinating seeds and they are growing in number as anything. There is an uneven
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