1900s to regulate the growth in batch culture of Saccharomyces cerevisiae18. Yeast producers observed that in the presence of high concentrations of malt‚ a by-product - ethanol - was produced‚ while in low concentrations of malt‚ the yeast growth was restricted. The problem was then solved by a controlled feeding regime‚ so that yeast growth remained substrate limited13. The concept was then extended to the production of other products‚ such as some enzymes‚ antibiotics‚ growth hormones‚ microbial
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Abstract In this experiment‚ Escherichia coli is used as a sample to study the growth kinetic of microorganism in shake flask. A different volume of E.coli was transferred into 250ml Erlenmeyer/shake flask containing media for the nutrient of microorganism. The different volume of microorganism transferred will give the different effect of reading on the constant volume of media used. There are three ways to test the growth kinetic rate of microorganism on shake flask‚ which are by optical density (OD)
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2. Why Choose Microalgae culture or Microalgae as an Ideal biomass? Or Microalgae: advantages and disadvantages The microalgae culture have the infinite potential to be used as primary producers of biomass in coming years‚ eventually they will turn out to be as most significant energy source. They can act as feedstock for several types of renewable fuels such as ethanol‚ methanol‚ biodiesel‚ methane and hydrogen. Table 1 represents certain feedstocks used for biofuel production (Chisti 2007; Dominguez-Faus
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Study of Bacterial Growth and Resistance Level to Certain Antibiotics INTRODUCTION Escherichia coli—better known as E. coli—is a gram negative‚ rod shaped bacteria. It is relatively harmless‚ but can occasionally cause food poisoning. It can also provide Vitamin K2. It prevents the establishment of pathogenic bacteria‚ and is associated with or found in the intestinal organ. The antibiotic that E. coli is resistant to is Penicillin. Bacillus subtilis—better known as B. subtilis—is known as
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The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic‚ measuring 1 micron in length. However‚ colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more
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Introduction: Bacteria need specific living conditions to survive. The ideal conditions for bacterial growth is a warm‚ dark‚ and damp environment. This provides the maximum effectiveness for bacterial growth. The areas in our school that contain the most bacteria would be the water fountains because the bacteria from our mouths drop off on to it when we drink from it‚ and because water fountains are not regularly washed in comparison to weight equipment. Water fountains also provide a warm damp
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Name Lab‚ Week # 3 Experiment : BACTERIAL GROWTH AND CONTROLLING BACTERIAL GROWTH Introduction <Include purpose of lab experiment> <brief summary of topic investigating and case studies > <state major finding> Procedure < Include information that the reader would need to repeat your experimental procedure. Do not include any observations or results in this section> Observations and Results Part I: Bacterial Growth Result + or - Appearance after Incubation Gram Stain N/A OF Glucose Broth
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MICROBIOLOGY COURSEWORK The effect of antibiotic concentration on bacterial growth Introduction Null Hypothesis- Increasing the antibiotic concentration has no effect on bacterial growth. Experimental Hypothesis- Increasing the antibiotic concentration decreases bacterial growth. Scientific Theory Bacteria are prokaryotes and can be identified by their shape. Spherical bacteria are called cocci‚ rod shaped bacteria are called bacilli‚ spiral shaped bacteria are called spirilla and
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Effects of Music on Bacterial Growth Kira Lewitt and Kaitlyn Carroll December 2014 Chemistry 1B Grady High School Table of Contents 1. Introduction 2. Materials/ Method/ Procedure 3. Data/ Observations 4. Discussion of Results 5. Conclusion 6. Practical Application 7. Future Expansion 9. Bibliography Introduction Question: What genre of music affects the growth of bacteria the most
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MIC Practical Report Kerry Haarhoff 18 April 2012 3150540 Introduction Bacteria and fungi are both micro-organisms‚ however‚ fungi are spore-producing organisms whereas bacteria are not and fungi can be multicellular and bacteria is only a unicellular organism. These 2 micro-organisms‚ along with many other things circulate in the air within our environment. These micro-organisms then settle and become more prevalent in different areas. An experiment was conducted to see where
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