"The yeast menace" Essays and Research Papers

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    LPOL

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    Beer is an alcoholic drink. It is brewed from barley grains‚ hops‚ sugar‚ yeast and water. The barley is turned to malt The taste comes from oils and resins in the hop flowers Wheat or millet can also be used to make beer It is an extremely old drink and has been made since before Roman times There are different types of beer. The different types are made by using different strains of the yeast Saccharomyces cerevisiae and by changing the fermentation process. Malting: Barley is soaked

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    decolourized during the respiration of yeast. By measuring the time taken for a fixed amount of the dye to be decolourized‚ the relative rate of respiration (a catabolic process) can be deduced. Results: The yeast mixture in test tube A turned blue at first but slowly changed back to its original colour and stayed that way. The yeast mixture in test tube B turned blue and remained unchanged. The yeast mixture in test tube A are alive‚ whereas the yeast mixture in test tube B are dead. Reactions:

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    Applied Mycology

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    sourdough biscuits and bread. This wild yeast based bread was later to become famous‚ for its slightly tart taste. The bread was created from what is called a starter‚ where wild yeast is allowed to grow to replace store bought yeast‚ I found in this lab that my home brewed yeast tasted fresher and made the waffle texture much airier. I also learned a lot about making the starter itself‚ like if you’re at a higher altitude then you use less flour to make the yeast grow‚ and that you can typically only

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    This strain of yeast is also referred to as brewer’s yeast. This yeast has a high alcohol tolerance and has the required enzymes to catalyse the reactions. (CraftBrewer‚ 2016) (Concentration of Sugar) The sugars we will be testing as stated above‚ are glucose‚ fructose‚ sucrose and lactose. This

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    Abstract The experiment aims to observe if simpler substrates makes the rate of cellular respiration faster. Using yeast‚ smith fermentation tubes and different substrates namely‚ starch‚ lactose‚ sucrose‚ glucose and fructose‚ which are from different kinds of carbohydrates‚ ranging from the simplest sugars glucose and fructose to the polysaccharide starch and water as the control‚ the hypothesis was tested. With the span of thirty minutes with five-minute intervals‚ the height of carbon dioxide

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    Biology Sba Sample

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    To determine what conditions make dough rises best Apparatus and materials Flour Yeast Warm water Sugar Mixing bowl Two (2) beakers Measuring cup Spoon Diagram of Apparatus Method 1. Take a measuring and measure 1 and ½ cups of warm water 2. Add yeast then sugar (this is used to activate the yeast. The yeast uses the sugar and water to create carbon dioxide and raise the bread) 2. Add the yeast mixture to the mixing bowl along with ¾ of flour 3. Mix the ingredients with a wooden

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    Fermentaion

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    TITLE NAME OF COMPANY ANCHOR YEAST DURBAN REPORT 3: OUTCOMES PRESENTED IN THE REPORT. 1. OUTCOME (I) : DEVELOPED DIAGNOSTIC TOOL FOR EFFICIENT OPERATION 2. OUTCOME (F): HAZARD AND OPERABILITY STUDY (HAZOP) 3. OUTCOME (P): PROBLEM SOLUTION TO A CUSTOMER REQUEST (TECHNICAL INVESTIGATION) DATE OF SUBMISSION DECLARATION PAGE By student: I hereby declare that the works done in this report has been solely done by me. Any work submitted from company sources

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    bio lab report

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    The Variation of Yeast Cells When Adding an Antibiotic Biology 1401- A October 21‚ 2013 Abstract. -- The main focus in this experiment was to find out if antibiotics affect yeast cells culture when added. The observation of the two cultures along with the yield of yeast cell reproduction between the two cultures was the sole purpose of the experiment; culture-A (- antibiotic) and culture-B (+ antibiotic). Our hypothesis stated whether antibiotic effects yeast cells cultures. This theory was

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    Perry making

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    is carried out by yeasts which have either been added deliberately or which are naturally present on the pear skins. This fermentation converts sugars to ethanol and the higher alcohols (fusel alcohols). The second fermentation‚ the malo-lactic fermentation converts L(-)-malic acid to L(+)-lactic acid and carbon dioxide. This fermentation is carried out by lactic acid bacteria which are present in the pear juice. The malo-lactic fermentation can occur concurrently with the yeast fermentation but more

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    Fermentation

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    ABSTRACT   The hypothesis which states that the simpler the nature of substrate‚ the faster the rate of cellular respiration of yeast was tested using the smith fermentation tube method. The experiment used six smith fermentation tubes‚ distilled water and sugar substrates. It composed of six set-ups which used 15ml of 10% yeast suspension‚ 15 ml distilled water and 15 ml of their assigned sugar substrate namely: starch‚ lactose‚ sucrose glucose and fructose respectively. Set-up six was the

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