on research and development have also become broader each day. Controversies have also emerged and one of the most discussed topics has been directed towards synthetic versus natural colorants. Food pigments are classified based on its origin or source; natural or synthetic. Synthetic food pigments are those substances that are needed to be tested for toxicity and allergenicity before
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Introduction: Hypothesis: My hypothesis for this experiment‚ the study of the effects of different wavelengths on leaf pigments‚ if chlorophyll a absorbs blue-violet light‚ chlorophyll b absorbs blue light‚ carotene absorbs blue-green light‚ and xanthophyll absorbs blue light‚ then wavelengths of greatest absorption will be 400‚ 450‚ 500‚ and 450 respectively. Independent Variable: Wavelengths Dependent Variable: optimum wavelengths of light for absorption Standard Variable: method of
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Component seeks to separate‚ identify‚ quantify and analyze the active component found in Biogesic®‚ which may be useful for public awareness despite its wide acceptance and availability in the market. Furthermore‚ this study applies thin layer chromatography (TLC) technique since it is the simplest‚ cheapest yet most effective approach in terms to the study’s objectives. The TLC method implies Rf (Rate of flow) values where it is given by the distance from origin to center of subtance spot over the
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LABORATORY REPORT Experiment 1: Gas Chromatography (GC): Optimization of Flow Rate and Column Temperature Name: AFIQ B. ANWAR Student No.: 2012621072 (AS2253A) Date of experiment: Date of report submission: Lecturer’s Name: PN. HALIZA Gas Chromatography (GC): Optimization of Flow Rate and Column Temperature INTRODUCTION The main purpose of the experiment is to investigate the effects of column temperature and flow rate on the separation of methyl esters compounds. On top
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Paper #2: Process Description Manual Transmission 10/08/2014 Introduction A large portion of the United States population find that driving a car with a manual transmission‚ or stick shift as it is commonly referred to‚ is incredibly difficult. However‚ all it actually takes is rigorous practice and absolute dedication before driving a stick shift becomes a habit. The main purpose of the manual transmission is to allow a vehicle to travel at high speeds with lower revolutions‚ but still have
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Thin Layer Chromatography of the Unknown Analgesic Jessica Bajao*‚ Phoebe Abalos‚ Kevin Antiga‚ Carmelus Aseneta 3-Biology 2 College of Science‚ University of Santo Tomas‚ Manila‚ Philippines Abstract The group used five different analgesics in this experiment: aspirin‚ acetaminophen‚ ibuprofen‚ caffeine‚ and mefenamic acid. Six analgesics were spotted on the TLC plate including the unknown. After the development of the TLC plate‚ it was placed under ultraviolet light for the spots resulted
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rs om *0485738200* BIOLOGY Paper 2 Structured Questions AS Candidates answer on the Question Paper. Additional Materials: Electronic calculator Ruler (cm/mm) 9700/21 October/November 2009 1 hour 15 minutes READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name in the spaces provided at the top of this page. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue
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Windows server 2008 comes in different versions for the different users‚ not all users need all the same features. The versions are web edition‚ standard edition‚ enterprise edition‚ and datacenter edition. The significance of them are WE 1 OS Is permitted‚ 32-bit 4GB 64-bit 32GB‚ maximum number of CPUs 4. SE hyper-V included‚ plus 1 virtual instance‚ terminal server ‚network access protection‚ and CALs. EE plus 4 virtual instance‚ 32-bit 32GB 64-bit 2TB‚ CPUs 8‚ cluster service yes 16 nodes per
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Abstract In this experiment paper chromatography was used in order to identify two unknown amino acids using eight known amino ones. The two unknown ones were identified by comparing the distance they travelled up the chromatography paper and their Rf values to the corresponding values of the other eight known amino acids. The unknown amino acids identified were Glycine and Methionine. Introduction Proteins in cells are important in many ways. There are different types of proteins such as
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PAPER-1 2 marks questions- 1.Bring out four differences between guttation and transpiration ? 2.Why is abscisic acid called as stress hormone ? 3.What is water potential ? Name the factors that influence it. 4.How is cyclic photophosphorylation different from non-cyclic photophosphorylation ? 5. Where in the roots apoplast pathway of water takes place ? Why? 6.Define respiratory quotient. 7. What is meant by turgor pressure ? What is its importance in plants ? 3 marks questions- 8
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