of the protein wherein the secondary‚ tertiary and quaternary structures are all affected. Denaturation is brought about by various kinds of physical and chemical means; this includes the addition of strong acids‚ heavy metal cations‚ alkaloidal reagents‚ salting out and addition of organic solvents. Precipitation is commonly observed when a protein is denatured. The experiment was done to explain the principles behind each method of denaturing proteins. In addition of strong acids to protein solution
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In Vitro Diagnostic (IVD) Market [Instruments‚ Reagents & Data Management Systems] [Technique (Immunoassay‚ Clinical Chemistry‚ Molecular Diagnostics‚ Hematology) & Applications (Diabetes‚ Infectious Diseases‚ Cancer & Cardiology)] Systems‚ End Users] Forecast To 2017 On 13rd June 2014 The report focuses on "In Vitro Diagnostic (IVD) Market [Instruments‚ Reagents & Data Management Systems] [Technique (Immunoassay‚ Clinical Chemistry‚ Molecular Diagnostics‚ Hematology) & Applications (Diabetes
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the carbohydrate by concentrated sulfuric acid to produce an aldehyde which condenses with two molecules of phenol‚ resulting in a coloured compound. Molisch reagent is a solution of α-napthol in 95% ethanol. The aldehydes produced are pentoses and hexoses which can derive to furfural and hydroxymethyl furfural respectively. The Molisch reagent further reacts with furfural to yield a coloured product which is a deep violet ring at the interface of two layers. The reaction occur at the junction where
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References: 1. Kroner‚ R. C.‚ Longbottom‚ J. E.‚ Gorman‚ R.A.‚ "A Comparison of Various Reagents Proposed for Use in the Winkler Procedure for Dissolved Oxygen"‚ PHS Water Pollution Surveillance System Applications and Development‚ Report #12‚ Water Quality Section‚ Basic Data Branch‚ (July 1964). 2. Annual Book of ASTM Standards‚ Part 31‚
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2012 Aim The aim of this lab is to determine the order of the reaction between Propanone and aqueous Iodine with respect to Iodine. Apparatus and Reagents Apparatus I. Eye Protection (1) II. Spectrophotometer III. Cuvettes for spectrophotometer IV. Burette (4) V. Burette Stand (4) VI. Stopwatch VII. Conical flask (2) Reagents I. 0.020M I2 (aq.) II. 2.0M CH3COCH3 (aq.) III. 2.0M HCl (aq.) Raw Data Absorbance of I2 Solution Volume of I2 Solution/ cm3
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amylase is working. If the amylase is inactivated‚ it can no longer hydrolyze starch‚ so the blue color of the starch-iodine complex will persist. You will also test for the presence of glucose in the samples using Benedict’s reagent. When a blue solution of Benedict’s reagent is added to a glucose solution‚ the color will change to green (at low glucose concentrations) or reddish-orange (at higher glucose concentrations). Starch will not react with
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Reducing Sugars : Sugars that contain aldehyde groups that are oxidised to carboxylic acids are classified as reducing sugars. Common test reagents are : Benedicts reagent (CuSO4 / citrate) Fehlings reagent (CuSO4 / tartrate) They are classified as reducing sugars since they reduce the Cu2+ to Cu+ which forms as a red precipitate‚ copper (I) oxide. Remember that aldehydes (and hence aldoses) are readily oxidised (review ?) In order for oxidation to occur‚ the cyclic form must first ring-open
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Sean Dougherty 12/10/12 Dr. Dominguez LTCS 50 Final Paper - Star Wars on Culture Friday‚ May 25‚ 1977‚ Memorial Day weekend opens with an intergalactic bang as the first of George Lucas’ blockbuster Star Wars movies hits American theaters‚ and the world was never the same. Whether you are a fan of the double trilogy or not‚ there is no doubt the series has permeated our society. Ranging from simple references in shows or movies to all kinds of memorabilia‚ Star Wars is an unavoidable phenomenon
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respectively. A melting point range of 85-87oC was obtained from the purified product. - Introduction A Grignard reaction adds an alkyl-magnesium halide to an aldehyde or ketone carbonyl carbon. The alkyl-magnesium halide is known as the Grignard reagent. The carbon bonded to the magnesium
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