keep the cardiologist away” (Dyer par.10). Chocolate‚ craved for its rich taste‚ can be used for more than just satisfying hunger or adding on a few extra pounds. Dark chocolate is the healthiest type of chocolate contains a high concentration of flavonoids (a type of antioxidant) which has many health benefits to it. Studies have shown it can improve brain function by improving memory skills. Desserts are ancient remedies for stress and depression and recent research conducted shows that dark chocolate
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Thin-layer Chromatogragaphy : Analysis of Drug Components CHEM221 Date experiment performed : January 20‚ 2014Date Submitted : January 27‚ 2014 Introduction This laboratory has its first objective to familiarize with the thin layer chromatography (TLC) technique. Second‚ each student has to identify the unknown components by comparing it to one of the tree dissolved liquid analgesics: Acetaminophen‚ Aspirin and Caffeine. Finally‚ calculating the Rf value by measuring the mobile and stationary phase
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The progress of the reaction was monitored in my case using two TLC plate. It first started off with the spotting of Standard benzoin and benzil which were provided in the lab and followed by the addition of the reaction mixture at once it starts changing colour/boiling‚ then at 10 and 20 mins into the reflux. Once all the necessary steps were spotted‚ the TLC plate was placed in in a beaker containing CH₂Cl₂(methylene chloride)‚ which was used as the developing solvent in this experiment. To check
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Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
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eluate were collected‚ this process is the column chromatography (CC). The purity of the components was determined by using the thin layer chromatography (TLC). Ultraviolet spectroscopy and iodine staining were used to visualize the developed TLC plate and the Retention Factor was measured. Keywords: Chromatography‚ column chromatography‚ TLC and visualizing agent‚ elution‚ capsicum frutescens Introduction Chromatography can be defined as the separation of a mixture‚ in which the mixture is
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We can also get antioxidants by maintaining a healthy diet. Eating fruits that are rich in antioxidants can also help the body. Quercetin belongs to a group of plant pigments called flavonoids that give many fruits‚ flowers‚ and vegetables their colors. A flavonoid is a group of plant metabolites thought to provide health benefits through cell signaling pathways and antioxidant effects. Quercetin is found in fruits and vegetables‚ such as especially onions‚ citrus‚ apples
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Introduction to Business Law- Assignment 1B Advise TLC Ltd. as to any possible action they may have for misrepresentation against answer Ltd. _____________________________________________________________________ Treitel in The Law of Contract (2003) defines a contract as: “An agreement giving rise to obligations which are enforced or recognised by law. The factor which distinguishes contractual from other legal obligations is that they are based on the agreement of the contracting
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Title: Thin-Layer Chromatography Objectives: Part1: 1. To learn the technique of TLC and the visualization of colourless components. 2. To identify an unknown drug by a TLC comparison with standard compounds. Part 2: To learn the separation technique by using Thin Layer Chromatography plate in separating a mixture of compounds into individual pure compound by using Spinach Leaf. Introduction: (i) General Concepts Chromatography is a common and powerful method used to separate and analyze complex
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Making TLC Plates from Bulk TLC Silica Gels Many TLC users prefer to use pre-coated TLC plates‚ but others because of their special needs‚ or because they need special additives or a special thickness‚ coat their own TLC plates. This paper is a quick review of what is needed for the process. Initial instructions for plate coating: If reproducible plates are needed‚ then the user should invest in a coating device from Camag or Desaga (addresses below). The devices consist of a tray that holds
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technique of TLC and the visualization of colourless components. (ii)Identify the unknown drug by a TCL comparison with standard components. Part2 :to learn the separation technique by using TLC plate in separating a mixture of compound by using spinach leaf. Apparatus:UV lamp‚capillary ‚250 ML beaker Materials:aspirin‚acetaminophen‚caffeine‚unknown A‚unknown B‚TLC plates‚ethyl acetate‚Hexane‚acetic acid‚iodine Introduction: Procedure: A.spotting of the TLC plates 1.A TLC plates is obtained
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