rotundus was evaluated for its hepatoprotective activity in rats by inducing liver damage with carbon tetrachloride. The ethyl acetate extract which was administered orally at a dose of 100 mg/kg exhibited significant protective effect by lowering serum levels of the liver enzymes such as alanine aminotransferase (ALT or SGPT)‚ aspartate aminotransferase (AST or SGOT)‚ alkaline
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CHAPTER ONE 1.0 INTRODUCTION This report is a practical experience acquired by me in the course of my industrial training at Druckfarben Nigeria Limited (DFN) under the student industrial work experience scheme (SWIES). In the earlier stage of science and technology education in Nigeria‚ students were from their respective institutions without any technical knowledge or working experience. It was in this view that students undergoing science and technology related courses were mandated in different
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and HNO3 the chloride ion solutions are used because silver nitrate is insoluble in HNO3. During the acetate anion test we had a positive result for solution D that proved the presence of the acetate ion. This reaction was from one drop of concentrated sulfuric acid and 1ml of ethanol and then required heating to excite the solution. Since ethyl acetate was produced we knew D contained the acetate anion‚ the fruity aroma produced after the solution was heated to release a gas proved this. This newly
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Introduction: Dealing with chemicals is an essential part of a chemical engineer’s job. It is therefore crucial to be able to accurately identify the composition of a chemical to be able to work with it. Indeed‚ different species have different physical and chemical properties which dictate their uses and applications. Furthermore‚ this kind of analysis is important in quality control since the detection of unwanted chemicals may lead to the rejection of a product for example. In addition to qualitative
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243a Matt Judd‚ Sec. 25 Date Performed: 10/15/03 Abstract: The objective of this experiment is to efficiently perform a fischer esterification of 1-Hexanol to form water and hexyl acetate‚ and to confirm the esterification with a nuclear magnetic resonance (NMR) spectroscopy. It was found that 0.3963 grams hexyl acetate was formed with a percent yield of 33.2%. The product was confirmed using NMR‚ IR‚ and boiling point confirmation. Backround: A Fischer Esterification is the formation of an ester
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it comparison with literature though Melting point‚ TLC‚ IR‚ 1H and 13C NMR Abstract: The synthesis of the product: β-D-glucose pentaacetate is done though the acetylation using acetic anhydride with D-glucose with the help of sodium acetate. The recrystallization of the product is done though a polar solvent like water. The Result of this experiment has a percentage yield of 61% and analytical methods that are to detect the products are 1H NMR‚ 13 C NMR‚ COSY‚ FTIR (IR)‚ Thin Layer Chromatography
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bottom and sides of the flask so a spatula will probably be needed to scrape them out. Washing the flask and crystals with ice- cold xylenes completes this process. The resulting dried product was recrystalized using hot ethyl acetate. A hot plate was used to boil ethyl acetate to be poured into a heating beaker with a mixture of EtoAc and adduct until the product dissolved. A sequential suction filtration completed this
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Jacobsen’s Method of Epoxidation of an Alkene | | Abstract Various types of reactions were completed to first create and then use Jacobsen’s catalyst in the asymmetric epoxidation of an unknown alkene with bleach in the laboratory. The chiral epoxide synthesized was then characterized with GC/MS and NMR. With this information the unknown alkene was able to be identified as 4-chlorostyrene. Introduction Organisms have evolved with mechanisms that use specific enantiomers of molecules
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reduced pressure. b) Hot extraction : In this extraction also 100gm powdered root was subjected to hot extraction. In this extraction the solvents are used polarity wise such as‚ Sl no: Solvents Polarity 1 Pet. Ether 0.1 2 Chloroform 4.81 3 Ethyl acetate 6.02 4 Ethanol 24.55 For 100gram of plant material yield (g) of the Leaves extract is as
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useful to make cinnamic acid. Experimental Section This experiment was performened on a 40 mmol scale. The materials we will use will be salicylaldehyde‚ Ethyl acetoacetane‚ Piperidine and Ethanol. In a 150ml single-neck round bottom flask equipped with a stir bar‚ add salicylaldehyde. We used 4.89g or one equivalent. Then add ethyl acetate to the round bottom flask. We added 5.47g or 1.05 equivalent. Add 40 mL of ethanol to the round bottom flask make sure to stir. While stirring add the piperidine
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