Final Year Project Progress Report Title: Fat Content Analysis and Characterization of Food Class and Group No. : AS114103/2A1 Student Names : Chan Hoi Ching (120586347) : Chan Wai Yi (120464356) : Cheung Kit Cheung(120552694) : Lam Chi Ching (120224281) : Lam Pik Shan (120181829)
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then we started with station 4‚ solubility‚ we had add a small amount of 4 different liquids (Hexane‚ Ethanol‚ Water‚ or Vegetable oil) to a well‚ then we had add a solid (Salt‚Sugar‚ or Lard) to each of the 4
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group. Waxes are non crystalline. Example: Bees wax‚ Carnauba wax‚ opal wax. Etc. Properties of oil: 1. At room temperature oils liquid. 2. Oils contains large proportion of unsaturated fatty acid. 3. Oils are insoluble in water but readily soluble in Hexane‚ ether‚ benzene‚ Carbon tetra chloride‚ etc. 4. Oils are easily hydrogenated like alkenes. 5. Oils react with Iodine‚ chlorine in aqueous alcoholic solution to form iodo-chloro derivatives. Terms related Definitions: Iodine value: Iodine value may
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depends on the essential principles as does in thin layer chromatography. It was used in this experiment in separating and analyzing the different components of Capsicum frutescens (siling labuyo) with the use of solvents such as Hexane (C6H14)‚ Dichloromethane (CH2Cl2)‚ Hexane/Dichloromethane (1:1)‚ and Dichloromethane/Methanol (MeOH) (1:1). The components found in the experiment were carotenoids (carotenes and lutein)‚ xanthophylls (capsanthin) and anthocyanins. Introduction [1]Column Chromatography
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Observations recorded. These steps will then be repeated using hexane as the solvent instead of water. Part II: Solubility Testing of the Halogen Make baseline observations of what each of the ions and molecules looks like in water and in hexane. First‚ 1mL of the aqueous (water) solution of iodine will be added to a test tube using a dropper in lieu of a graduated cylinder. Appearance of solution will be recorded. Then‚ 1mL of hexane will be added to the test tube mix. Observations of both layers
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technique for separating and/or identifying the components in a mixture. There are different types of chromatography and each has its own strengths and weaknesses. In this experiment‚ pigments of the chili pepper were extracted with the use of hexane‚ hexane-DCM‚ DCM‚ and DCM with methanol; then‚ the extract was introduced into the column and eluate were collected‚ this process is the column chromatography (CC). The purity of the components was determined by using the thin layer chromatography (TLC)
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in Part I. List compound on one axis of your table and solvent system on the other. If multiple spots were present for a compound‚ give Rf value for each component and state if the component was major or minor. | 100% hexane | 25% EtOAc in hexane | 10% EtOAc in hexane | Fluorene | 0.34 cm | 0.94 cm | 0.67 cm | 9 - fluorenol | 0.00 cm | 0.49 cm | 0.05 cm | 9 - fluorenone | 0.00 cm | 0.69 cm | 0.21 cm | 2. Explain how Rf values were generally affected by polarity of the solvent/eluent
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alcohol (intermediately polar)‚ and hexanes (nonpolar). When benzophenone is mixed with water the results turned out to be insoluble because benzophenone is a pure hydrocarbon‚ which are very insoluble in water. When benzophenone was mixed with methyl alcohol‚ it was soluble because Methanol can hydrogen bond to the carbonyl oxygen of benzophenone. When benzophenone was added to hexanes it was partially soluble because “likes dissolve likes” benzophenone is polar and hexane in non polar. When the next compound
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collected for regeneration. Soxhlet extraction for adsorbent regeneration Two boiling chips are added into the flat bottom flask and weighed. Then‚ hexane is poured into the flat bottom flask until it is half full. Teflon tape is applied on the bottom end of siphon and condenser before fitting the apparatus. This is to prevent the released of hexane gas during the experiment. The wrapped adsorbent is then placed inside the thimble before putting it over the soxhlet extractor for extraction. Vertical
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Physical Chemistry CHM2330 Experiment F- Raoult ’s Law Experiment By: Sanah Assaad Student Number: 5267864 Partner: Jihad Arafa T.A: Didier University of Ottawa March 25‚ 2010 Objective: The purpose of this experiment is to study the total vapour pressure of ideal or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult
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