Caffeine from Tea Leaves Santos‚ Raphael‚ Samson‚ Nonia Carla‚ *Tabora‚ Brylle‚ Tan‚ Kate Michal Department of Biological Sciences‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Tea leaves are natural products that are harvested from agriculture. Caffeine‚ on the other hand‚ is a stimulant that has been shown to speed up the time of reaction‚ increase alertness‚ and improve one’s concentration. What we did in this experiment was to extract the alkaloid caffeine content from the tealeaves
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Extraction of Caffeine from Tea Leaves Department of Biological Sciences‚ College of Science University of Santo Tomas España‚ Manila‚ 1028 ABSTRACT: Caffeine is a white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds‚ leaves‚ and fruit of some plants. It is most commonly consumed by humans in infusions extracted from the seed of the coffee plant and the leaves of the tea bush‚ as well as from various foods and drinks containing
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Date of experiment: September 3rd‚ 2013 Organic Chemistry II – CHLB330 Name: Symone MoxeyLab Partner: Lynden Cooper Isolation of caffeine from tea leave Abstract:- Introduction:- Caffeine is probably the most commonly used addictive drug. This drug is found in a number of things ingested by people. It belongs to a group of nitrogen bases called purines. Because caffeine possesses these base-like properties‚ it is described as an alkaloid. They usually taste bitter and often are physiologically
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Water and Wetlands: An Economic Perspective Submitted by: Monalisa Detha B.A. (Pass course) Sem. VI Index 1. Introduction 2. The value of water and wetlands 3. Cost effectiveness of natural infrastructure 4. Status and trends of water bodies and wetlands 5. Economic benefits of restoration of degraded wetlands 6. Ways to improve water resource management
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Extraction of Caffeine from Tea Leaves Introduction Caffeine is soluble in boiling water and as a result it is easily extracted from tea bags by steeping in hot water. This process leaves behind the water insoluble portions of the tea bag. However‚ water extracts more than just caffeine‚ so a final separation is done with an organic solvent that will dissolve primarily caffeine. The organic solvent used in this experiment is Dichloromethane (CH₂Cl₂). Dichloromethane is less polar than water
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Extraction of Caffeine from Lipton® Tea Leaves Nathaniel Camangon*‚ Kaila Bumagat‚ Franz Mari Burgos‚ Remigio Callanta Department of Chemistry‚ College of Science‚ University of Santo Tomas‚ Manila‚ Philippines Abstract This experiment mainly focuses on the extraction of pure caffeine by multiple extraction from commercially acquired tea leaves and determining its purity by melting point determination. A 0.02% yield of pure caffeine was obtained from 10.4978g of tea leaves (4 tea bags). The acquired
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LESSON PLAN: CRITICAL AND RESPONSE PERSPECTIVE Walden University Instructor: Bernice Gregory Class: The Beginning Reader: PreK- 3 EDUC-6706R-1 February 16‚ 2014 LESSON PLAN: CRITICAL AND RESPONSE PERSPECTIVE In this lesson‚ I focused on Jace‚ the second grader. I was able to hold a small group lesson in her classroom so that I could be able to assess her literacy ability first hand when it comes to critical and response perspectives. I learned of the idea of a tea party from
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Extraction of Caffeine from Tea Leaves Marc Tugaoen‚ Kristine Vanzuela‚ Rafael Villanueva‚ Justeen Wong Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract This experiment has been divided into 4 set-ups‚ first was the solid-liquid extraction‚ next was the liquid-liquid extraction‚ then the sublimation and last was the melting point determination. The solid-liquid and liquid-liquid extraction were both done during the first meeting‚ the DCM layer was filtered and
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EXECUTIVE SUMMARY 1. Introduction………………………………………… 2. Company Overview‚ Top-Down Approach-Economic Analysis……………………………………… 3.Treynor & DSharp Measure……………………………………….. 4. Ration Analysis ……………………………………… 5.Risk analysis ……………………………… 6.Optimum capital structure 7. Intrinsic value 8. Dividend Policy 9.Conclusion & Recomendation Executive summary: The term paper is done in order to evaluate
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Expansion Plan‚ ALPHA Enterprises desires to expand its business network (Both Manufacturing and Selling) either in Pakistan or Bangladesh. Your Department has been tasked by CEO to conduct a Strategic analysis of Business/Industry for both the countries. Keeping this in mind Q1: Conduct a Strategic Analysis using Michael Porters Five Forces and on the basis of said analysis recommend the Country that is more feasible for investment? Michael Porter’s competitive forces model * Provides general
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