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Caffeine Oral Report

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Lauren Giambalvo

on 14 November 2012

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Transcript of Caffeine Oral Report

Caffeine Oral Report
Tim Gibson
Lauren Giambalvo
Christina Connelly
Ch 227 -008 Yimei Wen Abstract: The purpose of this lab was to accurately determine the best source of caffeine, either tea or No-Doze, then identify the source of caffeine is truly pure using melting point determination. By filtering the caffeine source using a Buchner funnel and vacuum filtration, then performing three rounds of extraction using dichloromethane, the source of caffeine was isolated. The recrystallized source of caffeine from tea we extracted was .002 grams and had a melting point of 232.4 to 234.0 degrees Celsius. . First of all this lab dealt primarily with the sources of caffeine from and No-Doze. Caffeine is a substance that is relatively bitter and has a white crystalline alkaloid structure. Being an alkaloid, caffeine contains a nitrogenous basic compound that can be extracted from plants and has physiological effects. Caffeine is a common stimulant drug that is found in many drinks, food, and medicine pills.


Structure of Caffeine:




In general, tea contains less caffeine than the No-Doze source of caffeine. In an 8 oz glass of tea there is approximately 15 to 70mg of caffeine, which is relatively low when compared to coffee. Background Information
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