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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Differed ways to consume tea resulted in different ways of using tea wares. Compared to the typical way of tea drinking in the late-Ming period‚ the process of tea-tasting in the Tang and Song dynasties were much more complicated. The complication implied that tea connoisseurs in the Ming era had drastically simplified the tea vessels they often used‚ as well as the whole procedure of tea tasting. The understandings of Tang-style tea drinking have been significantly transformed by the re-apparition
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In this lab‚ caffeine was extracted from black tea‚ and green tea through a vacuum filtration‚ and a rotovap. The melting point of the sample of black tea was 219.12-236.05 ˚c‚ and for the green tea it was 176.22-227.6 ˚c. The % error of the melting point indicates how much error there was from the melting point taken experimentally. The % error of the melting point for black tea was 0.44%‚ and for green tea it is 3.15%.Since the theoretical melting point of caffeine is between 235-237 ˚c‚ we can
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collected‚ 5.758g of tea leaves contains 3.96% caffeine. After the purification process‚ 0.2279g of caffeine was obtained from 0.4948g crude extract with 46.06% yield. Melting point determination was used to characterize the caffeine yielded. However‚ the melting point range of the caffeine collected (190°C -215 °C) was lower than the melting point of the accepted value (238 °C) which may be due to experimental errors committed in the extraction and washing process. Introduction Tea has been consumed
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TEA PARTY MOVEMENT AND RELIGION IN THE US FROM 2007 TO THE PRESENT 1. The Tea Party Movement‚ a religious movement a) The origins The tea party movement takes it name from the Boston tea party which was a protest by colonists who objected to a British tax on tea in 1773. It was an historic event which marked the beginning of the American Revolution against the British monarchy in the eighteenth century. Moreover the acronym TEA stands for "Taxed Enough Already". Tea Party movement‚ conservative
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The Boston tea party is the most important event leading into the American Revolution because although some violence and destruction had happened already‚ this event was the one that directly challenged the King. Before the Boston tea party‚ most of the complaints were just talk. Also‚ this cost them a lot of money‚ almost 1 million dollars. They wasted a lot of tea‚ 342 containers. The reason they wasted so much tea was because they loved tea‚ and people of the time drank a lot of tea. Refusing
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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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go wrong with tea tree oil and Jojoba oil Do you suffer from acne blackheads and whiteheads? Perhaps you have cysts and pimples. Whatever acne issue you might have‚ you obviously want to end it. As much as you feel desperate to eliminate your acne‚ you probably don’t think there is a cure you have not tried. The truth is that if you have not tried tea tree oil and jojoba oil for acne you cannot quit yet. We will explain how each of these oils could be used to eliminate acne. Tea tree oil – What
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The Boston Tea Party started at midnight on December 16‚ 1773. More than one hundred colonists called the Sons of Liberty threw about forty five tons of tea from British ships into Boston Harbor. This “protest” was a very justified act that showed confidence‚ determination‚ and bravery. Others believe that the act was unnecessary and the colonists went overboard (no pun intended) with their behavior‚ even though the colonists didn’t even damage the ships at all. This whole thing probably wouldn’t
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Chatime Malaysia managing director Bryan Loo said it expects to have at least 100 bubble tea outlets nationwide by year-end. "We are looking at expanding across Malaysia which includes Sabah and Sarawak as well‚" Loo told reporters after the launch of the BCARD and Chatime collaboration at a Chatime outlet in Bandar Puteri Puchong yesterday. He said his company‚ Loob Holding Sdn Bhd‚ brought in the bubble tea franchise from Taiwan two years ago‚ with him operating the first outlet as the cashier
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