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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Agricultural Research Vol. 22 (3): 251 - 262 (2011) Strategies for Competitive Advantage in Value Added Tea Marketing H.M.U.N. Herath and S. De Silva1* Postgraduate Institute of Agriculture University of Peradeniya Sri Lanka ABSTRACT. At present the world tea market is rapidly growing with emerging customer needs. The importance of a change from bulk tea exports to value added tea products is highlighted in literature to face the challenges in an increasingly competitive beverage market
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Alugbati (Basella rubra) Organic Tea A Science Investigatory Project Submitted as an Entry to The Local Science Fair LPNHS Proponent: Anica Shane V. Cabrera III-RGL Submitted to: Mr. Michael M. Safred Research Adviser August 8‚ 2011 i Abstract Since tea act as newly craze across the world this generation it is a worldly desire to have a cup of it. The main conflict with this study is that teas are said to contain fluoride and caffeine which will contribute
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3)History 4)Sequences of Festivies -Preceding days - New year’s eve -1st -15th day. -Cuisine. 5)Main Customs. 6)Seen as a public Holiday 7)Evolution II)Taiwanese Tea 1)Introduction 2)Historical Background 3)Taiwanese tea culture -Teaism -Teaware -Ceremony 4)Bubble tea 5)Tea approach and conclusion I)Chinese New Year 1)Introduction Chinese New Year is the most important of the traditional Chinese holidays. It
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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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Abstract The purpose of this experiment was to perform a liquid-liquid extraction method to extract the caffeine from the tea bags that were provided‚ and then recrystallize the caffeine. The solvents used in the experiment were an aqueous sodium carbonate and dichloromethane (DCM). Anhydrous calcium chloride pellets were used to dry the solution and emulsion layer and the DCM was then decanted. After washing the anhydrous calcium chloride pellets with more DCM‚ the solvent was evaporated‚ leaving
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Boston Tea party because the Colonist had enough of the King putting taxes on things without telling them. That night they threw a whole cargo of tea overboard into the sea that came from Britain. The Boston Tea Party had a greater impact leading the colonies towards fighting for Independence from Britain. The King was making taxes without telling the colonists which made them angry because the colonists wanted to talk to the king about the taxes and maybe they didn’t want the tax. The Tea Act was
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Boston Tea Party The Boston Tea Party is typically viewed as one of the most popular‚ well-known events of the Revolutionary War. The Boston Tea Party occurred on the night of December 17‚ 1773. The colonists were fed up with Britain taxing them and trying to regain control. The Boston Tea Party was a direct response to the Tea Act‚ an act created to save the East India Tea company‚ left the colonists paying very high taxes on tea. Many people drank tea and enjoyed it very much so it left many
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Revolution. This event was known as The Boston Tea Party‚ taking place in Boston‚ a city in the British colony of Massachusetts. Massachusetts Patriots were in immense disapproval on how parliament was trying to monopolize the market on American tea importation granted to the East India Company (Boston Tea Party). The East India Company was a failing British corporation. This Company was on the verge of bankruptcy. They had millions of pounds of unsold tea that sat in warehouses. The idea was to persuade
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Introduction Tea is the second most popular drink in the world‚ after water. For a number of developing countries it is also an important commodity in terms of jobs and export earnings. Tea production is labour intensive and the industry provides jobs in remote rural areas. Millions of livelihoods around the world depend on the production of tea. For a number of tea exporting countries‚ including world champion exporters Kenya and Sri Lanka‚ tea is a critical source of foreign income. However‚ as
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