Extraction of caffeine from Lipton tea leaves Maria Gianna Beatrice L. Cancio*‚ Joe Mari Isabella B. Caringal‚ Rowena A. Chiang‚ Patricia Deanne del Valle Department of Biological Sciences‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ Philippines Abstract Caffeine was extracted from Lipton tea leaves by multiple extraction techniques namely solid to liquid extraction and liquid to liquid extraction; the purification by sublimation and melting point determination. Three
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zeatin‚ quercetin‚ β sitosterol‚ caffeoylquinic acid and kaempferol. In addition to its compelling water purifying powers and high nutritional value‚ M. oleifera is very important for its medicinal value. Various parts of this plant such as the leaves‚ roots‚ seed‚ bark‚ fruit‚ flowers and immature pods act as cardiac and circulatory stimulants‚ possess antitumor‚ antipyretic‚ antiepileptic‚ antiinflammatory‚ antiulcer‚ antispasmodic‚ diuretic‚ antihypertensive‚ cholesterol lowering‚ antioxidant
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2015 Exploring Language and Identity Question: Language is more than words put together; it is a tool of communication. What does Amy Tan author of “Mother Tongue” and Manuel Munoz author of “Leave your name at the border” say is the importance of language to them? How do they differ on their lives? Language is more than words put together; it explores the intimate use of language we share with family and peers which is how
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Photosynthesis is the process of transforming light energy into chemical energy that is used to build carbohydrates. Light reactions occur in the thylakoid membrane of the chloroplast‚ sunlight and water are the substrates for this reaction. The conversion of light energy can go through two pathways: noncyclic and cyclic. In noncyclic light transport‚ both Photosystems II and I are involved producing ATP and NADPH. Photosystem II absorbs 680 nm of light energy‚ with the oxidation of water; chlorophyll
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Television Review There are some slight differences between the families in Leave it to Beaver and Modern Family. Lets start with Leave it to Beaver‚ created in 1957 with black and white video the main family consisted of a husband and wife‚ and two sons named Wally and Beaver. The family manner was the man of the house brought in the money while the wife cleaned and served most of her time at home looking after the boys. As I viewed a couple episodes‚ I saw that both brothers got along very well
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Reinhold Niebuhr once said “Forgiveness is the final form of love.” When someone wrongs a person how would they feel? In the novel A Parchment of Leaves by Silas House a Cherokee girl named Vine marries an Irish man named Saul. Saul’s brother Aaron who vine saved when he was bitten by a snake ends up liking Vine which turns into an obsession. Throughout the book Aaron becomes increasingly obsessed with Vine to the point that he asks her to run away with him and while drunk rapes her. This leads to
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The begin of the moving-picture; Penelope is bearing Odysseus’ child‚ Telemachus. Later‚ the rulers (Agamemmon and Menalayes) make Odysseus leave Ithica for war against the Trojans. He was meaning to bring his bow with him on his excursion‚ however‚ his mom instructed him to keep the bow in Ithica in this manner once he returns home he can demonstrate his child the best approach to utilize it. Before leaving his home‚ Odysseus prays to the Goddess Athena to help him through this war. At that point
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CHAPTER 4 RESULTS AND DISCUSSION 4.1 Percentage yield Fresh leaves of C. nardus with 1 kg portion yielded about 22.57g of aqueous crude extract‚ which was approximately about 2.26% of yield. The result showed that fresh leaves had a higher percentage yield compared to the air-dried leaves‚ it was only 1.3% yield which conducted by Koba et al. (2009) with the similar extraction technique. There were other factors that might affect the percentage yield‚ such as influence of the harvest place
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Cyberspace: If You Don’t Love It‚ Leave It In Ester Dyson’s essay‚ “Cyberspace: If You Don’t Love It‚ Leave It” she argues that regulating the internet is impossible and will have an opposing effect. Dyson highlights cyberspace regulations that did not work and why we need self rule. Dyson also talks about the uniqueness of cyberspace and the conflict it would have on earth. Dyson’s belief is that everyone should have a choice and an individual responsibility and how the uniqueness of cyberspace
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INVESTIGATING FACTORS AFECTING THE RATE OF PHOTOSYNTHESIS! Testing Carbon Dioxide Done by: Krish S. AIM: is to plan and carry out an investigation on factors affecting the rate of photosynthesis. We are doing this by investigating the amount of bubbles produced by waterweed to show the rate of photosynthesis and the effects of carbon dioxide (CO2). HYPOTHESIS: I think that the rate of photosynthesis will increase as the rate of CO2 increases this can be seen by the bubbles produced from
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