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
Premium Caffeine Tea Green tea
SCIENCE INVESTIGATORY PROJECT spicy GUAVA LEAVES CHIPS
Premium Vitamin C Vitamin Nutrition
EXTRACTION OF CAFFEINE FROM TEA LEAVES ABSTRACT Caffeine extraction from the commercial tea leaves (Lipton Yellow Label Tea) that was done is multiple extraction. 4 tea bags were used in the experiment; tea leaves were weighed having 8.5333 grams. The leaves were boiled in a beaker with 150ml of water; the aqueous tea extract was transferred in a seperatory funnel mixed with DCM (20ml)‚ done thrice. The DCM layer was washed with 20ml 6M NaOH in the seperatory funnel; the organic layer
Free Caffeine Coffee Tea
Extraction of 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
Premium Caffeine Tea
of information for all the workers‚ this is a costly problem on its own. Therefore the researcher is going to develop a computerized leave application system for the Human Resources Department to improve the department
Premium Human resources
INTRODUCTION “If you think you are too small to be effective‚ you have never been in bed with a mosquito.” -Betty Reese Mosquitoes are small but deadly. Everywhere you go‚ they are willing to suck your blood anytime. With their simple bites‚ they can cause you a great damage. Garlic has not just been considered a special food for the unique flavor it imparts‚ but also for its medicinal value. It is thought that garlic may be an alternative mosquito repellent for humans as well
Free Mosquito Garlic
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
Premium Caffeine Solubility Tea
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
Premium
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
Premium English language Second language Family
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
Premium Family Marriage