Caffeine Extraction

Isolation of a Natural Product caffeine From afternoon tea References: Fessenden, Ralph J., Fessenden, Joan S., Feist, Patty. innate research lab Techniques. 3rd ed. Pacific plantation: Brooks/Cole, 2001. Print. (61-64, 72-76, 102-107) Jones, Martha O., Ph.D. Laboratory Manual For Chemistry 211. 1998. Print. (42-47) Material asylum Data flat solid (MSDS) List. ScienceLab.com, Inc. 1997-2005. <http://www.sciencelab.com/msdsList.php>. I. Experimental Objective(s): The objective of this experiment is to extract caffein from tealeaves with boiling water. Once the caffeine is extracted it leave alone then be stranded from most of the colored compounds by extraction with dichloromethane. afterward this the crude caffeine will be recrystallized, and then advertize purify it by sublimation. This will conjure a uninfected crystalline solid. II. Experimental Theory: caffeine is a real common substance and is found in coffee, tea, soft drinks, chocolate, and stay -awake pills such(prenominal) as Vivarin. It can be synthesized or isolated from cancel sources. caffeine belongs to a group of compounds known as alkaloids. To be more specific it is a member of the methylxanthines. The staple station of alkaloids comes from the lone pair of electrons found on at least(prenominal) one due north.

These compounds are of plant origin, contain grassroots nitrogen atoms, often restrain a bitter taste, and normally have a psychological activity. caffein is naturally produced by several(prenominal) plants; including coffee beans, guarana, yerba maté, cacao beans, and tea. For the pl ants, caffeine acts as a natural pesticide. ! It paralyzes and kills insects that attempt to feed on the plants. In humans, Caffeine acts to stimulate the heart, central nervous system, and the respiratory system. Blood nip off is increased by its use, since heart rate is increased, as is crunch force and volume output. It is a diuretic and has the effect of delaying fatigue. Caffeine is very addictive to humans. Regular consumption of drinks and food containing...If you lack to get a full essay, order it on our website: OrderCustomPaper.com

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