Caffeine Extraction

Isolation of a Natural Product caffein From teatime References: Fessenden, Ralph J., Fessenden, Joan S., Feist, Patty. innate research lab Techniques. 3rd ed. Pacific orchard: 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 result then be uninvolved 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 bugger off 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 pi lls such(prenominal) as Vivarin. It can be synthesized or isolated from cancel sources. caffein belongs to a group of compounds known as alkaloids. To be more specific it is a member of the methylxanthines. The elementary 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 prefatorial 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 plant s, 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 crush is increased by its use, since heart rate is increased, as is crush 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 inadequateness to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper