BOT 1200 Lecture Notes - Lecture 12: Hemileia Vastatrix, Rheumatoid Arthritis, Coffee Bean
14 Mar 2016
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Document Summary
The alkaloid, caffeine, is structurally similar to adenosine, a chemical found in the brain that leads to sedation. These chemicals compete for adenosine receptors in the brain. Within 15 mins of consuming coffee/tea, caffeine reaches peak levels in the bloodstream. It takes 2. 5 to 6 hours for the caffeine effct to wear off. Enhances pain-relieving effects of aspirin and acetaminophen. Possible infertility in women and birth defects. From the ethiopian area, kaffa, believed to be the birthplace of coffee. From kahveh or qahwah believed to mean stimulating or a wine tonic that restores the appetite . There are 20 species in the genus (rubiaceace family) Coffee arabica is the original coffee, natice to the highlands of ethiopia. Coffea canephore is native to the hotter and wetter lowlands of west africa. Best growth occurs under the shade of forest trees. Plants are shrubs with glossy leaves and fragrant jasmine-like flowers. Coffee was first enjyed in food form.
