BOT 2000 Chapter Notes - Chapter 12: Aphid, Vitis Vinifera, Bombilla
18 Apr 2016
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Stimulating beverages contain the alkaloid caffeine and its relatives, which cause particular physiological reaction in humans. Caffeine is a central nervous system stimulant and a mild diuretic. As caffeine circulates throughout the body, it stimulates the heart, increases stomach acidity and urine output, and causes a 10 percent rise in metabolic rate. Greatest value traded annually on the international market. Genus coffea (rubiacea)- native to eastern africa- ethiopeans were the first to brew coffee. Coffee was very popular when it reached england in 1650 and by 1675, there were over 3000 coffeehouses, which functioned as forums for political and religious debates. Products that contain more than 100mg of caffeine. 5-oz cup of coffee (drip and percolator method) Coffea canephora (robusta coffee) makes up 25% if the world"s coffee; c. liberica (liberian coffee) makes up 1%; c. arabica makes up the majority (~74%) Arabica coffee is self-fertilizing, self compatible and has a better flavor.
