Coffee: Old Familiar Becomes New Favorite (#)
„Arabica beans are largely responsible for coffee's recently up-scaled reputation. In general, arabica beans have less caffeine, ounce-for-ounce, than robusta beans. As for roasting method, darker-roasted beans actually have less caffeine than those that are lighter, because heat from roasting removes the caffeine. Brewing methods that expose coffee grounds to water for longer periods, as in percolated coffee or the "French press" method, result in higher caffeine than standard drip methods.“
http://www.ext.colostate.edu/pubs/columnnn/ nn980923.html - Cached
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Robusta Coffees for Home Roast Espresso Blends
„(Also, Robustas such as these are now being used in filter coffee "high caffeine" blend since the caffeine levels are doubled in Robusta over Arabica. But this really isn't something I am going to endorse, or even investigate myself even though such brands as ShockCoffee are doing exactly this...) Also check out Nestle's description of Robusta -interesting!“
http://www.sweetmarias.com/coffee.robusta.html
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„Fine Arabica coffees contain one half of the caffeine found naturally in the cheaper Robusta beans that are used in supermarket coffees. (Using Robustas in espresso blends is another controversy that tweaks the regulars around the newsgroups.) The results of chemical analysis performed by Lauk's Testing Labs in Seattle were recently posted at the LucidCafe Web site by David Schomer. Check out these numbers: Espresso Ristretto (18.5 grams of finely ground coffee, 1 3/4 fluid ozs) 230 milligrams of caffeine. Paper Filtered, Cone drip brewed coffee (18.5 grams of Arabica coffee, about 16 fluid ozs) 340 milligrams of caffeine Those are interesting numbers but I don't know anyone who makes a 16 oz pot using only 18.5 grams of ground coffee.“
http://gawlowski.com/matt/html/ espresso_faq.html
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„It's slightly more expensive, but contains less caffeine than blends that combine arabica and robusta beans. * Roasted coffee beans start to lose some of their flavor within two weeks. Ground coffee begins to lose its flavor in minutes. Freezing is not necessary to maintain the flavor.“
http://www.juanvaldez.com/menu/preparation/ perfect.html
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BSCA - BSCA Certified Roasted Coffees - ASTRO CAFÉ
„From a chemical point of view, the main difference between the two types of beans is found in the percentage of caffeine: 1-1.7 in Arabica and 2-4.5 in Robusta beans.“
http://www.bsca.com.br/ certified.php?lang=en&certified_id=4
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Coffee History - Learn about coffee...
„It also tolerates disease better and therefore produces a much better yield than arabica. Robusta coffee is certainly less expensive than arabica coffee and typically has a harsh flavor and a high caffeine content. Coffee arabica The arabica species is the sole source of fine coffee. Arabica trees are delicate, more expensive to cultivate and probably most important; grow at higher altitudes.“
http://www.javacafe.com/cofhistory02.htm
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Archived in Beans, Arabica, Arabica Beans, Bean