International Coffee Organization (#)
„If the caffeine is removed by a solvent, this is known as an 'indirect solvent' method; otherwise, the caffeine may be separated from the extract by adsorption onto a substance such as activated carbon (charcoal). The caffeine-free extract is then used to decaffeinate the green coffee, as caffeine passes readily from the beans into the extract. However, these methods also result in the loss of some other water-soluble components of coffee such as carbohydrates and chlorogenic acids.“
http://www.ico.org/acoff/caffeine.htm - Cached
See Technorati for links to this site, see Alexa for related sites and search this website for ›Green Beans Coffee‹.
Virtual Coffee: Feature Articles
„With both direct and indirect solvent methods the caffeine is salvaged and sold to makers of pharmaceuticals and soft drinks.“
http://www.virtualcoffee.com/sept_2002/ decafe.html
-
Cached
„"We then use a series of activated carbon filters to remove all the caffeine from the flavour-charged water, and it can be used again for the next batch of beans. It's a remarkably efficient process, and an expensive one, not least because of the strict caffeine monitoring involved." So, how are other coffees decaffeinated, then? "Typically, coffee is decaffeinated through a variety of more chemically-reliant, severe processes involving substances like Methylene Chloride, Supercritical Carbon Dioxide or Ethyl Acetate. In fact, Ethyl Acetate is a natural substance found in fruit but, like the other chemical processes, it can leave a distinctive aftertaste that most coffee drinkers can detect." Thanks for the Ewan.“
http://www.matthewalgie.com/find_out/ lab-dealing.html
-
Cached
The Coffee Review - the world's leading coffee buying guide
„The direct solvent process opens the pores of the beans by steaming them and applies the solvent directly to the beans before removing both solvent and caffeine by further steaming. The indirect solvent process first removes virtually everything, including the caffeine, from the beans by soaking them in hot water, then separates the beans and water and strips the caffeine from the flavor-laden water by means of the caffeine-attracting solvent. The solvent-laden caffeine is then skimmed from the surface of the water, and the water, now free of both caffeine and solvent, is reunited with the beans, which soak up the flavor components again. The beans are then dried and sold.“
http://www.coffeereview.com/article.cfm?id=61
-
Cached
The Coffee Review - the world's leading coffee buying guide
„The two broad categories are the direct solvent extraction method and the indirect water extraction method. Each process uses a solution of water saturated with coffee oils and flavor elements, but in the former a solvent comes in direct contact with the coffee beans, while, in the latter, the decaffeinating agent does not physically touch the beans.“
http://www.coffeereview.com/article.cfm?id=20
-
Cached
Archived in Green Beans Coffee, Coffee Beans Green, Coffee Green Beans, Free Coffee