Coffee Decaffeination (#)
„Coffee is decaffeinated using a variety of processes. All of which are relatively harmless to your health, but harmful to the beverage quality. Almost all the methods of decaffeinating coffee consist of soaking the beans in water to dissolve the caffeine, extracting the caffeine with either a solvent or activated carbon, and then re-soaking the beans in the decaffeinated water to reabsorb the flavor compounds that were lost in the initial extraction. The solvents typically used are methylene chloride or ethyl acetate, which both have a low boiling point. Since ethyl acetate is found naturally in fruits you will hear people call this process "natural." In any case the solvent never comes in contact with the bean itself, but only the water solution containing the caffeine that was previously extracted from the bean. Therefore the process is relatively benign. All methods of decaffeination are based on equilibrium principles and solvent/solute properties. As such, neither all of the caffeine is removed from the coffee, nor are all of the flavor compounds returned or left in the coffee. The chemical composition of decaffeinated coffee is altered, and therefore the flavor and aroma are changed. “
http://www.coffeeresearch.org/science/ decaffeination.htm - Cached
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- Coffee Science Information Centre
„A 150 ml cup of instant coffee contains about 60mg caffeine and filter coffee contains about 85 mg. For those who like coffee but are sensitive to caffeine, the decaffeinated beverage contains only 3 mg per cup.“
http://www.cosic.org/coffee-and-health/summary
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„Peet's wisely carries both types of decaffeinated coffee. In either form, decaffeination certainly seems to work: it would take thirty cups of decaf coffee to equal one caffeinated cup. Where our Decaf Special is concerned, we find it woody in taste and nicely flavorful.“
http://www.sallys-place.com/beverages/coffee/ javagirl.htm
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Drinking Decaffeinated Coffees
„An obvious by-product of these methods is extra caffeine. This is sold for beverage and medicinal uses, making the price per pound of chemically decaffeinated coffee less expensive than Swiss-Water Processed beans as no caffeine can be reclaimed from the process.“
http://www.sallys-place.com/beverages/coffee/ decaffeinated.htm
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„Decaffeinated coffee is coffee which has had almost all of the caffeine removed. Commercial decaffeination processes were started in Germany during the early part of the 20th century. There are different methods of decaffeination, though the end result is more or less the same.“
http://www.britishcoffeeassociation.org/ id71.htm
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„Equal Exchange's Naturally Decaffeinated coffees are different. For years we have used the All Natural Liquid Carbon Dioxide (CO2) Decaffeination Process. We hope you'll enjoy your java knowing that it's naturally decaffeinated to be 99.9% caffeine free.“
http://www.equalexchange.com/products/ packaged.html
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Archived in Naturally Decaffeinated, Caffeine, Caffeine Coffee, Caffeine In Decaffeinated Coffee, Coffee Beans - Decaffeinated, Coffee Caffeine, Coffee Health, Decaffeinated, Decaffeinated Coffee, Decaffeinated Coffee Process, Decaffeinated Process