how do they take the caffeine out of decaf coffee?

Question

re phrase the Q,
how do they take the caffeine out of coffee to label it decaf?

Answer 1

http://www.swisswater.com
and more commonly used techniques are:(text from:http://www.publix.com/wellness/notes/Display.do?id=Food_Guide&childId=Coffee)

No matter the variety, all types of coffee contain significant amounts of caffeine, with the exception, of course, of decaffeinated coffee. Decaffeinated coffee is produced by one of two methods. Caffeine can be chemically extracted with the use of a solvent, which must be completely washed out before the beans are dried. Using the Swiss water process, the beans are steamed, then the caffeine-rich outer layers are scraped away. The solvent method compromises the flavor of the coffee. The Swiss water process is considered the most desirable method.

For the most technical explanation, with the chemicals named, and proccess really explained, check out this website, even if you aren't looking for the technical details, it's just neat!: http://antoine.frostburg.edu/chem/senese/101/consumer/faq/decaffeinating-coffee.shtml

Answer 2

They throw the first infusion because thats where the most caffeinne, the second infusion has less caffeinne but tasteless, really. This is the same way they do for making tea decaf

Answer 3

Ok, I read this in Consumer reports so here it goes. Coffee is 98% caffiene free to begin with. There is no such thing as caffiene free. They sinmply make it 995 caffiene free.

Answer 4

I don't drink coffee, I don't know, even if I did drink, I don't think I would search about that matter. Thanks for the two points

Answer 5

http://en.wikipedia.org/wiki/Decaffeination

Answer 6

very carefully

Answer 7

they don't. I do ... wheeew weeeeeeeeeeeeee