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Baroque Bloke |
An Interesting article: “… A simple cup of coffee contains hundreds of complex substances. Caffeine gets the blame for raising blood pressure, but the disparity between espresso and pure caffeine suggests there is more to the story. The decaffeinated espresso proved the point. It did not raise blood caffeine levels, but it boosted the average systolic blood pressure of the nondrinkers by 12 mm Hg, virtually as much as the high-test brew. …” www.health.harvard.edu/heart-h..._your_blood_pressure Serious about crackers | ||
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I Deal In Lead |
Couldn't read it as I'm not a subscriber, but you're saying the article says decaf expresso raised systolic pressure in people? If so, then it's not caffeine that's the culprit, but something else in coffee beans. | |||
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| Baroque Bloke |
Serious about crackers | |||
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| Member |
apparently what's advertised as decaffeinated isn't always decaf!! | |||
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Member |
...Researchers purchased 10 16-ounce decaffeinated cups of drip coffee from coffee shops and restaurants and analyzed them for caffeine content. They found all but one -- decaffeinated Folgers Instant, purchased at a Krystal fast-food restaurant -- contained caffeine. The caffeine content ranged from 8.6 milligrams to 13.9 milligrams. That's about a tenth of the caffeine found in an 8-ounce cup of regular drip-brewed coffee, which contains about 85 milligrams of caffeine... Link Collecting dust. | |||
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The Unmanned Writer |
Did Starbucks and Folgers sponsor the research?  Life moves pretty fast. If you don't stop and look around once in a while, you could miss it. "If dogs don't go to Heaven, I want to go where they go" Will Rogers The definition of the words we used, carry a meaning of their own... | |||
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| Member |
Coffee is decaffeinated by roasting it dark and washing it. The darker the coffee, the less caffeine. Expresso, although many believe otherwise, has lowered amounts due to its being dark. Ive never heard of decaffeinated expresso. | |||
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Fighting the good fight |
No, coffee is decaffeinated while the beans are still green (unroasted), by soaking them in water and then using either chemical solvents, activated carbon, or pressurized carbon dioxide to strip the caffeine. Roasting comes later.
Probably because there's no such thing as expresso, decaffeinated or otherwise. 
A shot of espresso has less caffeine than a cup of coffee due to its decreased serving size. It actually has much greater caffeine content by volume than traditional brewed coffee, it's just that it's typically served in 1 ounce shots instead of 8 ounce cups. A 1 ounce shot of espresso averages around 60ish milligrams of caffeine (~60 mg/oz). An 8 ounce cup of coffee averages around 100ish milligrams of caffeine (~12.5 mg/oz). That's about 5x more concentrated. | |||
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