April 03, 2021, 08:40 AM
Pipe SmokerCaffeine and blood pressure
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_pressureApril 03, 2021, 10:52 AM
Flash-LBCouldn'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.
April 03, 2021, 11:34 AM
Pipe Smokerquote:
Originally posted by Flash-LB:
Couldn't read it as I'm not a subscriber, but you're saying the article says decaf expresso raised systolic pressure in people?
Me: I found the article with a google search for:
“blood pressure” caffeine
That found the whole article – the 2nd hit. But when I click on the link in my post, I see only first part of it. Then the notice to login. Try my search phrase. /Me
If so, then it's not caffeine that's the culprit, but something else in coffee beans.
Me: Yeah, that’s the point of the article excerpt in my post. /Me
April 03, 2021, 12:43 PM
airbubbaapparently what's advertised as decaffeinated isn't always decaf!!
April 03, 2021, 03:30 PM
cparktd...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...
LinkApril 03, 2021, 03:49 PM
LS1 GTODid Starbucks and Folgers sponsor the research?
April 03, 2021, 03:55 PM
FredwardCoffee 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.
April 03, 2021, 04:25 PM
RogueJSKquote:
Originally posted by Fredward:
Coffee is decaffeinated by roasting it dark and washing it. The darker the coffee, the less caffeine.
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.
quote:
Originally posted by Fredward:
Ive never heard of decaffeinated expresso.
Probably because there's no such thing as expresso, decaffeinated or otherwise.
quote:
Originally posted by Fredward:
Expresso, although many believe otherwise, has lowered amounts due to its being dark.
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.