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Discussions > Espresso > Q and A > Caffeine in...  
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shadowsnuzzy
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Joined: 8 Jan 2011
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Location: Pleasanton
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Posted Wed Jan 9, 2013, 10:34pm
Subject: Caffeine in espresso?
 

How much caffeine is in a standard  2 oz espresso shot. In other words, how much caffeine is in my double shot latte? (each shot is 1 oz)
Is there more caffeine in a cup of coffee?

I drink coffee/lattes at 4pm, and I've noticed when I drink my latte, I have no problem going to sleep by 12, but if I drink a full 10-12 oz of coffee, I can stay up as late as 4am. Is there THAT big of a difference in caffeine?

I ask because I plan on experimenting with a biphasic sleeping schedule and want to schedule my coffee so it does not interfere with sleeping
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NobbyR
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Posted Wed Jan 9, 2013, 11:42pm
Subject: Re: Caffeine in espresso?
 

A double espresso shot usually contains around 200 mg of caffeine, whereas an average cup of drip coffee (i.e. 5 oz) contains up to 120 mg.

 
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shadowsnuzzy
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Posted Wed Jan 9, 2013, 11:51pm
Subject: Re: Caffeine in espresso?
 

so standard coffee shop 10-12 oz is around 250?
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NobbyR
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NobbyR
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Location: Germany
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Posted Wed Jan 9, 2013, 11:59pm
Subject: Re: Caffeine in espresso?
 

Basic cross-multiplication ...

 
***
"This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
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shadowsnuzzy
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Location: Pleasanton
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Posted Thu Jan 10, 2013, 7:04am
Subject: Re: Caffeine in espresso?
 

why do I feel such a significant difference in alertness and sleep restlessness if it's only ~50mg?
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NobbyR
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NobbyR
Joined: 10 Jul 2011
Posts: 2,061
Location: Germany
Expertise: I love coffee

Espresso: Poccino Opus One, Ariete
Grinder: Eureka Mignon Istantaneo
Vac Pot: N/A
Drip: Melitta Linea Unica de Luxe
Roaster: N/A
Posted Thu Jan 10, 2013, 7:13am
Subject: Re: Caffeine in espresso?
 

Maybe it's because milk slows down intestinal caffeine resorption.

 
***
"This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
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john_ertw
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Posted Thu Jan 10, 2013, 9:41am
Subject: Re: Caffeine in espresso?
 

Does anyone know if the amount of caffeine extracted into an espresso based mostly on the grind, specific bean, extraction time, or other?  
Will there be more in a ristretto shot or a normal espresso (assume same weight of beans is used in both cases)?  
Based on this can one say that the caffeine is extracted at a certain point in the pull (i.e., at the start or at the end)?
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shadowsnuzzy
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Joined: 8 Jan 2011
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Location: Pleasanton
Expertise: Just starting

Posted Thu Jan 10, 2013, 11:16am
Subject: Re: Caffeine in espresso?
 

I would think the caffeine presence reflects a logistic model. There's probably a lot more caffeine in the first seconds of extractions vs. the last seconds. And I've heard it varies mostly with dosage and bean origin/roast. Lighter roast have more caffeine, darker roasts less.
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