How much caffeine in coffee?
Video Statistics and Information
Channel: Periodic Videos
Views: 1,444,714
Rating: 4.9092751 out of 5
Keywords: Coffee (Industry), caffeine, caffiene, coffee, tea, chocolate, chemistry, periodicvideos, periodic table, periodic table of videos, professor, martyn poliakoff, nottingham, chemicals, elements
Id: Xzh-6ZDitQ8
Channel Id: undefined
Length: 11min 6sec (666 seconds)
Published: Tue Jul 17 2012
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6 cups is not a proper measurement here. You'll get the same amount of caffeine in 1 cup as you do 6 cups (assuming miscibility) if you use the same amount of coffee grounds.
I'd be more impressed with the video if they weighed an amount of coffee beans/coffee grounds and then compared the amount of caffeine to that.
i feel so accomplished that i can finally understand what they're doing instead of doofusly thinking, "oh yeah, i know...some..of these words..."
Great video but I wish they addressed what necessarily went wrong with the extraction. The gentleman who performed the extraction seemed unfazed by the fact that the yield was 100 mg caffeine for 6 cups of coffee. I'm unsure how much coffee they used but on average, 6 fl oz (less than one cup) of home brewed coffee contains ~80-130 mg caffeine alone. 20 fl oz of starbucks coffee (brewed with their double distilled machines) contains over 400 mg caffeine.
I figured they'd end up with more than that from six cups of coffee. Neat video.
I love that the professor can recognize the molecule because it's on everyone's coffee cups.
Like most periodic videos, I love this video. But this seems like a rather poor way to answer the question "how much caffeine is in coffee." There are simply too many steps where caffeine is almost certainly being lost (it gives a minimum, but probably a substantial underestimate). Would have been nice to run it through a HPLC and see what the expected yield should have been.