Lab 7: Caffeine Quantification by HPLC

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  1. Chemical Methods of Food Analysis
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Lab 7: Caffeine 0:28:14

Lab 7: Caffeine Quantification by HPLC

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Pre-Lab Lecture: HPLC 0:36:56

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DETERMINING CAFFEINE CONCENTRATION 0:19:55

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Determination of caffeine 0:05:19

Determination of caffeine using HPLC

Pre-Lab Lecture: Acetaminophen 0:41:33

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Determination of Caffeine 1:06:07

Determination of Caffeine Content Using HPLC

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Chemistry - Determination 0:08:11

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The caffeine curve 0:00:25

The caffeine curve

Kofeiinin määritys 0:08:21

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Analogy to explain 0:00:23

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13 Analysis of 0:03:23

13 Analysis of Caffeine in Coffee by Fendler Stuber method

HPLC Analysis of 0:29:20

HPLC Analysis of Caffeine in Coffee Beverages

The Extraction of 0:02:21

The Extraction of Caffeine from Tea Leaves Part 3: Solvent Extraction

Chemistry - Determination 0:14:47

Chemistry - Determination of Caffeine Content in Soft Drinks Spectrophotometrically Theory Part - 3

Buck Scientific - 0:09:15

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March 24, 2020 0:58:44

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Комментарии
Автор

Thank you, you answered some ogf my questions! Thanks for uploding. Amazing explanation. Cheers from Poland~!

EmeraldValleyway
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thank youuu. this is so easy to understand TT

eshpreetkaur
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Hi, can you tell more about the mobile phases, and column? I am guessing you are using C18 column running isocratic mobile phases but what are the mobile phases? Is that MPA: Water and MPB: ACN or MeOH? Any Ph modifier? Thank you.

motiv-
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Wait why do we use the peak area 1153.2 ?

tulip
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Hello. Do I need to plot the zero point? In my graph, if the line starts in another point than zero, the results are different and do not make sense to me. Could you help me?

henriqueisaia
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Thank you for this 👍👍👍 Tomorrow I'll have an exam on this topic (I hope🤡)

tulip
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how can i read a whole experimental research article and know these kind of instruments (HPLC) and in the article they don’t even tell u it’s a device they just put shortcuts !ah! I’m reading throu bc i need to summarize it and do a presentation on it and present in front of a whole class and I’m just a 3rd semester chemistry stu I’m gon blow up

씨발-cb
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hello, could you please help me to determine Np by HPLC

fahimesharifi
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What is that word you’re saying in reference to the alpha and beta acids? “Prenalated”?

jvanvynck