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test-glucose, sucrose starch,carbohy.proteins quantitatively

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test-glucose, sucrose starch,carbohy.proteins quantitatively

Postby snezka18 » Sat Apr 03, 2010 3:59 pm


Its Me again, what a nag am I hehe.

I done more research and now I found out that you can do titration to test how much glucose is in the solution, i get this part now. But i need to test starch, carbohydrates and proteins quantitatively as well, so i am not sure, are there other tests for that?
and if i get it right you just basically time how long it takes for the solution to decolourise. and put the results in a graph but how can the graph tell u the concentration if you are just timing it? this is very complicated topic indeed!!!
hope someone can help me, i would very much appreciate it!!

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Re: test-glucose, sucrose starch,carbohy.proteins quantitatively

Postby devikaA » Sat Apr 03, 2010 6:31 pm

hey m no scientist but one question...why cant u just do colorimetry or use a spectrophotometer for quantitative analysis?? is it coz its like not accurate or is it coz titration is easier?? n how does titration work here??
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Postby JackBean » Mon Apr 05, 2010 6:07 pm

for proteins there are plenty of measurements (look for Bradford e.g.), for starch you could use colorimetric determination with iodine

Cis or trans? That's what matters.
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