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Sucrose

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Sucrose

Postby bio1fall » Sat Oct 10, 2009 3:49 am

What is the process called while sucrose is being produced.. if there is one.

I have a paper due and the question is
Tablesugar what is it made of? Explain it & Give the molecular formula.


I know the formula is
C6h12o6 + C6h12o6 = C12H22o11 + h2o
(Glucose) (glucose) = (sucrose) (water)

but i think i remeber my lab instuctor calling it something.. please help!!

thanks
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Postby JackBean » Sat Oct 10, 2009 7:42 am

what about kondensation?
BTW all the letters should be capital! ;)
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Postby Dougalbod » Sat Oct 10, 2009 3:09 pm

I think you will find that sucrose (C12H22O11)is made of glucose and fructose.

Glusose + glucose produces Maltose.

The formation of sucrose or any disacharide from it's complonents is a "condensation" reaction - (water is produced).


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Postby MrMistery » Sat Oct 10, 2009 7:41 pm

The process is called condensation, although chemists sometimes refer to it as dehydration synthesis.

@Dougalbod
Glucose+glucose can produce one of probably something like a dozen different disaccharides. When the bond is 1->4, it is maltose, when the bond is 1->1 it is trehalose tc.
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Re:

Postby JackBean » Sun Oct 11, 2009 7:02 am

MrMistery wrote:The process is called condensation, although chemists sometimes refer to it as dehydration synthesis.

I think, that dehydration is called only, when the water comes from one molecule, not if are two molecules joined and water produced. In that case it's condensation ;)
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Postby MrMistery » Sun Oct 11, 2009 2:36 pm

you know i think technically you are correct. however, for some reason people DO call it "dehydration synthesis" (I have never heard it being referred to simply as dehydration). Perhaps it is some kind of artifact from long ago when that wasn't the rule.
Anyway, I prefer cndensation anyway, but the term dehydration synthesis is very much in common use (a google search will convince you of that if you don't believe me)
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Postby JackBean » Sun Oct 11, 2009 2:51 pm

OK, I don't say, I don't belive you. I have just never heard it before :)
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Postby carbonbasedlifeform » Wed Oct 21, 2009 5:21 am

It is done through the dehydration reaction in which the hydrogen from one sugar binds with the hydroxyl group of another to form water, creating a glycosidic bond.
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Postby JackBean » Thu Oct 22, 2009 8:26 am

Don't say!
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