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   sci.chem      Chemistry and related sciences      55,615 messages   

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   Message 54,463 of 55,615   
   Frank <"frank to Libor Striz   
   Re: alcohol?   
   16 Oct 18 07:22:26   
   
   From: "@frank.net   
      
   On 10/15/2018 10:56 PM, Libor Striz wrote:   
   > Badbob  Wrote in message:   
   >> On 10/15/2018 7:02 PM, Frank wrote:   
   >>> On 10/15/2018 6:52 PM, Badbob wrote:   
   >>>> Sugar molecules have lots of C-O-H on them. Does that mean they are   
   >>>> all alcohols?  Trying to brush up on organic chemistry.   
   >>>>   
   >>>> Bob   
   >>>   
   >>> Sure, anything with C-O-H is an alcohol but these are a special class   
   >>> also containing an aldehyde or ketone group and are all called   
   >>> carbohydrates.  I worked once in a plant that hydrogenated sugars and   
   >>> then with all C-O-H groups the products were called polyols.   
   >>   
   >>     Thanks   
   >>   
   >> What this is leading up to is...is there any fundamental difference   
   >> between "natural" sugars and "alcohol" sugars?  They seem pretty much   
   >> the same to me.   
   >>   
   > "Natural" sugars contain aside of several  alkohol groups  also a   
   >   ketone  or aldehyde group, that partly creates a cycle, reacting   
   >   with the far alcohol group.   
   >   
   > Alcohol sugers do not have such groups. Some of them are used as   
   >   sweeteners, as human  enzymes cannot process them.   
   >   
   > But some bacterias can, so  overused may cause problems.   
   >   
   >   
   Yes, after hydrogenation they are no longer sugars and while the   
   sorbitol and mannitol produced from sucrose can be used as non-caloric   
   sweeteners, too much could cause digestive problems acting like a laxative.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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