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Author Topic: Sugar ( mono, complex ) test ???  (Read 15805 times)

Offline someir

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Sugar ( mono, complex ) test ???
« on: 24/08/2006 09:34:48 »
Hi,
How would I know If sugar is inside my Diet Coke or not :-) ,
I mean is there any compound that changes color If I added a drop of COKE ,
and doesnít change color If I added a drop of Diet Coke ?
or might be vise versa.
Please , Bare in mind: Amb. Temp, type of sugar: Mono, Di, Compex )
BR,
Sam


 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #1 on: 24/08/2006 14:56:10 »
You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.
« Last Edit: 24/08/2006 15:05:56 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #2 on: 24/08/2006 16:23:25 »
Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
sam


quote:
Originally posted by ROBERT

You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

newbielink:http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html [nonactive]

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.

 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #3 on: 24/08/2006 16:35:26 »
quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
http://hocks.com/hocks_com_on_line_pharmacy/3133840.html

Let us know if the test strips work on cola (by comparing normal and diet cola).
« Last Edit: 24/08/2006 16:47:32 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #4 on: 24/08/2006 17:53:48 »
Good Link:
newbielink:http://en.wikipedia.org/wiki/Benedict%27s_solution [nonactive]

Quoted from wikipedia.org:

++++++
Benedict's reagent
From Wikipedia, the free encyclopedia
(Redirected from Benedict's solution)
Jump to: navigation, search
Benedict's reagent (also called Benedict's solution or Benedict's test) is a reagent used as a test for the presence of reducing sugars (such as glucose, lactose, and fructose, but not sucrose), or more generally for the presence of aldehydes, in a solution.

Benedict's reagent contains blue copper(II) sulfate (CuSO4) ∑ 5H2O which is reduced to red copper(I) oxide by aldehydes, thus oxidizing the aldehydes to carboxylic acids. The copper oxide is insoluble in water and so precipitates. The colour of the final solution ranges from green to brick red depending on how many of the copper(II) ions are present. Benedict's test cannot be used to detect the presence of aromatic aldehydes.

When Benedict's is used as a chemical test for the presence of reducing sugars in food, the food sample is dissolved in water and about 5ml of the sample solution is added to 5ml of Benedict's qualitative reagent. The mixture is placed in a boiling waterbath for 5 minutes and any precipitate formed is recorded as a positive for the presence of sugar in the food.

The reason sucrose has a negative result in Benedict's solution is because sucrose is a non-reducing sugar when in contact with a base. Benedictís solution cannot break down the bonds of sucrose like other sugars, this would be the opposite if it were an acid.
++++++++++





quote:
Originally posted by someir

Hi,
How would I know If sugar is inside my Diet Coke or not :-) ,
I mean is there any compound that changes color If I added a drop of COKE ,
and doesnít change color If I added a drop of Diet Coke ?
or might be vise versa.
Please , Bare in mind: Amb. Temp, type of sugar: Mono, Di, Compex )
BR,
Sam


 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #5 on: 24/08/2006 19:46:26 »
quote:
Originally posted by ROBERT

quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
newbielink:http://hocks.com/hocks_com_on_line_pharmacy/3133840.html [nonactive]

Let us know if the test strips work on cola (by comparing normal and diet cola).




Thanks Dear it worked !!!
the test shows that Diet coke has no sugar, and the normal coke has a lot of it !!!

BR,
sam
 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #6 on: 24/08/2006 14:56:10 »
You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.
« Last Edit: 24/08/2006 15:05:56 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #7 on: 24/08/2006 16:23:25 »
Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
sam


quote:
Originally posted by ROBERT

You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

newbielink:http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html [nonactive]

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.

 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #8 on: 24/08/2006 16:35:26 »
quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
http://hocks.com/hocks_com_on_line_pharmacy/3133840.html

Let us know if the test strips work on cola (by comparing normal and diet cola).
« Last Edit: 24/08/2006 16:47:32 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #9 on: 24/08/2006 17:53:48 »
Good Link:
newbielink:http://en.wikipedia.org/wiki/Benedict%27s_solution [nonactive]

Quoted from wikipedia.org:

++++++
Benedict's reagent
From Wikipedia, the free encyclopedia
(Redirected from Benedict's solution)
Jump to: navigation, search
Benedict's reagent (also called Benedict's solution or Benedict's test) is a reagent used as a test for the presence of reducing sugars (such as glucose, lactose, and fructose, but not sucrose), or more generally for the presence of aldehydes, in a solution.

Benedict's reagent contains blue copper(II) sulfate (CuSO4) ∑ 5H2O which is reduced to red copper(I) oxide by aldehydes, thus oxidizing the aldehydes to carboxylic acids. The copper oxide is insoluble in water and so precipitates. The colour of the final solution ranges from green to brick red depending on how many of the copper(II) ions are present. Benedict's test cannot be used to detect the presence of aromatic aldehydes.

When Benedict's is used as a chemical test for the presence of reducing sugars in food, the food sample is dissolved in water and about 5ml of the sample solution is added to 5ml of Benedict's qualitative reagent. The mixture is placed in a boiling waterbath for 5 minutes and any precipitate formed is recorded as a positive for the presence of sugar in the food.

The reason sucrose has a negative result in Benedict's solution is because sucrose is a non-reducing sugar when in contact with a base. Benedictís solution cannot break down the bonds of sucrose like other sugars, this would be the opposite if it were an acid.
++++++++++





quote:
Originally posted by someir

Hi,
How would I know If sugar is inside my Diet Coke or not :-) ,
I mean is there any compound that changes color If I added a drop of COKE ,
and doesnít change color If I added a drop of Diet Coke ?
or might be vise versa.
Please , Bare in mind: Amb. Temp, type of sugar: Mono, Di, Compex )
BR,
Sam


 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #10 on: 24/08/2006 19:46:26 »
quote:
Originally posted by ROBERT

quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
newbielink:http://hocks.com/hocks_com_on_line_pharmacy/3133840.html [nonactive]

Let us know if the test strips work on cola (by comparing normal and diet cola).




Thanks Dear it worked !!!
the test shows that Diet coke has no sugar, and the normal coke has a lot of it !!!

BR,
sam
 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #11 on: 24/08/2006 14:56:10 »
You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.
« Last Edit: 24/08/2006 15:05:56 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #12 on: 24/08/2006 16:23:25 »
Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
sam


quote:
Originally posted by ROBERT

You can buy test strips from a pharmacy which are used to measure glucose levels in the urine of diabetics.
The tab on the end of the test strip changes colour after being dipped in urine (or Coke in this case),
this colour is compared to a scale on the container to estimate the sugar (glucose) concentration.

newbielink:http://hocks.com/hocks_com_on_line_pharmacy/gluc100.html [nonactive]

You could try testing normal (not diet) Coke to confirm that the test strips designed to test urine work with Cola.

 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #13 on: 24/08/2006 16:35:26 »
quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
http://hocks.com/hocks_com_on_line_pharmacy/3133840.html

Let us know if the test strips work on cola (by comparing normal and diet cola).
« Last Edit: 24/08/2006 16:47:32 by ROBERT »
 

Offline someir

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Re: Sugar ( mono, complex ) test ???
« Reply #14 on: 24/08/2006 17:53:48 »
Good Link:
newbielink:http://en.wikipedia.org/wiki/Benedict%27s_solution [nonactive]

Quoted from wikipedia.org:

++++++
Benedict's reagent
From Wikipedia, the free encyclopedia
(Redirected from Benedict's solution)
Jump to: navigation, search
Benedict's reagent (also called Benedict's solution or Benedict's test) is a reagent used as a test for the presence of reducing sugars (such as glucose, lactose, and fructose, but not sucrose), or more generally for the presence of aldehydes, in a solution.

Benedict's reagent contains blue copper(II) sulfate (CuSO4) ∑ 5H2O which is reduced to red copper(I) oxide by aldehydes, thus oxidizing the aldehydes to carboxylic acids. The copper oxide is insoluble in water and so precipitates. The colour of the final solution ranges from green to brick red depending on how many of the copper(II) ions are present. Benedict's test cannot be used to detect the presence of aromatic aldehydes.

When Benedict's is used as a chemical test for the presence of reducing sugars in food, the food sample is dissolved in water and about 5ml of the sample solution is added to 5ml of Benedict's qualitative reagent. The mixture is placed in a boiling waterbath for 5 minutes and any precipitate formed is recorded as a positive for the presence of sugar in the food.

The reason sucrose has a negative result in Benedict's solution is because sucrose is a non-reducing sugar when in contact with a base. Benedictís solution cannot break down the bonds of sucrose like other sugars, this would be the opposite if it were an acid.
++++++++++





quote:
Originally posted by someir

Hi,
How would I know If sugar is inside my Diet Coke or not :-) ,
I mean is there any compound that changes color If I added a drop of COKE ,
and doesnít change color If I added a drop of Diet Coke ?
or might be vise versa.
Please , Bare in mind: Amb. Temp, type of sugar: Mono, Di, Compex )
BR,
Sam


 

Offline someir

  • First timers
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  • Posts: 4
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Re: Sugar ( mono, complex ) test ???
« Reply #15 on: 24/08/2006 19:46:26 »
quote:
Originally posted by ROBERT

quote:
Originally posted by someir

Thanks Dear ,
In fact, I was thinking about that :-) ,
but I thought that theses strips works
on ketons ( I mean metabolized glucose ) ,
but I will try this any way ,
since it is handy solution, and really cheap...
i will let you know about the result soon ...
Many thanks again ,
Sam



You can get multi-purpose test strips which test urine for the presence of:-
Ketones, glucose, blood, leukocytes, protein, etc.
They are more expensive than the glucose-only test strips.
newbielink:http://hocks.com/hocks_com_on_line_pharmacy/3133840.html [nonactive]

Let us know if the test strips work on cola (by comparing normal and diet cola).




Thanks Dear it worked !!!
the test shows that Diet coke has no sugar, and the normal coke has a lot of it !!!

BR,
sam
 

ROBERT

  • Guest
Re: Sugar ( mono, complex ) test ???
« Reply #16 on: 25/08/2006 11:53:22 »
Someir, thanks for letting us know these test strips work on cola.

I am probably being over cautious but...
you should not drink cola which has been in contact with the test strip, as reagent chemicals could have contaminated the cola and they may be toxic. You should immediately discard any cola which could have been contaminated in this way to avoid accidental ingestion by yourself or others.
« Last Edit: 25/08/2006 12:14:09 by ROBERT »
 

The Naked Scientists Forum

Re: Sugar ( mono, complex ) test ???
« Reply #16 on: 25/08/2006 11:53:22 »

 

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