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What makes maltose and lactose reducing sugar while sucrose is not?
Wiki User
∙ 11y ago
Even though both molecules are disaccharides, the position of their anomeric carbons changes their reducing potential. Since maltose's anomeric carbon is free, it allows for the opening of its ring structure, and the subsequent reducing of the metal ions (like those used in Fehlding's solution). Since sucrose's anomeric carbon is used to bind the fructose and glucose molecules that it is comprised of, it does not have this option, making it a non-reducing sugar.
Hope that helps!
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoMaltose and lactose both has reducing ends to them due to a free anomeric carbon. Sucrose's carbon is not free.
This because sucrose is a disaccharide composed of an aldose and a ketose, the latter of which forms a five member ring (instead of 6) with the sixth carbon hanging off the end of the ring, attached to what would be considered a "free anomeric" carbon.
Maltose and lactose are both composed of two aldoses, which both form 6 member rings and have no carbons attached to the end of either ring.
Wiki User
∙ 13y agoThis site might help explain it. its where i got my answer, tutorvista.com
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What are the sources of reducing and non reducing sugars?
Reducing sugarsThis glucose component makes it a reducing sugar. Lactose is found in human and cow milk. This glucose base makes maltose a reducing sugar. It can be found naturally in germinating grain, starches, and corn syrup in small amounts.Non reducing sugarsExamples include glucose,fructose, maltose and lactose. Those sugars which are unable to reduce oxidizing agents such as those listed above are called non-reducing sugars.
What makes up a dissaccharide?
disaccharide (one of the two simple sugar carbohydrates)Surose(glucose + fructose)Lactose(galactose + glucose)Maltose(glucose + glucose)
The simple fruit sugar that makes up half of the sucrose molecule?
Fructose.
Why is the first carbon in glucose a reducing while the fourth carbon is not?
The first 1C-OH is chemically originating1) from an aldehyd (which is reducing)the fourth (and all other) 4C-OH are from alkanolic origin (non-reducing).1) 'Pyranose ring closure' of -1C=O with -5C-OH to hemi-acetal formation of-1C(OH)-O-5C- is a easily reversible reaction.It's not the (OH) but the -O- which makes it reducing.
What makes up table sugar?
Carbon, hydrogen and oxygen are the only elements that make up sugars.
What are the sources of reducing and non reducing sugars?
Reducing sugarsThis glucose component makes it a reducing sugar. Lactose is found in human and cow milk. This glucose base makes maltose a reducing sugar. It can be found naturally in germinating grain, starches, and corn syrup in small amounts.Non reducing sugarsExamples include glucose,fructose, maltose and lactose. Those sugars which are unable to reduce oxidizing agents such as those listed above are called non-reducing sugars.
How does the molecular formula for sucrose compare to maltose?
Both sucrose and maltose have the same molecular formula, C12H22O11. What makes them different, however, is the structure these atoms take in the molecule.
What makes up a dissaccharide?
disaccharide (one of the two simple sugar carbohydrates)Surose(glucose + fructose)Lactose(galactose + glucose)Maltose(glucose + glucose)
What makes you lactose intolorent?
The reason you get lactose intolarence is because you dont have enough enzimes to digest the lactose.
What compound is produced as a result of mixing amylase with an aqueous solution of starch?
Maltose. Water and Starch mixed with amylase makes maltose
What makes maltose?
is a disaccharide formed from two units of glucose. Maltose can be broken down into two glucose molecules by hydrolysis.what are some properties of maltose?Maltose is a malt sugar. The molecular formula for maltose is C12H22O11.
What does glucose make?
Glucose makes maltose, starch and cellulose.
What makes up sucrose?
glucose and fructose
Why do yeast cells grow faster in cellular respiration?
Maltose has a higher rate of reaction with yeast than sucrose this is because maltose is made up of 2 glucose monosaccharides while sucrose is made up of a glucose monosaccharide and a fructose monoshaccharide and also glucose is a hexagon while fructose is a pentagon which makes them structurally different
What is the purpose of lactose in the macconkey agar?
to differentiate between the lactose fermented bacteria or non- lactose fermented bacteria
What does lactose and water make?
it makes fructose
Where can you get lactose free ice cream?
The Lactaid company now makes lactose-free ice cream in several flavors.
