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Why fructose is reducing sugar?
Fructose has a free ketone group.
What functional group is in fructose?
The main functional groups in sugar and other carbohydrates is the carbonyl group and the hydroxyl group. The carbonyl group is composed of the aldehyde and ketone groups.
Does fructose become glucose when eaten?
through isomerization that happens in the liver. remember glucose and fructose have the same molecular formula. so it's just repositioning of OH elimination of ketone part of the fructose.
Is fructose gives positive test with tollens reagent?
Fructose does not give a positive test with Tollens' reagent because it is a reducing sugar that does not have a free aldehyde group capable of reducing the Tollens' reagent. Tollens' reagent is typically used to detect the presence of aldehydes but may not react with fructose due to its ketone functional group.
What would be the composition and properties f the ketohexose derived from fruit jam?
The ketohexose derived from fruit jam would be fructose. Fructose is a monosaccharide with a ketone functional group and six carbon atoms. It is a sweet-tasting sugar commonly found in fruits and honey, and it is metabolized differently in the body compared to glucose.
Why fructose is reducing sugar?
Fructose has a free ketone group.
What functional group is in fructose?
The main functional groups in sugar and other carbohydrates is the carbonyl group and the hydroxyl group. The carbonyl group is composed of the aldehyde and ketone groups.
Why fructose give two product on reduction?
Fructose can yield two products upon reduction because it has both a ketone and an aldehyde functional group. When reduced, fructose can transform into two different isomers: D-fructose can be reduced to D-glucose (an aldehyde) or D-sorbitol (an alcohol). The presence of the ketone group allows for the formation of different products depending on the specific conditions and reagents used in the reduction process. This duality in product formation is a result of the structural flexibility of the fructose molecule.
How glucose convert into fructose through enolization?
The aldehyde of glucose can tautomerize to an enol. The ketone in fructose can tautomerize to the same enol. This enol can return to either keto form under the conditions promoting tautomerization.
Is jam a ketohexose?
This is a 6 carbon sugar containing a Ketone group, such as fructose. Fructose occurs in invert sugar, honey and a great many fruits used in food stuffs, thus it occurs in jam
What are examples of ketoses?
Fructose is a common example of a ketose, as it has a ketone group in its structure. Other examples include ribulose and dihydroxyacetone. These molecules have a carbonyl group (ketone) on the second carbon atom in the chain.
How does the Fischer projection of D-fructose differ from D-glucose?
In the Fischer projection, D-fructose has a ketone functional group on the second carbon, while D-glucose has an aldehyde functional group on the first carbon. Additionally, D-fructose is a ketohexose with a five-membered ring structure, while D-glucose is an aldohexose with a six-membered ring structure.
What carbon is the anomeric carbon in glucose and fructose?
in glucose it is carbon# 1... and in fructose it is carbon# 2... becoz aldehyde and ketone group of glucose and fructose are attached to ist and 2nd carbon respectivally....
Does fructose become glucose when eaten?
through isomerization that happens in the liver. remember glucose and fructose have the same molecular formula. so it's just repositioning of OH elimination of ketone part of the fructose.
What are the differences in the molecular structures of glucose and fructose?
Glucose and fructose are both simple sugars, but they have different molecular structures. Glucose has a six-carbon ring structure, while fructose has a five-carbon ring structure. Additionally, the arrangement of atoms in the two sugars is different, with fructose having a ketone group and glucose having an aldehyde group.
Why fructose gives positive tollen reagent test?
Only aldehydes give a positive Tollens test. However, under the strongly basic conditions of the test, alpha-hydroxy ketones can isomerize to aldehydes, so they will also give a positive Tollens test. Fructose is an alpha-hydroxy ketone.
What is the properties of ketohexose in sugar?
Ketohexoses are a type of sugar with a six-carbon backbone and a ketone functional group at position 2. They are relatively rare in nature compared to aldohexoses like glucose and fructose. Examples of ketohexoses include fructose, tagatose, and sorbose.
