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After hydrolysis did sucrose give a positive test with fehlings test why orwhy not?

Sucrose would not give a positive test with Fehling's reagent after hydrolysis because sucrose is a non-reducing sugar. During hydrolysis, sucrose is broken down into its monosaccharide components (glucose and fructose), which are reducing sugars and can react with Fehling's reagent to give a positive test for reducing sugars.


What are disaccharides y give an example?

Disaccharides are carbohydrates composed of two monosaccharide units linked by a glycosidic bond. An example of a disaccharide is sucrose, which is made up of glucose and fructose units bonded together. Other examples include lactose and maltose.


Can Seliwanoff's test be used to distinguish sucrose from fructose?

Yes, fructose is a ketose, for which Seliwanoff's test is most sensitive. Sucrose is neither entirely a ketose nor an aldose, but is a mixture of both. It will react, but more slowly, producing a much lighter pinkish color.


Give the names of two monosaccharide molecules studied?

Glucose and fructose are two common monosaccharide molecules studied in biochemistry.


Why sucrose does not give a positive Benedict's test but hydrolyzed sucrose does give a positive beneditcts test?

Sucrose is formed from glucose and fructose.Sucrose is formed from glucose and fructose. Glucose and fructose gives positive test for benedict becuz both of them are reducing sugars whereas sucrose is not a reducing sugar so it gives negative test for benedict. On prolonged heating,sucrose will form glucose and fructose (reducing sugars)which ultimately gives a positive result .

Related Questions

What does Hydrolysis give?

hydrolysis gives glucose and fructose


Hydrolysis of maltose will give rise to what?

Hydrolysis of maltose will give rise to two molecules of glucose. Maltose is a disaccharide composed of two glucose molecules joined together, and hydrolysis breaks this bond, releasing individual glucose molecules.


What happens if a disaccharide is hydrolized?

If the glycosidic bond is broken by hydrolysis, a disaccharide will degrade in two monosaccharides. For example, a sucrose will generate one molecule of glucose and one of fructose, lactose will give a molecule of galactose and one of glucose, and maltose, isomaltose, and cellobiose (that differ only in the glycosidic bond) will generate two molecules of glucose.


After hydrolysis did sucrose give a positive test with fehlings test why orwhy not?

Sucrose would not give a positive test with Fehling's reagent after hydrolysis because sucrose is a non-reducing sugar. During hydrolysis, sucrose is broken down into its monosaccharide components (glucose and fructose), which are reducing sugars and can react with Fehling's reagent to give a positive test for reducing sugars.


Can you give me a sentence using the word glucose?

Sucrose is a sugar that breaks down into glucose and fructose.


What is the substance which give blood glucose when hydrolysis?

liver glycogen


What are disaccharides y give an example?

Disaccharides are carbohydrates composed of two monosaccharide units linked by a glycosidic bond. An example of a disaccharide is sucrose, which is made up of glucose and fructose units bonded together. Other examples include lactose and maltose.


Give some examples of organic compounds?

glucose fructose cocaine nicotine testosterone


Can Seliwanoff's test be used to distinguish sucrose from fructose?

Yes, fructose is a ketose, for which Seliwanoff's test is most sensitive. Sucrose is neither entirely a ketose nor an aldose, but is a mixture of both. It will react, but more slowly, producing a much lighter pinkish color.


What should you know about gluctose and fructose to be considered as different compounds?

Glucose belongs to aldoses group i.e it has a aldehyde group in it.. whereas fructose belongs to ketoses group i.e ketonic group is present. so glucose gives +ve test for aldehyde group test & one which doesn't give is fructose.


Give some examples of sugars?

Some popular sugars include glucose, sucrose, fructose, and lactose.


Why fructose is sweeter than glucose?

Fructose and glucose are both monosacharides. Sucrose is a disaccharide containing fru-glu. Both are sweet, but fructose tastes sweeter per mole. I believe 2 times greater. Which is why glucose from corn starch is enzymatically converted to fructose in the production of high fructose corn syrup and sweeteners. The product will give more sweetness. The lower amount of sugar you need in your food and beverages to satisfy your sweet taste, the better. Cheaper and less calories. The reason why. Your tongue has sweet receptors. Fructose has a more optimal structure for binding affinity to the receptor. Which then elicits a neural response; impulse travels to brain telling you it is sweet and how sweet. Other compounds, non-sugars can also bind to the receptor. e.g. Aspartame (derived from the amino acid asparagine), and some proteins. They are non- to low caloric and low tooth decay.