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Seliwanoff's test is used to differentiate aldose [glucose] from ketose [fructose]. Seliwanoff's reagent is composed of resorcinol and HCl. When heated with concentrated hydrochloric acid, the polysaccharides and oligosaccharides hydrolyze to yield monosaccharides. Then, resorcinol reacts in the dehydrated ketose to form oxymethylfurfurol produce a deep cherry red color [red precipitate]. Aldoses produces a faint pink colored solution.
Wiki User
∙ 13y ago
Wiki User
∙ 7y agoThe Benedict's test will show the presence of reducing sugars such as fructose and glucose, but will not distinguish between them. Seliwanoff's test will detect non-reducing sugars, of which fructose and sucrose are common examples.https://en.wikipedia.org/wiki/Seliwanoff's_test
There are various other tests which can identify fructose by the combination of their results. However chromatography will identify all the simple sugars present.
Wiki User
∙ 7y agoThe Benedict test is largely used.
Wiki User
∙ 7y agoYou can use the Benedict or Fehling test.
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What Term is used to identify the presence of the amount of?
definitive
State a test for the presence of hydrogen?
The burning splint test is used to test for the presence of hydrogen. The symbol for hydrogen is H.
Which test used to test fructose and galactose?
Fermentation: Hexoses (six carbon sugars), with the exception of galactose, are fermented to carbon dioxide and ethanol by the action of yeast. Benedict's Test: Fructose reacts very rapidly, galactose more slowly
What is the family name ending for sugar?
The suffix used to identify sugars is -ose.As is glucose, dextrose, sucrose, fructose, maltose
Which on is used to detect and identify the presence of liquid chemical agents?
M8 paper
Inulin is a polysaccharide composed entirely of fructose units.Which test be used to identify the presence of fructose?
You will have to do a test to find out if fructose is in the product. You can do this with some test strips.
What is done in a Benedict test?
The Benedict test is a chemical test used to identify the presence of simple sugars such as glucose, fructose, and lactose. It is a qualitative test that is used to differentiate between monosaccharides and disaccharides. To perform a Benedict test, a sample is mixed with Benedict's reagent, which is a solution of sodium citrate and copper sulfate. The mixture is then heated and the formation of a red-brown precipitate indicates the presence of one of the three simple sugars. The following list describes the specific tests used to identify each of the sugars: Glucose Appearance of a brick-red precipitate Fructose Appearance of an orange-red precipitate Lactose Appearance of a yellow-brown precipitateThe Benedict test is a simple, inexpensive, and reliable way to identify the presence of simple sugars in a sample.
Why is the flame test used?
To identify the presence of certain metal ions, such as sodium and caesium.
Account for the presence of a black precipitate in the Nylander's test?
The black precipitate is metallic bismuth. It is formed when glucose or fructose reduces the bismuth oxynitrate in an alkaline state.
How do you test for salt presence?
what is used to test for the presence of salt in water
What Term is used to identify the presence of the amount of?
definitive
State a test for the presence of hydrogen?
The burning splint test is used to test for the presence of hydrogen. The symbol for hydrogen is H.
What is the difference between fehling and Benedict test?
The Fehling test is used to detect glucose, aldehydes and ketones. Benedict's test is used to determine the presence of reducing sugars such as fructose, glucose, maltose and lactose. It is also used to test for the presence of glucose in urine. The two tests are not exactly the same.
What is the purpose for iodine test?
The Iodine test is used to test for the presence of starch.
What is used to test for the presence of lodine?
Starch.
What is M8?
It is used to detect and identify the presence of liquid chemical agents.
What is the chemical used to test for the presence of starch?
The chemical used to test for the presence of starch is iodine.
