0
osazone test is a carbohydrate specific reaction in which carbs react with phenylhydrazine to form osazones i.e. crystals of specific shape. thus the test confirms the presence of a particular sugar.Eg:for sucrose one gets a mixture of glucosazone and fructosazone on the basis of components of sucrose.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What are two aldotetroses that yield the same osazone on reaction with phenyl hydrazine?
D-erythrose and D-threose both yield the same osazone. Likewise, L-erythrose and L-threose yield the same osazone.
Why glucose and fructose form same osazone?
Glucose, Fructose and Mannose give the same osazone because these sugars have the same configuration of carbons 3, 4, 5 and 6. osazone formation only affects carbons 1 and 2.
What is anthrone test for carbohydrates?
The Antrone test is a general test for carbohydrates (like the Molisch test). Thus, all carbohydrates should yield a positive test (green precipitate) in the anthrone reaction.
How many phenylhydrazines are required in osazone reaction?
3
What substance does Iodine test for?
carbohydrates, for one
What is the importance of phenylhydrazine test?
The phenylhydrazine test is also known as the Osazone test. The phenylhydrazine test is used for reducing the amounts of carbohydrates, momosacchstides, and disaccharides.
What Reagents are used in osazone test?
Reagents of Osazone test are 1. Phenylhydrazine mixture consisting of phenyl-hydrazine and anhydrous sodium citrate 2. Orignal solution containing a carbohydrate
What is the general test used for carbohydrates?
i think the general test for carbohydrates is Molisch Test..
What are two aldotetroses that yield the same osazone on reaction with phenyl hydrazine?
D-erythrose and D-threose both yield the same osazone. Likewise, L-erythrose and L-threose yield the same osazone.
Why glucose and fructose form same osazone?
Glucose, Fructose and Mannose give the same osazone because these sugars have the same configuration of carbons 3, 4, 5 and 6. osazone formation only affects carbons 1 and 2.
What is anthrone test for carbohydrates?
The Antrone test is a general test for carbohydrates (like the Molisch test). Thus, all carbohydrates should yield a positive test (green precipitate) in the anthrone reaction.
Why albumin gives positive Molisch test?
Because it is a carbohydrates and molisch test will be positive in the presence of carbohydrates
What is the importance of Molisch's test performed on carbohydrates?
Molisch's Test is a chemical test for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid to produce an aldehyde. Its importance is that it tests the presence of carbohydrates based on their dehydration,
What foods would test positive for carbohydrates?
Bread, pasta, and cereal would certainly "test positive" for carbohydrates.
Why osazone obtained from D-glucose and D-fructose have the same melting points?
glucose and fructose form same osazone crystals because carbon no 1 to carbon no 6 are identical both in glucose and in fructose
Why you used sodium acetate in osazone test?
Anhydrous sodium acetate is added to buffer the phenylhydrazine HCl so that it may function properly. Regards mawaisnawaz@hotmail.com
How many phenylhydrazines are required in osazone reaction?
3
