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The Ehrlich test is used to determine indoles.
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What funtional group will give a positive results with ninhydrin reagents?
Amino acids with a free -NH2 group and proteins containing free amino acids
All amino acid having an aromatic ring give a positive xanthoproteic test under identical condition?
yes! but actually for phenylalanine it just weakly positive or negative because the aromatic ring is not activated so it is not give the positive result...phenylalanine need certain condition to give positive result
Why amino acids give yellow colour with nitric acid?
In this reaction the yellow xanthoproteic acid is formed.
How can only four bases in RNA carry instructions for 20 different amino acids?
The properties of proteins are determined by the order in which different amino acids are joined together to produce polypeptides. The genetic code is read three letters at a time, so that each "word" of the coded message is three bases long.
What components of protein give a positive test with Millon's reagent and on what is this reaction based?
amino acid
What funtional group will give a positive results with ninhydrin reagents?
Amino acids with a free -NH2 group and proteins containing free amino acids
Will superpump 250 give a positive drug test?
NO its just caffein and amino acids.
Give an example of polypeptide?
Protein.
Will glutamic acid give a positive biuret test?
Amino acids doesn't react with the biuret reagent.
What color develops when ninhydrin react with amino acids?
These are the amino acids that will yield positive result to the ninhydrin test: Non-polar amino acids: Glycine, Alanine, Valine, Leucine, Isoleucine, Phenylalanine, Methionine, Tryptophan Polar Neutral Amino acids: Serine, Cysteine, Threonine, Asparagine, Glutamine, Tyrosine Polar Acidic Amino Acids: Aspartic acid and Glutamic acid Polar Basic Amino Acids: Histidine, Lysine, Arginine
Will amino energy give me a positive reading on drug test?
No. Amino acids are the building blocks of protein; if they'd make you fail a drug test everyone would fail every drug test they take because not only do you eat protein, your body makes many amino acids on its own.
Will Alanine give a negative Biuret test?
Because solutions with "free" amino acids don't have peptide bonds and peptide bonds need to be present in order for the test to be positive.
All amino acid having an aromatic ring give a positive xanthoproteic test under identical condition?
yes! but actually for phenylalanine it just weakly positive or negative because the aromatic ring is not activated so it is not give the positive result...phenylalanine need certain condition to give positive result
What consist of long chain of amino acids?
Proteins contain long chains of amino acids. The amino acids in protein are what give proteins their high energy content.
Principle of ehrlich's test?
Indole ring of tryptophan reacts with para methyl amino benzaldehyde under acidic condition to give a purple colour complex.
What foods give you amino acids?
Penuts, meat, fish, things with lots of proteins
Detect peptide bond?
by conducting the biuret test. the positive result of biuret test will give you the purple blue ring on top of the solution.(albumen/milk + cuso4 +NaOH)
