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Yes. Within "The Chemical Reactions of Amino Acids / Reactions of Amino Groups" there are several examples - one of which is the ninhydrin reaction. A very widely applied reaction of the alpha amino group [that is the N in the peptide bond -CCN-CCN-], it is used to estimate the quantity of amino acids [in a sample] in very small amounts.
All amino acids and polypeptides with a free alpha group react with ninhydrin and yield [or produce] an intensely purple colored product - except for Proline and Hydroxyproline {both in which the alpha amino group is termed to be 'substituted' - something to do with carbon rings} which "yield derivatives with a characteristic yellow color."
See also 'Schiff's bases'.
What else can I help you with?
Why proline gives yellow color with nin hydrin?
Proline reacts with the ninhydrin reagent to form a yellow-colored complex. This complex is a result of a chemical reaction between proline and ninhydrin, leading to the formation of a chromophore that absorbs light in the visible spectrum, resulting in the yellow color.
Why amino acids give yellow colour with nitric acid?
When amino acids react with nitric acid, a yellow color may be observed due to the formation of nitro compounds. Nitric acid can nitrate amino acids, leading to the production of yellow-colored nitro derivatives. The specific yellow color observed can vary depending on the amino acid present and the reaction conditions.
What colour do you get when you mix black and yellow?
You could get a mossy green colour (colour of the bag below) though it can change depending on how much yellow you put in.
What is the colour of potassium superoxide?
Potassium superoxide is yellow in color.
What is the opposite color of purple?
The opposite of the colour purple on a colour wheel is yellow. To figure this out you need to understand the concept of primary and secondary colours. If the colour you have is a primary colour (one of red, yellow or blue) then the opposite colour is the secondary colour resultant from mixing the two remaining primary colours. If the colour you have is a secondary (purple, green or orange) then the opposite colour is the primary not involved in the making of the secondary colour.
Why proline gives yellow color with nin hydrin?
Proline reacts with the ninhydrin reagent to form a yellow-colored complex. This complex is a result of a chemical reaction between proline and ninhydrin, leading to the formation of a chromophore that absorbs light in the visible spectrum, resulting in the yellow color.
What color will be produced by proline with ninhydrin?
When ammonia or primary and secondary amines are detected, a deep blue or purple color known as Ruhemann's purple is produced. Ninhydrin can also be used to monitor deprotection in solid phase peptide synthesis (Kaiser Test). The chain is linked via its C-terminus to the solid support, with the N-terminus extending off it. When that nitrogen is deprotected, a ninhydrin test yields blue. Amino-acid residues are attached with their N-terminus protected, so if the next residue has been successfully coupled onto the chain, the test gives a colorless or yellow result.
What group in amino acids or proteins in general is responsible for the ninhydrin reaction?
The amino group (-NH2) present in the amino acids/proteins is responsible for the ninhydrin reaction. Ninhydrin reacts with this group to form a colored compound, which is used in assays to detect amino acids.
Result of casein in ninhydrin test?
Casein is a protein that contains amino acids, and when subjected to the ninhydrin test, it will generally produce a yellow or orange color due to the reaction between the amino acids in casein and ninhydrin. This color change is characteristic of the presence of proteins and can be used as a qualitative test for the detection of proteins like casein.
What is the molecular formula of ninhydrin?
Well, the best I could come up with is it's either:C9H6O2orC4H3O2If someone knows any different please correct me.jman63: it is actually C9H6O4
What is the Triple sugar iron test results for klebsiella pneumoniae?
butt colour and reaction - yellow slant colour and reaction - yellow carbohydrate fermented - glucose only H2S production :- blackening- NO H2S - (-) negative
What colour is a canary?
yellow and green
What is alesha dixions favorite colour?
yellow yellow yellow yellow
What color hair did Roald Dahl have?
yellow it was also his favorite colour.
What is Spanish for the colour yellow?
Yellow = Amarillo
Why do yellow jackets look yellow?
Bcs its in yellow colour
What colour do you get if you mix yellow and red?
It Makes the Colour Orange
