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What functional group must be present for the ninhydrin test to work?
Wiki User
∙ 10y ago
Ninhydrin works because it reacts with the amino acids left behind in a latent print.
Ninhydrin has a polar carbonyl carbon with is electron deficient. It is attacked by the nucleophilic nitrogren on an amino acid, temporarily combining the ninhydrin and amino acid molecule. The structure is rearranged until the origionally attacked carbon is protonated and leaves in the form of water. This creates a schiff base when the nitrogen is double bonded to the origionally attacked carbon. This molecule rearranges again so that the nitrogen is double bonded to the adjacent carbon of the amino acid. This last rearrangement produces carbon dioxide gas. Further rearrangement of the product produces ruheman's purple.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agochemical that used to detect protein or specific to detect ammonia and amine.these reaction will formed a dark blue or purple colour
Wiki User
∙ 12y agoNinhydrin is used to determine the presence of lysine.
Wiki User
∙ 13y agoNinhydrin Test is a neurological test of sensation following peripheral nerve injury. Positive would be that there is nerve damage.
Wiki User
∙ 10y agoAmines (including a-amino acids) must be present in order for the ninhydrin test to work.
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What is the chemical treatment of an empty jewelry box is knocked over on a table?
If fingerprints remain they must be collected with an adequate substance, as ninhydrin.
What do Aldehydes and ketones both contain?
Every aldehyde and ketone contains a carbonyl bond which is >C=O , and at least one carbon atom (and a ketone must have at least three carbon atoms).
Which two substances must be present for an iron object to rust?
For the oxidation of iron to occur, that is for ferric oxide to form, there must be oxygen present. There must also be water present.
What must be present in the urine to have the condition ketonuria?
Ketones.
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ovaries
Why egg albumin and casein did not react ninhydrin reagent?
It should react to this reagent. However it must be HEATED before it will react.This is due to the fact that when Ninhydrin is heated it stabilizes and the reacts with the -NH2 groups on the amino acid.
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common interests
What must be present for a group to be considered a nation?
C. A political entity or physical boundaries
What must be present for a group to be consider a nation?
C. A political entity or physical boundaries
What must be present for a group to be a considered a nation?
C. A political entity or physical boundaries
What is the chemical treatment of an empty jewelry box is knocked over on a table?
If fingerprints remain they must be collected with an adequate substance, as ninhydrin.
What formulas represents an aldlehye?
any with a hydrocarbon (R) bonded to CHO. the CHO functional group must be at the end of the formula, not in between hydrocarbons like a ketone
What are the five functional prerequisites that a society must satisfy if it is to survive?
The functional prerequisites that a society must satisfy if it is to survive include the following:AdaptionGoal AttainmentIntegrationPattern Maintenance
What is the present tense of the verb must?
Must is the present tense. I must You must He,She and It must We must You must They must
What is functional requisite of a social system?
Functional Requisites are basic functions that must be carried out for societies to survive and thrive.
What must be present for to erosion to occur?
a transporting agent, such as water must be present
If a molecule is an ene-one what functional groups must it have?
Ketone and Alkene
