Ninhydrin test Archives | Microbe Notes

Ninhydrin Test- Definition, Principle, Procedure, Result, Uses

November 19, 2020 by Anupama Sapkota

Ninhydrin Test Definition Ninhydrin test is a chemical test performed to detect the presence of ammonia, primary/secondary amines, or amino acids. This test involves the addition of ninhydrin reagent to the test sample that results in the formation of deep blue color, often termed as Ruhemann’s purple, in the presence of an amino group. Objectives of Ninhydrin Test To detect …

Amino Acids- Properties, Structure, Classification and Functions

January 12, 2020August 9, 2018 by Sagar Aryal

Amino acids constitute a group of neutral products clearly distinguished from other natural compounds chemically, mainly because of their ampholytic properties, and biochemically, mainly because of their role as protein constituents. An amino acid is a carboxylic acid-containing an aliphatic primary amino group in the α position to the carboxyl group and with a characteristic stereochemistry. Proteins are biosynthesized from …

Proteins- Properties, Structure, Classification and Functions

February 4, 2021August 6, 2018 by Sagar Aryal

Proteins are the most abundant biological macromolecules, occurring in all cells. It is also the most versatile organic molecule of the living systems and occur in great variety; thousands of different kinds, ranging in size from relatively small peptides to large polymers. Proteins are the polymers of amino acids covalently linked by the peptide bonds. The building blocks of proteins …