Found 2 Articles for Biomolecules

Fehling Test

Praveen Varghese Thomas
Updated on 25-Apr-2023 17:34:22
Introduction Fehling’s test is possible in presence of certain organic functional group with the help of following reacting agent as mentioned below − Carbohydrates with free C=O (carbonyl) group i.e. aldehyde or ketones can possibly behave as a reducing sugars. Fehling’s solution is mixture of $\mathrm{CuSO_4\:, \:NaOH}$, (strong alkali), and potassium sodium tartarate which is deep blue in colour. On heating the test sample with Fehling’s solution, oxidation occurs by bistartarocuparate(II) complex which oxidises aldehydes into carboxylic acid. Reduction occurs of copper(II) ion complex and forms red or yellow insoluble precipitate of $\mathrm{Cu_2O}$ [cuprous(I) oxide]. By oxidation of ... Read More


Bitopi Kaashyap
Updated on 12-Jan-2023 15:46:46
Introduction One of the most important types of carbohydrates is polysaccharides in which starch, cellulose, glycogen and some more elements are included. Polysaccharides are key structural components of a plant cell. Different types of monosaccharide are important in developing different polysaccharides. Each polysaccharide possesses an immense significance that is helpful in maintaining the source of energy. Definition: Polysaccharides Complex carbohydrates are commonly known as polysaccharides that are formed with a chain of monosaccharide. The chains are attached with a bond and these chains are glycoside. There are two main fundamental types of polysaccharides, namely, heteropolysaccharides and homopolysaccharides.Starch is considered one ... Read More