In this article we will discuss about the Kjeldahl method for the estimation of nitrogen in plants. Principle: Digestion of nitrogenous compounds by concentrated sulphuric acid in presence of catalysts (reduced iron powder, and a mixture of CuSO4 and K2SO4) produces ammonium compound. Further, such ammonium compound when distilled by steam in presence of strong […]
Estimation of Nitrogen by Kjeldahl Method | Plants
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Estimation of Catalase | Enzyme Activity
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In this article you will discuss about the tests for estimation of catalase in plants. Principle: The enzyme catalase is responsible for catalysing the decomposition of H2O into H2O and O2. The assay of enzyme depends on estimation of residual H2O2 by titration with KMnO4. Requirements: (a) Reagents: 1. H2O2 —0.2 volume 2. H2SO4—10% 3. […]
Estimation of Cellulase | Enzyme Activity
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In this article we will discuss about the tests for estimation of cellulase in plants. Principle: Endo-β-1, 4 glucanase acts on carboxymethyl cellulose (CMC) and hydrolyses the β-1, 4 glycosidic bonds in a random manner. As a result, the viscosity of CMC solution is reduced. This is measured in an Ostwald viscometer. Materials: a. Citrate-phosphate […]
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