Separation of Plant Pigments by Paper Chromatography

The separation of plant pigments by paper chromatography is an analysis of pigment molecules of the given plant. Chromatography refers to colour writing. This method separates molecules based on size, density and absorption capacity. Chromatography depends upon absorption and capillarity. The absorbent paper holds the substance by absorption. Capillarity pulls the substance up the absorbent …

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Difference between Rhizosphere and Phyllosphere

The rhizosphere and phyllosphere are the two plant regions, where various microbes inhabit. Besides air, water and soil, plants also provide natural habitats for microbial growth. Each part of the plant encompasses a variety of microorganisms. And, they may impose positive or harmful effects on the plant’s growth events. The rhizosphere is the region surrounding …

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Retrogradation of Starch

Retrogradation of starch is just opposite of the starch gelatinization. Here, the term retrogradation denotes the reversal mechanism. The gelation of starch contains disaggregated starch molecules. But, the disaggregated amylose and amylopectin chains realign during retrogradation of a starch gel. We could see the retrograde starch after a long-term cooling or storage of the starch …

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Thymus Dependent Antigens

Thymus dependent antigens are also called “T cell-dependent antigens” or “TD-Ags”. These are immunogens that induce antibody’s formation. It is one of the types of B-cell antigen. Naturally occurring antigens are T-cell dependent. Thymus dependent antigens are complex in nature. They are multideterminant antigens due to different epitopes on a cell surface. T-cell recognizes some …

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Difference Between Agarose and Polyacrylamide Gel

The difference between agarose and polyacrylamide gel relies upon factors like origin and molecular complexity. Both gels help in biomolecular separation, due to their porous nature. We can separate, identify and purify different biomolecules using agarose and polyacrylamide gels. 1. Origin: Agarose is a natural polymer extracted from several red seaweeds. So, it is a …

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Chlorination in Wastewater Treatment

Chlorination is a disinfection method used in the wastewater treatment plant. It helps in the destruction of microorganisms from the running wastewater. Microorganisms can be pathogenic or non-pathogenic. Wastewater contains pathogenic enteric microorganisms that impose severe health problems. Typhoid, cholera, dysentery etc., are common waterborne illnesses. And wastewater treatment aims to reduce the possibility of …

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