Lab Protocol

TLC Thin Layer Chromatography

TLC Thin Layer Chromatography | Principle | Protocol | Applications

Introduction to TLC – Thin Layer Chromatography (TLC) is one of the chromatographic techniques used for isolation, identification and quantification of molecules from complex mixtures. The technique was developed in 20th century and it is still getting evolved with the advancement of technology. It has various application in the field of Chemistry and Biology. This […]

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Plasmolysis

Study and Observation of Plasmolysis phenomenon

“Plasmolysis term is derived from latin word plasma meaning matrix and lysis means loosening i.e. loosening of cell matrix”. Aim – To study and observe the plasmolysis phenomena of plant cells in the laboratory conditions. Theory – What is Plasmolysis? Plasmolysis is the process that describes the loss of water resulting in shrinkage of the

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Basic Staining Technique in Microbiology

Basic Staining Techniques in Microbiology

Staining technique is one of the fundamental technique in Microbiology used for observing the microbes under microscopes. The staining technique enhances and bring contrast in microbial specimen against the background making it visible under microscope. In staining, we use different staines and dyes to colour or highlight the specimen allowing us to explore microbial morphology.

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List of Culture Media

Classification and types of Culture Media used in Laboratory

Culture media is a nutrient rich liquid or gel the supports the growth of microorganisms. Microorganisms are omnipresent and grow in variety of habitat and needs varying nutrients. Therefore, we cannot expect or grow different microorganisms in the same media. Based on the requirements of microorganisms, the composition and concentration of nutrients varies. And hence,

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Winogradsky's Column

Winogradsky’s Column – Preparation, Observation & Results

Introduction Winogradsky’s column is used to study cross section of a natural environment in the laboratory. Sergei Winogradsky invented the column in the 1880s. Various ecosystems such as sewage, pond water, soil can be represented in column. It is also used to isolate various photosynthetic bacteria such as purple and green photosynthetic bacteria along with

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Oxidase test

Oxidase Test – Principle, Procedure and Result

Catalase and Oxidase tests are performed to check whether the given microorganism is aerobic or anaerobic. Oxidase Test – Oxidase test is performed to detect the presence of intracellular cytochrome oxidase system in the test organism. The cytochrome oxidase is component of Electron Transport Chain (ETC). Electron transport chain the last step of cellular respiration.

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