Sagar Aryal

Sagar Aryal is a microbiologist and a scientific blogger. He attended St. Xavier’s College, Maitighar, Kathmandu, Nepal, to complete his Master of Science in Microbiology. He worked as a Lecturer at St. Xavier’s College, Maitighar, Kathmandu, Nepal, from Feb 2015 to June 2019. After teaching microbiology for more than four years, he joined the Central Department of Microbiology, Tribhuvan University, to pursue his Ph.D. in collaboration with Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. He is interested in research on actinobacteria, myxobacteria, and natural products. He has published more than 15 research articles and book chapters in international journals and well-renowned publishers.

HPLC- Definition, Principle, Parts, Types, Uses, Diagram

May 23, 2023May 12, 2023 by Sagar Aryal

High Performance Liquid Chromatography (HPLC)

What is High-performance liquid chromatography (HPLC)? High-performance liquid chromatography or commonly known as HPLC, is an analytical technique used to separate, identify or quantify each component in a mixture. The … Read more

Ion Exchange Chromatography- Definition, Principle, Parts, Steps, Uses

May 23, 2023May 9, 2023 by Sagar Aryal

Ion Exchange Chromatography

Chromatography is the separation of a mixture of compounds into their individual components based on their relative interactions with an inert matrix. What is Ion Exchange Chromatography? Ion exchange chromatography … Read more

Carbohydrates- Definition, Structure, Types, Examples, Functions

January 25, 2023January 20, 2023 by Sagar Aryal

Classification of Carbohydrates (Types of Carbohydrates)

Carbohydrates are a group of naturally occurring carbonyl compounds (aldehydes or ketones) that also contain several hydroxyl groups. It may also include their derivatives which produce such compounds on hydrolysis. … Read more

Lipids- Definition, Properties, Structure, Types, Examples, Functions

September 25, 2022September 10, 2022 by Sagar Aryal

Lipids- Properties, Structure, Classification and Functions

Lipids definition Lipids are a heterogeneous group of organic compounds that are insoluble in water and soluble in non-polar organic solvents. They naturally occur in most plants, animals, microorganisms and … Read more

Chromatography- Definition, Principle, Types, Applications

September 20, 2022September 10, 2022 by Sagar Aryal

Chromatography- Principle, Types and Applications

What is chromatography? Chromatography is an important biophysical technique that enables the separation, identification, and purification of the components of a mixture for qualitative and quantitative analysis. The Russian botanist … Read more

DNA Fingerprinting- Principle, Methods, Applications

September 5, 2022September 4, 2022 by Sagar Aryal

DNA Fingerprinting- Principle, Methods, Applications

DNA fingerprinting or DNA profiling is a process used to determine the nucleotide sequence at a certain part of the DNA that is unique in all human beings. The process … Read more

Tryptophan (Trp) Operon

September 5, 2022September 3, 2022 by Sagar Aryal

Trp Operon Structure

Many protein-coding genes in bacteria are clustered together in operons which serve as transcriptional units that are coordinately regulated. It was Jacob and Monod in 1961 who proposed the operon … Read more

Post Translational Modification- Definition, Processing

September 7, 2022September 3, 2022 by Sagar Aryal

Post Translational Modification

Post-translational modifications refer to any alteration in the amino acid sequence of the protein after its synthesis. It may involve modifying the amino acid side chain, terminal amino or carboxyl … Read more

DNA Sequencing- Definition, Principle, Steps, Types, Uses

February 11, 2023September 3, 2022 by Sagar Aryal

DNA Sequencing

DNA sequencing refers to methods for determining the order of the nucleotide bases adenine,guanine,cytosine, and thymine in a molecule of DNA. The first DNA sequence was obtained by academic researchers, … Read more

Lac operon- Definition, structure, Inducers, diagram

September 5, 2022September 2, 2022 by Sagar Aryal

Lac Operon

Lac operon definition The lactose or lac operon of Escherichia coli is a cluster of three structural genes encoding proteins involved in lactose metabolism and the sites on the DNA … Read more