Sagar Aryal, PhD

Sagar Aryal is a microbiologist and a scientific blogger. He completed his Ph.D. degree in Microbiology from the Central Department of Microbiology, Tribhuvan University, Kathmandu, Nepal in 2025. He was awarded the DAAD Research Grant to conduct part of his Ph.D. research work for two years (2019-2021) at Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. Sagar is interested in research on actinobacteria, myxobacteria, and natural products. He is the Research Head of the Department of Natural Products, Kathmandu Research Institute for Biological Sciences (KRIBS), Lalitpur, Nepal. Sagar has more than 15 years of experience in blogging, content writing, and SEO. Sagar was awarded the SfAM Communications Award 2015: Professional Communicator Category from the Society for Applied Microbiology (Now: Applied Microbiology International), Cambridge, United Kingdom (UK). Sagar is also the ASM Young Ambassador to Nepal for the American Society for Microbiology since 2023 onwards.

Submerged Fermentation

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Submerged Fermentation

Fermentation is the technique of biological conversion of complex substrates into simple compounds by various microorganisms such as bacteria and fungi. In the course of this metabolic breakdown, they also … Read more

Biochemical Test of Shigella flexneri

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Biochemical Test of Shigella flexneri

Biochemical Test of Shigella flexneri ­Basic Characteristics Properties (Shigella flexneri) Catalase Positive (+ve) Citrate Negative (-ve) Gas Positive (+ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN … Read more

Biochemical Test of Bacteroides fragilis

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Biochemical Test of Bacteroides fragilis

Basic Characteristics Properties (Bacteroides fragilis) Capsule Positive (+ve) Catalase Positive (+ve) Flagella Negative (-ve) Gelatin Hydrolysis Weakly Positive (+ve) Gram Staining Gram-negative (-ve) Growth in Bile (20%) Positive (+ve) Hemolysis … Read more

Degradation and Deterioration

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Degradation and Deterioration

Nature has always provided, in considerable amounts and variety, polymeric materials with interesting compositions and structures. These natural polymers include polysaccharides, such as cellulose, chitin, starch, alginate, galactan, hyaluronic acid, … Read more

Biochemical Test of Bacillus subtilis

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Biochemical Test of Bacillus subtilis

Biochemical Test of Bacillus subtilis ­Basic Characteristics Properties (Bacillus subtilis) Catalase Positive (+ve) Citrate Positive (+ve) Flagella Flagellated Gas Negative (-ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Gram Positive (+ve) … Read more

Biochemical Test of Neisseria gonorrhoeae

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Biochemical Test of Neisseria gonorrhoeae

­Basic Characteristics Properties ( Neisseria gonorrhoeae) Capsule Negative (-ve) Catalase Positive (+ve) Gas Negative (-ve) Gram Staining Negative (-ve) H2S Negative (-ve) Hemolysis Negative (-ve) Nitrate Reduction Negative (-ve) Oxidase … Read more