Skip to content
J

Jesteena Johney

Publications (8)

Exraction of Secondary Metabolites Using Bacillus endopyticus and Its Applications

S. Kalima, K. Thanga Mariappan, Jesteena Johney & R. Ragunathan · Journal of Pharmaceutical Research International · 2021

Bacillus Species was isolated from a soil sample, the isolate was cultivated, identified and its culture medium was extracted. Specific media called Gibbon’s media used for the cultivation and confirmation of the bacteria. 16S rRNA study was done for the morphological identificat...

Open access Research Article 10.9734/jpri/2021/v33i30B31635

Production and Applications of Secondary Metabolites Extracted from Trichoderma viride

Vaishnavi R, Jeyalakshmi Thanuja K, R. Ragunathan & Jesteena Johney · South Asian Journal of Research in Microbiology · 2025

Aims: To investigate the production, extraction, and characterization of bioactive metabolites from Trichoderma viride, to evaluate their antimicrobial and anticancer potential. This study aims to validate the applicability of Trichoderma viride metabolites as therapeutic and agr...

Open access Research Article 10.9734/sajrm/2025/v19i9460

Fabrication and Characterization of Silver Nanoparticles Produced by the Supernatant of Lactobacillus gasseri and Evaluation of their Potential Biomedical Activity

Nihala K, Maneesha Mohan, Seena P, Jesteena Johney & R. Ragunathan · South Asian Journal of Research in Microbiology · 2025

Aims: This study aimed to synthesize silver nanoparticles (AgNPs) using Lactobacillus gasseri and to evaluate their antimicrobial, anti-biofilm, and cytotoxic properties after formulation into a Carbopol-based nanoemulsion. Study Design: This was an experimental laboratory-based...

Open access Research Article 10.9734/sajrm/2025/v19i8459

Patterns of Bacterial Isolation, Identification and Antibiotic Susceptibility Associated with Infected Wounds: A Prospective Study

Nila Rajan, K. Thanga Mariappan, R. Ragunathan & Jesteena Johney · South Asian Journal of Research in Microbiology · 2025

Aims: To isolate and identify bacteria from infected wounds and determine their patterns of antibiotic susceptibility in order to understand their role in delayed wound healing and overall impact on patient quality of life. Study Design: Descriptive cross-sectional study. Place a...

Open access Research Article 10.9734/sajrm/2025/v19i6440

A Comprehensive Systematic Review of Tridax procumbens. L on Wound Healing and Its Pharmacological Aspects

Vimala Devi S, Lakshmi Prabha, R. Ragunathan & Jesteena Johney · South Asian Journal of Research in Microbiology · 2025

Tridax procumbens. Linn is a well-known medicinal plant found all over India. It contains flavonoids, alkyl esters, sterols, pentacyclic triterpenes, fatty acids and polysaccharides, and various chemical constituents naturally. The extracts obtained from Tridax leaves promote wou...

Open access Research Article 10.9734/sajrm/2025/v19i6439

Antioxidant and Antimicrobial Properties of TiO2-ZnO Bimetal Nanoparticle Synthesized Using Leucas aspera L. Flower Extract

S Seema, D Nivethini, R Ragunathan & Jesteena Johney · South Asian Journal of Research in Microbiology · 2025

Aims: This study focuses on the biosynthesis of titanium dioxide (TiO₂) and zinc oxide (ZnO) bimetal nanoparticles using Leucas aspera L. flower extract and their evaluation for antioxidant and antimicrobial properties. Study Design: This study follows an experimental laboratory-...

Open access Research Article 10.9734/sajrm/2025/v19i4429

Production and Characterisation of Surfactant Produced by Bacillus subtilis and Its Anti Microbial Study

Meenakshi. J, R. Renuka, R. Ragunathan & Jesteena Johney · Asian Journal of Research in Biochemistry · 2025

Aim: This study aims to isolate and characterize biosurfactants produced by bacteria, optimization, production conditions, and to evaluate physicochemical and antimicrobial properties for potential industrial and environmental applications. Study Design: A bacterial strain capabl...

Open access Research Article 10.9734/ajrb/2025/v15i2373

Isolation of Histamine Producing Bacteria (Escherichia coli) from Tiger Prawns (Penaeus monodon) and its Control Measures Using Plant Extracts

Christina Shalom, Chandra Prabha, R Ragunathan & Jesteena Johney · Asian Journal of Research in Biochemistry · 2025

Aims: The study aims to isolate, molecularly identify, and estimate histamine-producing bacteria from Penaeus monodon (tiger prawns) and evaluate their antibiotic resistance and histamine degradation potential using plant extracts. Study Design: Experimental study involving micro...

Open access Research Article 10.9734/ajrb/2025/v15i2374