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R. Ragunathan

Publications (8)

Synthesis of Copper Oxide Nanoparticles Using Garlic Peel Extract: Phytochemical Profiling, Evaluation of Antioxidant, Antimicrobial, and Anticancer Activities

Vootukuri Jeevana Jyothi, Kancharla Swapna & R. Ragunathan · Journal of Advances in Biology & Biotechnology · 2026

Garlic peel, an agricultural waste material, is a rich source of bioactive compounds and can serve as an eco-friendly resource for nanoparticle synthesis. The present study aimed to synthesise copper oxide nanoparticles using garlic peel extract and evaluate their phytochemical,...

Open access Research Article 10.9734/jabb/2026/v29i94350

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

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

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

Anti-microbial and Wound Healing Properties of Leaf Extracts of Spermacoce verticillata L

R. A. M. Jainaf Nachiya, G. Sangeetha, R. Ragunathan, SD Shahanawaz & Sumanta Bhattacharya · Journal of Pharmaceutical Research International · 2021

The Rubiaceae family is one of the most important medicinal families that are found in the tropical region of the world. There are many species under the Rubiaceae family such as Coffea arabica, Cinchona officinalis, Spermacoce verticillate. There are several plant parts used to...

Open access Research Article 10.9734/jpri/2021/v33i59A34263

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

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