EXPLORING THE POTENTIAL OF BIOSURFACTANT-PRODUCING ENDOPHYTIC PSEUDOMONAS AERUGINOSA SF1R IN MEDICAL THERAPEUTICS

Main Article Content

Majid Ali Maitlo
Muneer Ahmed Qazi
Abdul Hussain Shar

Keywords

Biosurfactant, Antibacterial, antioxidant, Antibiofilm, Pseudomonas aeruginosa

Abstract

The emergence of antibiotic resistance and demand for eco-friendly therapeutic agents have intensified interest in microbial biosurfactants with biomedical applications. This study explores the potential of Pseudomonas aeruginosa SF1R, an endophytic strain isolated from Mangifera indica, as a biosurfactant producer with promising therapeutic relevance. SF1R isolate was screened and selected for biosurfactant production followed by medical applications including antibacterial, antibiofilm and antioxidant activity. SFIR strain produced crude biosurfactant product of approximately 1117 mg/L with functional activities like 60 mm oil displacement activity, 38% emulsification index and strong activity in terms of drop collapse test. Biosurfactant produced by SF1R isolate showed maximum antibacterial activity (41 ± 1.5 mm) against E.coli followed by S. typhae (35.5 ± 0.7 mm). The biosurfactant resulted in 57% inhibition of the biofilm produced by S. aureus, followed by 16% inhibition of the biofilm of E. coli.  Likewise, in biofilm eradication, 55% was observed in S. aureus followed by E.coli (28%). However, antioxidant activity in the form RSA of biosurfactant was observed as 60%.

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