Streptomyces sp. 6E3 antimicrobial activity isolated from mineral concentrate

• Main Authors: Angela Ampuero, Rosario Rojas, Candy Ruiz, Jasmin Hurtado
• Format: Article
• Language: Spanish
• Published: Instituto Nacional de Salud 2020-03-01
• Series: Revista Peruana de Medicina Experimental y Salud Pública
• Subjects: streptomyces; minerales; agentes antiinfecciosos; extractos celulares; bacteria; staphylococcus aureus; productos biológicos; pruebas de sensibilidad microbiana
• Online Access: https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/4505
• ISSN: 1726-4634; 1726-4642

The objectives of this study were to determine the antimicrobial activity of a culture of Streptomyces sp. 6E3 isolated from minerals against different pathogenic strains, to produce an extract and to estimate the minimum inhibitory concentration (MIC) of the fractions against methicillin-resistant Staphylococcus aureus (MRSA). Streptomyces sp. 6E3 showed antimicrobial activity primarily against Staphylococcus aureus (S. aureus). Five of the six fractions presented antimicrobial activity and the most effective gave a MIC of 0.88 ug / mL against S. aureus ATCC 33862, 0.44 ug / mL against S. aureus ATCC 43300 and 1.76 ug / mL vs. a S. aureus MRSA strain. Streptomyces sp. 6E3 has an antimicrobial potential against S. aureus strains resistant to methicillin and non-resistant, being of interest carrying out of more studies on its active metabolites.