Morphological and biochemical characteristics and antibiotic resistance pattern of Staphylococcus aureus isolated from grapes

Aim: To determine the morphological and biochemical characteristics and antibiotic resistance pattern of Staphylococcus aureus isolated from grapes collected from different areas of Bangalore, Karnataka, India. Materials and Methods: Morphological studies of S. aureus by gram staining and further identification by various biochemical tests were performed. Resistance against various antibiotics, including methicillin, and its change under ultraviolet (UV) light was evaluated. Results and Conclusion: S. aureus was isolated and confirmed by the pour plate method and biochemical tests. Pure cultures of the organisms were prepared. The organisms were tested for resistance against ampicillin, tetracycline, kanamycin, and methicillin. The study offers evidence of the presence of S aureus in grapes and provides information on the antibiotic resistance of the organisms.