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<p>Street food, especially shawarma, is a popular yet potentially hazardous item in regions like Tamil Nadu, India. This study examined the microbial contamination and antibiotic resistance in shawarma from local vendors. Twenty bacterial isolates were tentatively identified with biochemical and/or 16s r RNA sequencing, with <i>Escherichia coli</i> [isolate code (IC): SB3] and <i>Pseudomonas aeruginosa</i> (SB2) being the most prevalent. Samples, particularly chicken shawarma, showed maximum contamination. Biochemical tests confirmed multidrug-resistant (MDR) pathogens, notably 100% resistance in <i>P. aeruginosa</i> to antibiotics like ampicillin and chloramphenicol. These findings reveal serious food safety concerns, as poor hygiene during preparation promotes harmful microorganisms. The rise in MDR strains poses a major health risk, especially to vulnerable groups. This study emphasizes the need for better food safety standards, continuous monitoring, and education among food handlers to reduce street food-related health risks and prevent foodborne illnesses.</p>

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Assessment of Multidrug-Resistant Bacteria in Roadside Shawarma of Tamil Nadu: A Microbiological Analysis with Emphasis on Identification of Pseudomonas aeruginosa

  • 期刊论文

  • 发表日期：

    2026年4月26日

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  • Mimosa Ghorai,
  • Deepika Kumaresan,
  • Dharshan Priya Gururajan,
  • Pavithra Velu,
  • Manikandan Venkatachalam,
  • Arvind Prasanth Dorairaj

摘要

Street food, especially shawarma, is a popular yet potentially hazardous item in regions like Tamil Nadu, India. This study examined the microbial contamination and antibiotic resistance in shawarma from local vendors. Twenty bacterial isolates were tentatively identified with biochemical and/or 16s r RNA sequencing, with Escherichia coli [isolate code (IC): SB3] and Pseudomonas aeruginosa (SB2) being the most prevalent. Samples, particularly chicken shawarma, showed maximum contamination. Biochemical tests confirmed multidrug-resistant (MDR) pathogens, notably 100% resistance in P. aeruginosa to antibiotics like ampicillin and chloramphenicol. These findings reveal serious food safety concerns, as poor hygiene during preparation promotes harmful microorganisms. The rise in MDR strains poses a major health risk, especially to vulnerable groups. This study emphasizes the need for better food safety standards, continuous monitoring, and education among food handlers to reduce street food-related health risks and prevent foodborne illnesses.