Abstract

Raoultella electrica, a Gram-negative, non-spore-forming, rod-shaped facultative anaerobe, was identified during a regular investigation of bacterial contamination in table eggs in the winter season. A total of 165 hen's eggs were collected in the winter season from 15 different areas of the city of Jaipur, India. Gram-negative Enterobacteriales were isolated on selective and differential media by the conventional plate method and were further identified by several biochemical tests and 16S rRNA gene sequencing. Commonly prescribed antibiotics for enteric infection were used for antibiotic susceptibility testing. For isolated microorganisms, different resistance patterns were found against the different antibiotics used (p < 0.01). The multiple antibiotic resistance index of bacterial isolates ranged from 0.10 to 0.60. R. electrica strain 1GB/NBRC 109676/KCTC 32430 was isolated for the first time from commercial chicken's eggs.

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