Antibiotic study of listeria monocytogenes from different food sources of andhra pradesh

The isolated Listeria monocytogenes (n= 128) isolated from food were evaluated for antimicrobial rresistance. All 128 L. monocytogenes isolates were more resistant to different antimicrobial combinations. But most of the isolates were commonly showed resistance to penicillin, ampicillin and chloramphenicol. All these isolates were screened for presence of resistance gene (pen A, amp C and cml A) and out of 128, 54 isolates showed the amplification of pen A (500 bp) gene, 21 isolates showed amp C (550 bp) and 13 showed cml A (698 bp). As India adopting the international food habits the incidence of Listeria sps has been increasing. Because of no proper diagnosis, now a day’s antibiotic resistance increased.