Objective: To determine the prevalence and antibiotic resistance of Escherichia coli (E.
coli), in seafood obtained from Cuddalore and Parangipettai fish landing centres. Also, to
identify the susceptibility of E. coli against predominant seaweeds red alga Kappaphycus
alvarezii (K. alvarezii) and brown alga Padina boergessenii (P. boergessenii) extracts as sulfated
polysaccharides and polyphenols respectively. Methods: A total of 48 samples (Two stations
fCisuhdedsa lcoarueg ahnt df rPomar asnegai paentdta ei,s tTuaamryi,l sNeaadfouo, dI npdrioac)e. sSsainmgp plilnagn tasr e(pa aacrkei nfigs ha nldan idcien gp acceknetrde fwishheerse) aanndti mloiccarol bfiiashl rmesairsktaentsc e(f iasnhd s saemnpslietisv)i.t yA fatgear inissotl actoimonm teortcailalyll y8 01 0s taranitnibs iwoteicres . aTnhaely azemdp ifcoirl liitns resistant E. coli CE21 was identified through molecular techniques as 16S rDNA sequencing.
Two seaweeds K. alvarezii and P. boergessenii were screened for antibacterial activity against
12 antibiotic resistant E. coli strains. Results: Totally 48 swabbed samples from two different
fish handling area were characterized for total bacterial and E. coli count. Mostly, the E. coli
sptarcakinasg iwnegr ep rioscoelastse.d I nfr otmha tf ismha xloicmaul mm a5r6k.2e5t %an sdt rsaeianfso owde rper orceessissitnagn tp tloa natms pbiecfoilrlein a nadn da fttheer minimum 2.5% strains were resistant to chloramphenicol. Therefore, the E. coli CE21 was
identified through molecular techniques E. coli (GenBank accession number GU065251), The
MIC value for polyphenol extract was slightly less than sulfated polysaccharides. E. coli strain
isolated from Parangipettai was considerably increased MIC value that Cuddalore. Conclusions:
aTlhl ea nptoimlyipchroebnioall arensdi sstaunlfta Ete.d c oploi lsytsraacincsh aarnidd eisn sphaorwticeudl aprr othmei siinnhgi biintohriyb irteosrpyo rnessep oofn saem apgicaiilnlisnt