The study was carried out on live bivalve molluscs available on Polish market. Samples of the molluscs (n = 124) were collected from warehouses and markets. Six different species of molluscs (mussels, oysters, vongole, scallops, Japanese clams, and razor clams) were used for the determination of saxitoxine (responsible for paralytic shellfish poisoning, PSP) by ELISA. The maximum concentration of PSP toxins (756.69 μg/kg of meat) was found in scallops. The majority of tested mussels were free from the PSP toxins or contained biotoxins bellow the permitted level (800 μg/kg). The analysis of toxicological status of raw bivalve molluscs available on Polish market indicated that they are safe for consumers.
The aim of the study was the evaluation of the antimicrobial resistance of Enterococcus faecalis strains isolated from cattle, pig, and poultry meat. A test was performed on 111 strains using the minimum inhibitory concentration technique. The highest number of isolates (94 strains) were resistant to lincomycin, the second-highest resistance was to quinupristin/dalfopristin (88 strains), tetracycline followed (65 strains), and erythromycin resistance was also notable (40 strains). All isolates tested were sensitive to daptomycin, nitrofurantoine, and tigecycline, whereas only few strains were resistant to ciprofloxacin, gentamicin, penicillin, and vancomycin. The obtained results showed that meat may be a source of antimicrobial resistant enterococci which may be transferred to humans