[Biochemical and serological characterization Salmonella from retail meats in Guangdong Province]

Salmonella isolates from meat in Guangdong Province were characterized to determine their phenotype and serotype, to investigate contamination status of meats by Salmonella and provide scientific basis for detection and further control.

209 meat samples were detected according to methods GB 4789.4--2010 National food safety standard Food microbiological examination: Salmonella. The API 20E system was used to identify isolates. Serotyping of Salmonella isolates was performed by slide agglutination method using antisera to Salmonella.

According to the detection results of 209 meat samples, forty-six Salmonella strains were isolated from 42 meat samples, the positive rate was 20. 10%. The majority of positive samples were fresh meat, 69.23% in duck, 37.14% in chicken, 20.00% in beef and 16.67% in pock. The strains identified as Salmonella by the API 20E were distributed in 7 profile numbers with two of them being predominant (6704752 and 6704552). The most common serotypes were Derby (21.74%), Typhimurium (10.87%), Enteritidis (8.70%), Tshiongwe (8.70%), Indiana (8.70%), Weltevreden (8.70%).

Salmonella present in retail meats were common and phenotypically diverse in Guangdong Province.