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| Ahmed,W.; Yusuf,R.; Hasan,I.; Ashraf,W.; Goonetilleke,A.; Toze,S.; Gardner,T.. |
| Forty-six bottled water samples representing 16 brands from Dhaka, Bangladesh were tested for the numbers of total coliforms, fecal indicator bacteria (i.e., thermotolerant Escherichia coli and Enterococcus spp.) and potential bacterial pathogens (i.e., Aeromonas hydrophil, Pseudomonas aeruginos, Salmonella spp., and Shigella spp.). Among the 16 brands tested, 14 (86%), ten (63%) and seven (44%) were positive for total coliforms, E. coil and Enterococcus spp., respectively. Additionally, a further nine (56%), eight (50%), six (37%), and four (25%) brands were PCR positive for A. hydrophila lip, P. aeruginosa ETA, Salmonella spp. invA, and Shigella spp. ipaH genes, respectively. The numbers of bacterial pathogens in bottled water samples ranged from 28 ± 12... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bottled water; Fecal indicator bacteria; Quantitative PCR; Bacterial pathogens; Public health risk. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100013 |
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| CRUZ,Mariana Rodrigues Gomes da; LEITE,Ylka Jannielly Barbalho de Souza; MARQUES,Julyanna de Lima; PAVELQUESI,Sabrina Lunara Santos; OLIVEIRA,Luana Ribeiro de Almeida; SILVA,Izabel Cristina Rodrigues da; ORSI,Daniela Castilho. |
| Abstract This study evaluated the microbiological quality of minimally processed vegetables commercialized in the city of Brasilia, DF, Brazil. A total of 32 samples of different vegetables were purchased from 10 supermarkets. In most samples (78.1%) the populations of psychrotrophic bacteria had a high count ranging from 106 to 108 CFU/g. Thermotolerant coliforms were found in all samples, with populations higher than 102 MPN/g in 15 samples (46.9%). After molecular analyses, E. coli was identified in 16 samples (50.0%) and Salmonella spp. in 4 samples (12.5%). S. aureus was found in 14 samples (43.8%), with counts higher than 103 CFU/g in 4 samples (12.5%). The results obtained in this study showed that 16 samples (50%) were unfit for consumption... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fresh vegetables; Microbiological analyses; Bacterial pathogens; Food contamination; Food safety. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600498 |
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| Arzola-Alavarez,C; Castillo-Castillo,Y; Anderson,RC; Hume,ME; Ruiz-Barrera,O; Min,BR; Arzola-Rubio,A; Beier,RC; Salinas-Chavira,J. |
| ABSTRACT To study the antimicrobial and uric acid-preserving activity of pine bark tannin on poultry litter composting, antibiotic-free wood chip-based poultry litter was distributed (11 g) to 50-mL conical centrifuge tubes and immediately amended with 1.3 mL0.4 M sodium phosphate buffer (control) or with 1.3 mL condensed tannins from pine bark (Pinus palustris; 9 % tannin wt/vol in water). All tubes (n = 3 tubes/treatment) were inoculated with a novobiocin and naladixic acid-resistant Salmo-nella typhimurium (STNN) to achieve 3.0 log10 CFU/g and incubated at 37oC for 3 days to simulate an initial compost period. Wildtype E. coli and the challenge STNN strain as well as concentrations of ammonia, uric acid and urea were measured on days 0 and 3. Pine bark... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry litter; Condensed tannins; Uric acid; Bacterial pathogens. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100305 |
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