Pathogenic micro-organisms in waste waters from daiies
Waste waters from dairies were tested for the presence of bacterial pathogens - Listeria monocytogenes, Staphylococcus aureus and Salmonella spp. The prevalence of bacteria was investigated in each stage of the cleaning process (activated sludges systems) too. Two hunder samples of raw waste water,...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2000-10-01
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| Series: | Czech Journal of Food Sciences |
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| Online Access: | https://cjfs.agriculturejournals.cz/artkey/cjf-200005-0002_pathogenic-micro-organisms-in-waste-waters-from-daiies.php |
| _version_ | 1797899873884831744 |
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| author | P. Navrátilová |
| author_facet | P. Navrátilová |
| author_sort | P. Navrátilová |
| collection | DOAJ |
| description | Waste waters from dairies were tested for the presence of bacterial pathogens - Listeria monocytogenes, Staphylococcus aureus and Salmonella spp. The prevalence of bacteria was investigated in each stage of the cleaning process (activated sludges systems) too. Two hunder samples of raw waste water, activated sludge, returned activated sludge, excess sludge and treated water from 14 dairies were tested. The samples were all negative for Salmonella spp. From a total of 102 (51%) strains Listeria spp., Listeria inoccua 95 (47.5%) and Listeria monocytogenes 7 (3.5%) were identified. 47 samples were positive for S. aureus. L. monocytogenes were detected in raw waste water 1 (1.6%), in activated sludge 3 (5.5%), in excess sludge 1 and in treated water 2 (3.1%). S. aureus were detected in raw waste water 14 (22.6%), in activated sludge 23 (41.8%), in excess sludge 1 and in treated water 8 (12.3%). These results demonstrate a prevalence of L. monocytogenes and S. aureus in waste waters from dairies. During the cleaning process pathogenic bacteria were not devitalized. The excess sludge and treated water including pathogenic micro-organisms represent a potential health hazard. |
| first_indexed | 2024-04-10T08:36:52Z |
| format | Article |
| id | doaj.art-4631756a996946bfa7d879d0c89e2454 |
| institution | Directory Open Access Journal |
| issn | 1212-1800 1805-9317 |
| language | English |
| last_indexed | 2024-04-10T08:36:52Z |
| publishDate | 2000-10-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Food Sciences |
| spelling | doaj.art-4631756a996946bfa7d879d0c89e24542023-02-23T03:26:25ZengCzech Academy of Agricultural SciencesCzech Journal of Food Sciences1212-18001805-93172000-10-0118517017410.17221/8338-CJFScjf-200005-0002Pathogenic micro-organisms in waste waters from daiiesP. NavrátilováWaste waters from dairies were tested for the presence of bacterial pathogens - Listeria monocytogenes, Staphylococcus aureus and Salmonella spp. The prevalence of bacteria was investigated in each stage of the cleaning process (activated sludges systems) too. Two hunder samples of raw waste water, activated sludge, returned activated sludge, excess sludge and treated water from 14 dairies were tested. The samples were all negative for Salmonella spp. From a total of 102 (51%) strains Listeria spp., Listeria inoccua 95 (47.5%) and Listeria monocytogenes 7 (3.5%) were identified. 47 samples were positive for S. aureus. L. monocytogenes were detected in raw waste water 1 (1.6%), in activated sludge 3 (5.5%), in excess sludge 1 and in treated water 2 (3.1%). S. aureus were detected in raw waste water 14 (22.6%), in activated sludge 23 (41.8%), in excess sludge 1 and in treated water 8 (12.3%). These results demonstrate a prevalence of L. monocytogenes and S. aureus in waste waters from dairies. During the cleaning process pathogenic bacteria were not devitalized. The excess sludge and treated water including pathogenic micro-organisms represent a potential health hazard.https://cjfs.agriculturejournals.cz/artkey/cjf-200005-0002_pathogenic-micro-organisms-in-waste-waters-from-daiies.phppathogenswaste watersludgedairy |
| spellingShingle | P. Navrátilová Pathogenic micro-organisms in waste waters from daiies Czech Journal of Food Sciences pathogens waste water sludge dairy |
| title | Pathogenic micro-organisms in waste waters from daiies |
| title_full | Pathogenic micro-organisms in waste waters from daiies |
| title_fullStr | Pathogenic micro-organisms in waste waters from daiies |
| title_full_unstemmed | Pathogenic micro-organisms in waste waters from daiies |
| title_short | Pathogenic micro-organisms in waste waters from daiies |
| title_sort | pathogenic micro organisms in waste waters from daiies |
| topic | pathogens waste water sludge dairy |
| url | https://cjfs.agriculturejournals.cz/artkey/cjf-200005-0002_pathogenic-micro-organisms-in-waste-waters-from-daiies.php |
| work_keys_str_mv | AT pnavratilova pathogenicmicroorganismsinwastewatersfromdaiies |