The microbiological safety of raw cow milk from collection centers of three regions in the north-east of Morocco has been studied. It involved 80 samples and was extent over a period of three years. The samples were analysed for the enumeration of Total Plate Count (TPC), total coliforms (TC), fecal coliforms (FC), Staphylococcus aureus (S. aureus) as well as the prevalence of pathogens such as...

The stability of thermophilic proteins has been viewed from different perspectives and there is yet no unified principle to understand this stability. It would be valuable to reveal the most important interactions for designing thermostable proteins for such applications as industrial protein engineering. In this work, we have systematically analyzed the importance of various interactions by co...

Many studies have been undertaken to characterise alcohol dehydrogenases (ADHs) from thermophiles and hyperthermophiles, mainly to better understand their activities and thermostability. To date, there are 20 thermophilic archaeal and 17 thermophilic bacterial strains known to have ADHs or similar enzymes, including the hypothetical proteins. Some of these thermophiles are found to have multipl...

Influence of Water Treatment Processes Statistical analyses were conducted with historical data from the South Central Connecticut Regional Water Authority (SCCRWA) to determine if parameters determined in the treatment plants were related in any way to coliform counts in the distribution system. The analysis indicated that sufficient chlorination for maintaining treatment effluent standards fo...

several common approaches are used for disinfection of water in this section, but using the approaches (e.g. chlorination) are accompanied with hazardous by-products and also lead to notable changes in odor and flavor of water. gamma irradiation as an emerging method has been encouraged currently by fao/who for water, wastewater and food treatment. coliform bacteria belong to common contaminant...

OBJECTIVE The presence of coliform bacteria indicates a watershed risk for harboring microbes capable of causing human disease. We hypothesized that water from watersheds that have different human- or animal-use patterns would have differing risks for the presence of coliform bacteria. METHODS; Water was collected in wilderness areas of the Sierra Nevada range in California. A total of 60 sites...

Surface plating of coliforms on Trypticase soy agar, followed by 1 to 2 h of incubation at 25 C and subsequent overlay with violet red bile agar, was found to be a useful method for the repair and enumeration of coliforms injured by freezing.

The accuracy of Colilert-18 as a test for coliforms and Escherichia coli in subtropical freshwater was evaluated by using API 20E strips and fatty acid methyl ester analysis. The false-positive and -negative rates of detection were 7.4 and 3.5%, respectively, for E. coli and 9.6 and 6.3%, respectively, for coliforms.