Microbiology Counting Articles & Analysis
10 articles found
Abstract Persistent microbiological fouling in open-recirculating cooling systems drives excess chlorine demand, equipment fouling, and operating cost. In a 100 000 gpd power-plant cooling tower in Oklahoma, elevated heterotrophic plate counts (>105 CFU/mL) persisted through summer despite continuous feeding of ~225 gal ...
Traditional time-consuming microbiological testing is, therefore, performed to confirm drinking water is not microbially contaminated. ...
This information greatly helps the UV manufacturer to size the system adequately, ensuring that over-design or frequent off-specification operation is avoided. 5) SERVICING A UV DISINFECTION SYSTEM When a UV reactor goes into alarm or poor microbiological counts are found, service is needed. The cause could be related to fouling of the quartz sleeve, UV lamp ...
Nevertheless from time to time high microbiological counts and biofilm formation were detected in the cooling system. ...
The MI agar, Colilert®, Chromocult coliform® agar, and DC with BCIG agar chromogenic culture-based methods used to assess microbiological quality of drinking water were compared in terms of their ubiquity, sensitivity, ease of use, growth of atypical colonies and affordability. ...
Nevertheless from time to time high microbiological counts and biofilm formation were detected in the cooling system. ...
The present work describes the development of a multi–sensor system for the evaluation of aseptic sterilisation processes employing hydrogen peroxide vapour by means of an electronic nose. Microbiological count reduction tests with Bacillus atrophaeus spores have been carried out in order to characterise influencing factors of the sterilisation by hydrogen ...
The objective was to study the effect of two controlled atmosphere (CA) compositions – 3% O2 and 6% CO2, and 3%O2 and 10% CO2 – on total counts of microorganisms at 30°C and 7°C, count of yeasts and moulds, count of enterobacteriaceae, and count of lactic acid bacteria of carrageenan coated fresh-cut 'Cavendish' banana. ...
A total of 80 sprout (40 mixed sprout and 40 alfalfa sprout) samples procured from two different supermarkets were tested for aerobic plate count (APC), coliform count (CC), staphylococcal count (SC) and for the presence of pathogens viz. ...
Microbiological analyses included aerobic plate count (APC), yeast and moulds, Streptococcus faecal, Staphylococcus aureus, Listeria monocytogenes and detection of Salmonella spp. All samples collected at the farms and the outlets had APC counts less than 107 CFU g−1. Local samples collected from the farms exceeded the ...