detecting microbial contamination of milk using novel engineering techniques is very worthy. in current study, microbial contamination of uht milk packages was detected using ultrasonic sensors. milk packages artificially were inoculated to e. coli in four dilutions and three replications. monitoring of ultrasonic properties was performed by measuring amplitude and time delay factors. artificia...

land use change of forest ecosystems in northern iran changes the soil quality of paresar (gilan province) and gorgan (gorgan province) regions. in order to study changes in some biological soil quality indices due to land use change from forest to cultivated lands, composite soil samples from two depths (0-20 and 20-40 cm) were taken from paresar and gorgan regions and urease, alkaline and aci...

microbial activity and spoilage of chicken meat from the market in mashhad, iran, stored in air at 0, 4, 10 and 15°c was assessed. microbial spoilage population, total volatilebase nitrogen (tvb-n), ph and organoleptic changes were determined. based on the results of sensory analysis, shelf-life of chicken meat stored at 0, 4, 10 and 15°c was 72, 120, 220 and 320 h, respectively. tvb-n that ser...

Soil carbon dynamics of terrestrial ecosystems play a significant role in the global carbon cycle. Microbial-based decomposition models have seen much growth recently for quantifying this role, yet dormancy as a common strategy used by microorganisms has not usually been represented and tested in these models against field observations. Here we developed an explicit microbial-enzyme decompositi...

introduction: increasing microbial resistance to antibiotic medications are a common phenomenon in developing countries and development country. in this study, administration of correct, incorrect and inappropriate antibiotic in children under 7 years of age with gastroenteritis in the pediatric ward of imam reza (as) in the years 2012-2013 was performed bojnurd-iran. materials and methods: thi...

A newly developed rapid microbial ATP bioluminescence test (R-mATP) was shown to be an adequate means to assay the microbial load of poultry carcasses. This assay utilizes differential extraction and filtration to separate somatic from microbial ATP in a very rapid timeframe. The assay requires approximately 5 min to complete; approximately 3.5 min to sample and 90 s analytical time. Correlatio...

in this research, the chemical and microbiological characteristics of white brined cheeses produced with five differen starter cultures, namely: traditional kefir grain, commercial kefir, commercial yogurt, traditional yogurt and commercial cheese starter culture, were examined during 60- day ripening period. results of statistical analysis showed that the type of starter culture had a signific...