Postnuclei supernatant of soybean (Glycine max cv. Chippewa 64) nodule homogenate was fractionated by stepwise sucrose density gradient centrifugation into supernatant, endoplasmic reticulum and mitochondria, and three distinct bands with 1.22, 1.25, and 1.27 g/cm(3) of peak density. Based on their enzymic activities, composition of electron transport components, and ultrastructural characteris...

it is now generally recognized that anaerobic bacteria may be involved in most human bacterial infections that follow any form of surgery or are related to those body sites that have a large anaerobic population. anaerobes must therefore be sought in a wide variety of clinical specimens. in this study, 3015 specimens of patients (1684 male and 1331 female) with periodontitis (160 cases), abcess...

phenol and phenol compounds are environmental pollutants present in industrial wastewaters such as, coal tar, oil refineries and petrochemical plants exist. phenol removal from industrial effluent is extremely important in protection of environment. recently phenol biodegradation has been considered. marine bacteria are the most important phenol biodegrader. in this study, the phenol-degrading ...

background: atrazine is a widely used herbicide. the increasing salinity of many water resources has had a negative effect on atrazine biodegradation. the aim of this study was to isolate atrazine degrading bacteria in semi-salinity media.   methods: nine selected bacterial species were cultivated on the mineral salt broth culture medium containing atrazine (50, 100, 500 mg/l), nacl concentrati...

background and objectives: paper and paperboard packaging play an important role in safety and quality of food products. common bacteria of paper and paperboard food packaging could grow due to specific conditions included humidity, tem- perature and major nutrition to contaminate the food. the purpose of this research was to investigate numbers and the types of bacteria in the food packaging p...

Background: Polycyclic aromatic hydrocarbons are a large group of oil contaminants with carcinogenic, mutagenic and teratogenic effects. The release of these compounds in soil destroys animals, plants and microbial diversity and has several negative impacts on physical properties of the soil including the destruction of soil aggregates reduction in pores, and increase in soil bulk density....

background: organic agricultural pesticides are so stable in ecosystems and biosphere. these compounds affect soil conditions and agricultural products. the aim of this study was isolation of diazinon-degrading bacteria from kerman pistachio orchards, southeastern iran. methods: diazinon-degrading bacteria were enriched in bushnell-hass medium. identification and sequencing of prevalent degradi...

ewe abortion and neonatal mortality are serious problems to sheep farmer. the objective of this paper was to report isolation of erysipelothrix rhusiopathiae from aborted fetuses in a flock in tehran, iran. abortion occurred in 10% of ewes in the flock. the fetuses were well developed and pinpoint, necrotic-like lesions were recorded on the placental cotyledons, whilst the inter -cotyledonary a...

The early symptoms of tularemia and plague, which are caused by Francisella tularensis and Yersinia pestis infection, respectively, are common to other illnesses, resulting in a low index of suspicion among clinicians. Moreover, because these diseases can be treated only with antibiotics, rapid isolation of the bacteria and antibiotic susceptibility testing (AST) are preferable. Blood cultures ...

background and objectives: anaerobic bacteria are recognized as important pathogens in surgical infections. however, they are the most overlooked microorganisms by the clinic and the laboratory because of the tedious culture techniques with longer turn-around times. the study was aimed to analyze the frequency of anaerobic bacterial surgical infections and their predisposing factors. materials ...