Actinomycetes are an uncommon agent of human infections and its pathogenic factors are not known. The present study reports a rare case isolation of an actinomycete from a woman pleural fluid; the strain was identified by 16S rRNA gene sequence analysis. This strain was tested to produce an extracellular protease that hydrolysis gelatin, casein and hemoglobin on agar mediums. The purification o...

the present study was conducted to evaluate the effect of dietary inclusion of silver nanoparticle on general performance and digestive proteases in zebra fish. four experimental diets were designed with a concentration of 5, 20 and 40 parts per billion (ppb) nanoparticles in the diet (named s5, s20, and s40, respectively) and control group without any nanoparticles (s0). there was no significa...

Spent mushroom substrate (SMS) from Pleurotus ostreatus is residue of cultivation that known to have lignocellulolytic enzyme activity in it. Enzyme activities provides information on evidence fungi converting complex substrates simple ones as nutrients for them. In this study, the was found cellulase, lignin peroxidase, and protease. The samples used consisted three SMS were collected Padang P...

probable use of chemical and biochemical detergents to wash polysulphone membranes using in milk ultrafiltration needs a multidisciplinary investigation. by increasing use of these membranes in food processing, washing and recovery of initial permeate flux, in order to use for a longer time from this technology, has much importance. in this research, influence of chemical detergents including e...

Actinomycetes are an uncommon agent of human infections and its pathogenic factors are not known. The present study reports a rare case isolation of an actinomycete from a woman pleural fluid; the strain was identified by 16S rRNA gene sequence analysis. This strain was tested to produce an extracellular protease that hydrolysis gelatin, casein and hemoglobin on agar mediums. The purification o...

As an important industrial enzyme, protease is widely used in feed, food and other fields. At present, the insufficient activity obtained from microorganisms cannot meet purpose of production. In this study, Bacillus amyloliquefaciens with high production was screened animal feces by plate transparent circle method. To improve protease, atmospheric room temperature plasma (ARTP) mutagenesis fir...

Nowadays, textile processing based on biotechnology has gained its importance in the view of stringent environmental and industrial safety conditions. The use of protease enzymes in protein fibers to improve some physical and mechanical properties is particularly interesting. In this research, wool yarns were first treated with different concentrations of protease enzymes in aqueous solution in...

background and objectives: psychrotrophic bacteria can produce enzymes at low temperatures; this provides a wide biotechnological potential, and offers numerous economical advantages over the use of mesophilic bacteria. in this study, extracellular protease production by psychrotrophic rheinheimera sp. (km459533) was optimized by the response surface methodology. materials and methods: the cult...

background and aims: coxsackievirus b3 (cvb3) is the most common agent known to cause viral myocarditis. the viral genome encodes a single polyprotein that is cleaved to produce several proteins by virally encoded proteases. most of this proteolytic processing is catalyzed by a cysteine protease called 3c. the 3c protease plays major role in viral replication and cellular damage. methods: to un...

Three hundred one-day-old male broiler chickens (Ross-308) were fed corn-soybean basal diets containing non-starch polysaccharide (NSP) enzyme and different levels of acid protease from 1 to 42 days of age to investigate the effects of exogenous enzymes on growth performance, digestive function, activity of endogenous digestive enzymes in the pancreas and mRNA expression of pancreatic digestive...