this study was carried out to examine aflatoxin b1 (afb1) removal ability of four strains of lactic acidbacteria (lab). three indigenous (lactobacillus rhamnosus tmu094, lactobacillus fermentum tmu121and pedioccus pentosaceus tmu457) and a non-indigenous (labacillus rhamnosus ptcc1637) isolateswere studied. the strains were incubated with (afb1) at different time. the toxin residual in the supe...

morphological, biochemical and molecular characteristics were studied to identify dominant lactic acid bacteria (lab), isolated from traditional yoghurts produced by tribes of iran. from 60 yoghurt samples, a total of 137 lab isolates were determined, in which 66 and 71 were identified as lactic acid cocci and bacilli, respectively. biochemical tests showed the occurrence of 9.76% mesophilic ho...

the lactic acid bacteria (lab) are an industrially important group of probiotic organisms that play an important role in human health by inhibiting harmful and pathogen bacteria growth, boosting immune function, and increasing resistance to infection.  this study aimed to isolate, identify, and biologically characterize probiotic lab strains from iranian traditional dairy products. a total of 2...

acrylamide as a possible carcinogenic compound is known to produce in heated carbohydrate-rich food such as bread. in this study, the effect of the fermentation process by four lactic acid bacteria (lab) and yeaston an industrial scale, was studied on acrylamide reduction in bread. results showed that the flour specifications and the kind of microorganisms in the fermentation process are import...

background: integrons are the major reasons of multidrug resistance (mdr) among enteropathogenic bacteria. occurrence of horizontal gene transfer between integron-carrying microorganisms and other enteric bacteria may increase the rate of emergence of integron-associated antibiotic resistance. objectives: the objective of this study was to investigate class 1 integrons among members of enteropa...

waterborne outbreaks of pathogenic bacteria from contaminated water are serious threats forpublic health. coliform bacteria have been regarded as one of the most important indicators for monitoringpathogenic bacteria. to address potential pathogenic bacterial outbreaks, the distribution and diversity ofcoliform bacteria in jiahe river, which flows through densely-populated urban area in china, ...

abstract       background and objective: probiotics are living microorganisms that have beneficial effects on the health of digestive system. the aim of this study was to evaluate the antimicrobial ability of acidic and neutral supernatants (culture supernatant) of lactic acid bacteria against common bacterial pathogens.        methods: four species of lactic acid bacteria (lactobacillus planta...

Erythrocyte is human blood main bactericidal cell. During movement in blood stream erythrocytes are triboelectrically charged by rubbing to each other and vessel walls and this charge automatically attracts and keeps bacteria on erythrocyte surface. Bacteria fixation on erythrocyte membrane activates the receptors of the membrane and stimulates trans membrane releasing of oxygen from oxyhemoglo...

In this research work, the zinc extraction was investigated, using bioleaching process from a low grade zinc concentrate which was produced from the accumulated flotation tailings. Zinc content was initially upgraded to 11.97% by flotation process. Bioleaching experiments were designed and carried out by a mixed culture of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, Leptospir...

background and objective: during cheese ripening, some of water insoluble casein change to water soluble nitrogen which are include intermediate hydrohysate protein and free amino acids. materials and methods: these enzymes save their activities in pasteurization temperature and also uht processing. in this study effect of number of pscyrotroph bacteria on physical and chemical properties on uf...