The objective of this study was to determine whether the use electromagnetic field (EMF) 50 Hz frequency and magnetic induction 0.25 T could make for successful inactivation a phytoplankton species, namely, marine microalgae Tetraselmis suecica two bacteria strains ; Escherichia coli Enterococcus faecalis. A number laboratory tolerance experiments with selected organisms performed each microorg...

'I'he shelf life of fruit juices and concentrates is limited primarily by microbial, enzymatic, and chemical reactions that adversely affect their nutritional quality, color, and flavor. Pasteurization requirements of freshly extracted citrus juices are based on inactivation of thermally resistant endogenous enzymes whereas requirements for reconstituted juices are based on destruction of micro...

The emergence of multidrug-resistant bacteria is a phenomenon of concern to the clinician and the pharmaceutical industry, as it is the major cause of failure in the treatment of infectious diseases. The most common mechanism of resistance in pathogenic bacteria to antibiotics of the aminoglycoside, beta-lactam (penicillins and cephalosporins), and chloramphenicol types involves the enzymic ina...

The p38 mitogen-activated protein kinase pathway regulates innate immune responses in evolutionarily diverse species. We have previously shown that the Caenorhabditis elegans p38 mitogen-activated protein kinase, PMK-1, functions in an innate immune response pathway that mediates resistance to a variety of microbial pathogens. Here, we show that tir-1, a gene encoding a highly conserved Toll/IL...

Background and Aims: Fresh Frozen Plasma (FFP) is one of blood components. The risk of transmission of viruses from blood components regardless selection of blood donors and screening donated blood still remains. There are several methods for viral inactivation. In this study methylene blue (MB) photo inactivation process was used for inactivating viruses. Materials and Methods: In this study M...

In this study, a microbial fuel cell (MFC) with switchable power release is designed, which can be logically controlled by combinations of the most physiologically important parameters such as "temperature" and "pH." Changes in voltage output in response to temperature and pH changes were significant in which voltage output decreased sharply when temperature was lowered from 30°C to 10°C or pH ...

This study evaluates the cytotoxicity of four carbon-based nanomaterials (CBNs)--single-walled carbon nanotubes (SWNTs), multiwalled carbon nanotubes (MWNTs), aqueous phase C60 nanoparticles (aq-nC60), and colloidal graphite--in gram negative and gram positive bacteria. The potential impacts of CBNs on microorganisms in natural and engineered aquatic systems are also evaluated. SWNTs inactivate...

We review the recent literature concerning the efficiency of antimicrobial photodynamic inactivation toward various microbial species in planktonic and biofilm cultures. The review is mainly focused on biofilm-growing microrganisms because this form of growth poses a threat to chronically infected or immunocompromised patients and is difficult to eradicate from medical devices. We discuss the b...

The objective of this study was to investigate the inactivation kinetics Enterococcus faecium in peanut butter under different water activities (aw) and superheated steam temperatures. Peanut butters were prepared at 4 initial (0.19, 0.40, 0.60, 0.80) E. inoculated into (7.4–8.7 log CFU/g). samples exposed temperatures (125 °C, 175 225 250 °C). Survivor data modelled using Weibull log-linear mo...

This article discusses the value and limitations of using microbial indicators to predict occurrence of enteric pathogens in water. Raw or treated sewage is a primary source of fecal contamination of the receiving surface water or groundwater; hence, understanding the relationship between pathogens and indicators in sewage is an important step in understanding the correlation in receiving water...