The Qiantang River is a typical freshwater ecosystem that acts as an irreplaceable water source in Zhejiang Province in southeastern China. However, the effects of environmental factors on the bacterial community of this freshwater ecosystem have not been determined. In this study, seven sediment samples were collected along the river. Their bacterial communities were identified using 454 high-...

A new high throughput antibacterial method employing the dye resazurin as an indicator of bacterial growth was developed to evaluate drug susceptibility by combined measurements of microtitre-plates, colorimetric and haemocytometric assays. The bacterial strains E. coli, B. subtilis, P. aeruginosa and S. aureus (multi-drug resistant strain) were used to evaluate the preliminary screening of pla...

The antibacterial activity of the methanol extract of Wedelia chinensis leave was studied and tested against three pathogenic Gram positive bacteria (Bacillus cereus, B. subtilis and Stapylococcus aureus) and three pathogenic Gram negative bacteria (Escherichia coli, Proteus rettgeri and Pseudomonas aeruginosa) by the disk diffusion assay and broth dilution methods. The extract exhibited favour...

In Romania, bronchial asthma represents a major public health problem. SCOPE: The study discusses the effects of bacterial plaque control upon the quality of respiration in a group of ashtmatic children previously subjected to professional dental scaling and brushing, comparatively with a similar group, whose habits of oral hygiene had not been influenced. In both groups, the indices of bacteri...

Marine sponges play important roles in benthic environments and are sensitive to environmental stresses. Polybrominated diphenyl ethers (PBDEs) have been widely used as flame retardants since the 1970s and are cytotoxic and genotoxic to organisms. In the present study, we studied the short-period effect of PBDE-47 (2,2',4,4'-tetrabromodiphenyl ether) treatment on the community structure and fun...

The aim of this study was to isolate, characterize, and evaluate the potential of petroleum hydrocarbon (PHC)-degrading bacterial strains from oil-contaminated soil in the Meerut region. Among 59 oil-degrading bacterial cultures isolated from the oil-contaminated soil samples, 1 Bacillus species, 2 species of Pseudomonas, and 1 species of Micrococcus, identified on the basis of biochemical and ...

The objective of the present study is to evaluate anti bacterial activity against Bacillus sp, Pseudomonas aeruginosa and Staphylococcus aureus anti tumour activity against Hep 2 cell line with crude metabolites isolated from endophytic fungi residing in leaves of Azadirhacta indica. Endophytic fungi isolated from sterile leaflets of Azadirhacta indica and the isolated respective fungi were gro...

The uncontrolled release of the industrial solvent methylene chloride, also known as dichloromethane (DCM), has resulted in widespread groundwater contamination in the United States. Here we investigate the role of groundwater bacterial communities in the natural attenuation of DCM at an undisclosed manufacturing site in New Jersey. This study investigates the bacterial community structure of g...

This paper describes an immunomagnetic separation of target bacterial cells from others by using magnetic bead. The surface of bead was coated with antibodies which can capture specific organism. The binding efficiency of immunomagnetic bead (IMB) capturing target bacterial cells was higher than 98% when the concentrations of target and interferent bacterial cells were at the same level. The co...

Recently we have developed new kinetic methods of bacterial cell estimation in food products by measurement of the increase in bacterial adenosine-triphosphate (ATP) content during incubation using a conventional firefly luminometer [Fujikawa and Morozumi: Jpn. J. Food Hyg. (2002)]. The methods were the end point method and the delay method. We, in this study, evaluated these methods for bacter...