Role of Indigenous Bacteria in Corrosion of Two Types of Carbon Steel.

This study aimed to investigate the presence of both aerobic and anaerobic bacteria in a water sample collected from a nuclear power plant and establish if the indigenous bacteria or the products of their metabolic activities could initiate the corrosion of two different types of carbon steel (i.e., A570, 1045).

Characterization of new diesel-degrading bacteria isolated from freshwater sediments.

As the result of diesel's extensive production and use as fuel for transportation, pollution with such complex mixtures of hydrocarbons is a major concern worldwide. The present study's focus was to investigate the presence of diesel-degrading bacteria in different Danube Delta freshwater sediments. Ten bacterial strains capable to grow in a minimal medium with diesel as the sole carbon source were isolated and characterized in this study.

Biosurfactant production by a strain.

The aim of the present study was to investigate the ability of IBB (GenBank KX499518) cells to produce biosurfactant when the growth was done in the presence of long-chain -alkane -hexadecane on medium supplemented with yeast extract, proteose peptone, starch, or cellulose. IBB revealed a higher growth in the presence of -hexadecane when the medium was supplemented with yeast extract, proteose peptone, or starch, compared with cellulose. Biosurfactant production was higher when IBB was grown in the presence of -hexadecane on yeast extract, proteose peptone, or starch supplemented medium, compared with biosurfactant produced on cellulose supplemented medium.

Response Mechanisms in Serratia marcescens IBB During Organic Solvents Exposure.

Serratia marcescens strain IBB (KT315653) which possesses serratiopeptidase (ser) gene (KT894207) exhibited good solvent tolerance. During the exposure of S. marcescens IBB cells to 5 % organic solvents, n-decane was less toxic for this bacterium, compared with n-hexane, cyclohexane, ethylbenzene, toluene, and styrene.

Response of Rhodococcus erythropolis strain IBBPo1 to toxic organic solvents.

Recently, there has been a lot of interest in the utilization of rhodococci in the bioremediation of petroleum contaminated environments. This study investigates the response of Rhodococcus erythropolis IBBPo1 cells to 1% organic solvents (alkanes, aromatics). A combination of microbiology, biochemical, and molecular approaches were used to examine cell adaptation mechanisms likely to be pursued by this strain after 1% organic solvent exposure.

Physiological cellular responses and adaptations of Rhodococcus erythropolis IBBPo1 to toxic organic solvents.

A new Gram-positive bacterium, Rhodococcus erythropolis IBBPo1 (KF059972.1) was isolated from a crude oil-contaminated soil sample by enrichment culture method. R.

Characterization of some bacteriocins produced by lactic acid bacteria isolated from fermented foods.

Lactic acid bacteria (LAB) isolated from different sources (dairy products, fruits, fresh and fermented vegetables, fermented cereals) were screened for antimicrobial activity against other bacteria, including potential pathogens and food spoiling bacteria. Six strains have been shown to produce bacteriocins: Lactococcus lactis 19.3, Lactobacillus plantarum 26.

Multidrug resistance in hydrocarbon-tolerant Gram-positive and Gram-negative bacteria.

New Gram-positive and Gram-negative bacteria were isolated from Poeni oily sludge, using enrichment procedures. The six Gram-positive strains belong to Bacillus, Lysinibacillus and Rhodococcus genera. The eight Gram-negative strains belong to Shewanella, Aeromonas, Pseudomonas and Klebsiella genera.