UNLABELLED Bacteria produce a variety of biosurfactants capable of significantly reducing liquid (aqueous) surface tension (γ) with a range of biological roles and biotechnological uses. To determine the lowest achievable surface tension (γMin ), we tested a diverse collection of Pseudomonas-like isolates from contaminated soil and activated sludge and identified those expressing biosurfactants...

Heavy vacuum gas oil (HVGO) is a complex and viscous hydrocarbon stream that is produced as the bottom side product from the vacuum distillation units in petroleum refineries. HVGO is conventionally treated with thermochemical process, which is costly and environmentally polluting. Here, we investigate two petroleum biotechnology applications, namely valorization and bioupgrading, as green appr...

With the present climate change and increasing world population, there is an urgent need to discover creative, efficient, cost-effective natural products for benefit of humanity. Biosurfactants are produced by various microorganisms that have several distinct properties compared other synthetic surfactants, including mild production conditions, multifunctionality, higher biodegradability, lower...

Oil pollution is an environmental problem of increasing importance. Hydrocarbon-degrading microorganisms, adapted to grow and thrive in oil-containing environments, have an important role in the biological treatment of this pollution. One of the limiting factors in this process is the bioavailability of many fractions of the oil. The hydrocarbon-degrading microorganisms produce biosurfactants o...

Biosurfactants are produced by different microorganisms like bacteria, algae, fungi on to the cell surface. They amphipathic in nature which helps them aggregate at interfaces, thereby reducing surface tension. characterized molecular weight into two i.e. low and high molecular. According biomolecule such as protein, carbohydrate moiety attached, they have distinct structures provide functions ...

Many microorganisms are able to produce a wide range of amphipathic compounds, with both hydrophilic and hydrophobic moieties present within the same molecule which allow them to exhibit surface activities at interfaces and are generally called biosurfactants or bioemulsifiers. These surface-active compounds (SAC) are mainly classified according to their mode of action, molecular weight and gen...