Rigidoporus microporus is the main causal of white root disease (WRD) in rubber trees (Hevea brasiliensis). The present study investigates use rhamnolipid, a biosurfactant produced by Pseudomonas aeruginosa USM-AR2 against R. microporus. In vitro dose-responses towards rhamnolipid were determined on different isolates using poisoned food technique (PFT). Inhibition mycelial growth was found to ...

Abstract Purpose The potential toxic effects due to the application of sophorolipid and novel saponin biosurfactant extracted from leaves Eucalyptus camaldulensis for purpose bioremediating PAH-contaminated soils sediments were studied. Methods phytotoxic eucalyptus determined based on seed germination assays carried out using seeds Lactuca sativa L compared with commonly used rhamnolipid Tween...

Natural gas is projected to be the premium fuel of the 21st century because of availability, as well as economical and environmental considerations. Natural gas is coproduced with water from the subsurface forming gas hydrates. Hydrate formation may result in shutdown of onshore and offshore operations. Industry practice has been usage of alcohols--which have undesirable environmental impacts--...

Over half of the oil reservoirs in the United States are considered “empty” although they still contain approximately 50% of their potential yield (Exxon Corporation, 1983). Pseudomonas aeruginosa produces a rhamnolipid biosurfactant extracellularly that can drive this trapped oil from crevices into openings that can be easily pumped. This tertiary method of oil recovery is currently being used...

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