Stabilization of oil-water emulsions by hydrophobic bacteria

Article Abstract:

The ability of certain intact bacterial cells to stabilize oil-in-water and water-in-oil emulsions without changing the interfacial tension, by inhibition of droplet coalescence as observed in emulsion stabilization by solid particles like silica is reported. Findings suggest that bacterial cells play a role in stabilizing emulsions in circumstances ranging from oil spills to fermentation.

Surface tension, Microbiological research

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Microbial life beneath a high Arctic glacier

Article Abstract:

Researchers discovered several different types of microbes underneath the John Evans Glacier on eastern Ellesmere Island, Nunavut, Canada. The organisms included aerobic chemoheterotrophs, anaerobic nitrate reducers, sulfate reducers, and methanogens. Similar conditions may exist under Martian polar ice caps, creating a viable habitat for life on Mars.

Canada, Microbial ecology, Glaciers

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Fermentative production of L-Alanyl-L-glutamine by a metabolically engineered Escherichia coli strain expressing L-amino acid alpha-ligase

Article Abstract:

The fermentative production of L-alanyl-L-glutamine (Ala-Gln) using an Escherichia coli strain expressing L-amino acid alpha-ligase (Lal) is presented.

Cell metabolism

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