Biosurfactant production by two isolates ofPseudomonas aeruginosa

Biosurfactant production by two isolates ofPseudomonas aeruginosa

Two strains of biosurfactant-producing bacteria, identified asPseudomonas aeruginosa, were isolated from injection water and crude oil-associated water in Venezuelan oil fields. Both biosurfactants resembled rhamnolipids and produced stable emulsions of heavy and extra-heavy crude oils, reducing the...

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Veröffentlicht in:World journal of microbiology & biotechnology 1992-03, Vol.8 (2), p.125-128
Hauptverfasser: Rocha, C, San-Blas, F, San-Blas, G, Vierma, L
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container_title World journal of microbiology & biotechnology
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creator Rocha, C
San-Blas, F
San-Blas, G
Vierma, L
description Two strains of biosurfactant-producing bacteria, identified asPseudomonas aeruginosa, were isolated from injection water and crude oil-associated water in Venezuelan oil fields. Both biosurfactants resembled rhamnolipids and produced stable emulsions of heavy and extra-heavy crude oils, reducing the surface tension of water from 72 to 28 dynes/cm. Tenso-active properties of the biosurfactants were not affected by pH, temperature, salinity or Ca(2+) or Mg(2+) at concentrations in excess of those found in many oil reservoirs in Venezuela.
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title Biosurfactant production by two isolates ofPseudomonas aeruginosa
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