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Appl Environ Microbiol. 1968 April; 16(4): 569-571
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Growth and Survival of Fuel Isolates in Hydrocarbon-Fuel Emulsions

Department of Biology, University of Dayton, Dayton, Ohio 45409

ABSTRACT

Two fuel utilizers, a strain of Pseudomonas aeruginosa and a Hormodendrum sp., and two fuel isolates which did not use fuel, Staphylococcus and Bacillus spp., were tested for ability to survive and grow in systems containing emulsified or nonemulsified forms of JP-4 jet fuel. Neither emulsion (Alamac no. 1 or Alamac no. 2) supported microbial growth without a water phase. Growth of P. aeruginosa in liquid systems containing either emulsion was not significantly different from growth in liquid systems with nonemulsified fuel. The Hormodendrum sp. grew well in a liquid medium containing nonemulsified JP-4, but when either of the emulsions served as carbon source no growth was observed. However, good growth was noted on spread plates with either emulsion. Viable cells of Bacillus sp. did not increase over a 4-day period, and Staphylococcus sp. did not survive in liquid systems containing JP-4 or emulsions.