Microbios 1984-01-01

Effects of sub-lethal concentrations of the antimicrobial agent propylene phenoxetol on the growth and extracellular enzymes of Propionibacterium acnes.

J Greenman

Index: Microbios 39(156) , 101-8, (1984)

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Abstract

Propionibacterium acnes was grown in continuous culture in the presence of propylene phenoxetol. At sub-lethal concentrations of this antimicrobial agent (0.025-0.1% w/v) steady-state growth conditions were achieved. In comparison with the control, cell biomass, maximum specific growth rates and levels of the extracellular lipase and hyaluronate-lyase, decreased with increasing concentrations of propylene phenoxetol. Levels of protease activity remained approximately constant whilst production of acid phosphatase was significantly increased with increasing propylene phenoxetol concentrations. At the highest concentration of the antimicrobial agent (0.2% w/v) growth was completely inhibited.

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