Isolation and characterization of a fungistatic principle produced by bacteria

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Abstract
A fungistatic principle produced by a bacterium Pseudomonas sp. was isolated, characterized, and its potential role in soil fungistasis considered. The principle was isolated from a concentrated cultural filtrate of the bacterium by the use of column chromatography, and characterized by its solubility and elemental analysis and by infrared, nuclear magnetic resonance, and mass spectra. The fungistatic principle was an unsaturated, aliphatic, hydroxyketone with a molecular weight of approximately 166. This compound could be recovered from soil only with organic solvents and, therefore, it was concluded that the principle probably does not contribute to soil fungistasis.

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