Removal of resin acids from culture media and kraft-mill effluents by yeasts and some other fungi

Abstract

Epicoccum nigrum, Rhinocladiella mansonii, Rhodotorula minuta, and Trichosporon cutaneum were tested for their ability to remove resin acids from supplemented kraft-mill effluent and from a medium containing yeast extract as sole nitrogen source. Up to 39% of the resin acid content was removed by all four organisms. The mutagenic activity of the resin acid preparation, as measured by the induction of gene conversion in a strain of Saccharomyces cerevisiae, was low or non-existent.