INVESTIGATIONS UPON POST-VANILLIN LIGNIN DECAY BY FUNGI

Nine species of fungi were tested with respect to their growth in liqu id mineral medium with an addition of soluble fraction of post-vanilli n lignin (lignin V). The changes of lignin V content as well as laccas e activity in medium were determined. The most intensive decay of lign in V was observed in the cultures of Trametes versicolor. In the cultu res of this fungus, a better growth of mycelium was observed, higher l evel of laccase, peroxidase glucose oxidase and superoxide dismutase a s compared with control glucose cultures. Also, the amount of free phe nolic substances increased periodically. Since the fungi were impossib le to grow on lignin V, in the absence of glucose, the conducted exper iments indicate some inductive properties of lignin V rather than a po ssibility of application of this material for mycelium production on l arge scale.