PARTIAL CHARACTERIZATION OF SOIL HUMIC ACIDS THROUGH BIODEGRADATION

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Abstract
A strain of Penicillium frequentans was successfully employed for partial degradation and characterization of humic acids. Salicyl alcohol and salicylaldehyde were detected in culture filtrates of the fungus utilizing humates under reduced oxygen tension. The enzyme systems involved in the degradation of humic acids were adaptive. The humate-adapted mycelium was capable of metabolizing a number of compounds which occur in soil as products of degradation of lignin, aromatic amino acids, and plant glycosides but not polyphenolic hydrocarbons, resorcinol, and phloroglucinol.

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