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The Persulfate Oxidation of Fungal Melanins¹

ABSTRACT

Four fungal melanins were degraded by potassium persulfate, a new, mild chemical oxidation method. The percentage of degradation varied from 15 to 50% calculated by weight loss. Analysis of the degradation products by gas chromatography showed numerous fatty acids, both straight and branched chain, in widely varying amounts. The n-C₁₆ and n-C₁₈ acids were present in greatest abundance. By two-dimensional thin-layer chromatography, several phenols and anthraquinones were noted.

¹ Contribution from the Centro de Edafologia. C.S.I.C. Apartado 1052, Sevilla, Spain, and Dep. of Soil and Environmental Sciences, Univ. of California, Riverside.

² Soil Biochemists and Professor Emeritus, respectively.

Received for publication March 24, 1983. Accepted for publication June 30, 1983.