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Screening of white rot fungi for the treatment of olive mill waste‐waters
Author(s) -
Sayadi Sami,
Ellouz Radhouane
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280570208
Subject(s) - phanerochaete , chrysosporium , lignin , white rot , chemistry , trametes versicolor , chemical oxygen demand , food science , pulp and paper industry , paper mill , lignin peroxidase , cellulose , biodegradation , depolymerization , wastewater , laccase , organic chemistry , environmental engineering , environmental science , enzyme , effluent , engineering
Several white rot fungi were evaluated for their ability to decolorize olive mill waste‐waters (OMW). Among these, Phanerochaete chrysosporium showed the highest potential for the biological depollution of OMW. Approximately 65% of the color and 73% of the chemical oxygen demand (COD) were removed by P. chrysosporium strain HD. Phlebia radiata, Dichomitus squalens, Polyporus frondosus and Coriolus versicolor could also decolorize the OMW but to a lesser extent. The different abilities of these white rot fungi to decolorize OMW correlated with their rates of depolymerization of high molecular weight aromatics and the degradation of the low molecular weight aromatic compounds. Fourteen strains of P. chrysosporium were compared on the basis of their lignin peroxidase (LiP) production, OMW decolorization and residual material dry weight. High lignin peroxidase producer strains, such as strains HD and BKM‐F‐1767, showed the highest rates of OMW decolorization, P. chrysosporium strains 79–36 and FP 104297 (low LiP producer strains) did not exhibit any decolorization activity.