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Identifier 000034985
Title Συγκριτική αξιολόγηση βασιδιομυκήτων στη μείωση πολυφαινυλικού φορτίου και φυτοτοξικότητας υγρών αποβλήτων ελαιουργείων
Author Αντωνίου, Θεόδωρος
Thesis advisor Πανόπουλος, Νικόλαος
Abstract The fungi constitute the main group of microorganisms which have been used in the past for the reduction of the phenolic load of olive mill wastewater (OMWW), so that it can become an environmentally acceptable effluent for discharge into stream or soil receptors or for further physiochemical or biological treatments. Recently, "white rot fungi" have been used for the biotreatment of OMWW with some success. Their enzymic system is basically oxidative and includes non-specialized enzymes such as ligninase, Manganese-dependent peroxidase and laccase. These enzymes use the phenolic compounds in OMWW as substrates, and accomplish their depolymerization by attacking and disrupting the aromatic rings. Many edible mushrooms, such as Pleurotus, Lentinula species, which belong to the white rot group, were evaluated in the present study. The fungi of the genus Pleurotus, were particularly effective in enzymic biodegradation of the OMWW phenolics and reducing significantly its phytotoxicity, while in parallel discolorizing the waste. Our studies revealed wide variability among Pleurotus species and isolates from different origins and corroborated previous results indicating that particular strains of these organisms are capable of reducing phenolic load, toxicity and the dark coloration and, thus, can be used for the biotreatment of the olive wastewaters successfully. The ability of different isolates to detoxify OMWW varied considerably at the species and strain levels, indicating complexity of the enzymic mechanisms and the biological parameters involved. The exploitation of different strains or strain combinations should assist in the more effective management of olive mill wastewaters at practical level. However, further research is needed to address the problems related to the pre-treatment of OMWW, the growth and enzyme production in commercial vessels, and the advancement of white-rot fungal biotechnology.
Language Greek
Issue date 2001-11-29
Collection   School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
Notes Διατμηματικό, συνεργαζόμενα Τμήματα Χημείας του Πανεπιστημίου Κρήτης και Χημικών Μηχανικών του Πανεπιστημίου Πατρών
Permanent Link https://elocus.lib.uoc.gr//dlib/d/f/8/metadata-dlib-2001antoniou.tkl Bookmark and Share
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