BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Fungal bioremediation
DTSTART:20101018T161500
DTSTAMP:20260408T034811Z
UID:f03fbef383ab59ebf021434f75e5051fd5fb710e9d58ba68f7c1943f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Pavko\, Aleksander (University of Ljubjana\, SI)\nIn the last 
 three decades\, research interest in fungal bioremediation has significant
 ly increased.\nThe research in decolorization and degradation of synthetic
  dyes at the Faculty of Chemistry and Chemical Technology at the Universit
 y of Ljubljana is focused on enzyme production with several fungi. Activit
 y measurement of various oxidative enzymes shows that initially lignin per
 oxidases (Lac) and subsequently manganese dependent peroxidases (MnP) are 
 responsible for the decolorization.\nThe production of extracellular ligni
 nolytic enzymes during dye decolorization was measured and the involvement
  of mycelium-associated activities in the decolorization process assessed.
  A repeated batch performance test demonstrated the potential of immobiliz
 ed fungal cultures to decolorize synthetic dyes over long time. The differ
 ent reactor systems were compared: trickle-bed\, rotating-disc and stirred
 -bed reactor. The highest dye decolorization efficiency (90% in 3 days) wa
 s observed in the small trickle bed reactor by the fungus Irpex lacteus.\n
 The influence of various support materials like oak wood\, pine wood\, bee
 ch wood and inert material like polyurethane foam (PUF)\, as well as liqui
 d media composition on the production of Lac and MnP activities was invest
 igated.\nThe capability of the produced enzymes to decolorize different or
 ganic dyes was tested. It was found that good wooden supports and inducers
  are beech wood and pine wood\, while the additional nitrogen and carbon s
 ource also influence the enzyme synthesis. On the basis of these results\,
  three types of culture media and support materials were prepared to achie
 ve the excess of Lac and MnP activities. Procedure for the enzyme producti
 on in stationary cultures was optimized for different fungi regarding the 
 type of sugar as a carbon source\, beech wood and pine wood as inductor an
 d immobilization support material. Structurally different dyes were used t
 o test the prepared enzyme mixtures.
LOCATION:GR A3 31
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR