Irpex lacteus

Irpex lacteus — Methyl Red and Congo Red Reactive Orange 16, Congo Red, [60]... 

Novotny C, Rawal B, Bhatt M, Patel M, Sasek V, Molitoris PH (2001) Capacity of Irpex lacteus and Pleurotus ostreatus for decolorization of chemically different dyes. J Biotechnol 89(2—3) 113—122... 

Kasinath A, Novotny C, Svobodova K, Patel KC, Sasek V (2003) Decolorization of synthetic dyes by Irpex lacteus in liquid cultures and packed-bed bioreactor. Enzyme Microb Technol 32 167-173... 

Tavcar M, Svobodova K, Kuplenk J, Novotny C, Pavko A (2006) Biodegradation of azo dye R016 in different reactors by immobilized Irpex lacteus. Acta Chim Slov 53 338-343... 

Svobodova K, Senholdt M, Novotny C, Rehorek A (2007) Mechanism of Reactive Orange 16 degradation with the white rot fungus Irpex lacteus. Process Biochem 42 1279-1284... 

Initial adsorption of the dyes on fungal biomass followed by degradation was observed in cultures of Irpex lacteus, Phanerochaete chrysosporium, Trametes versicolor, and Trichophyton rubrum [46 -9]. In P. sajor-caju, it was observed that Disperse Blue 79 and Acid Red 315 were incompletely or not degraded, but a decolorization was reached due to adsorption to the mycelium [38]. Also algae can be used as biosorbents of azo dyes [50]. 

Maximo C, Costa-Ferreira MC (2004) Decolourisation of reactive textile dyes by Irpex lacteus and lignin modifying enzymes. Process Biochem 39 1475-1479... 

Susla M, Svobodova K (2008) Effect of various synthetic dyes on the production of manganese-dependent peroxidase isoenzymes by immobilized Irpex lacteus. World J Microbiol Biotechnol 24 225-230... 

K. Novotny, K. Svoboda, A. Kasinath and P. Erbanova, Biodegradation of synthetic dyes by Irpex lacteus under various growth conditions, hit. Biodeter. Biodegr., 54 (2004) 215-223. 

In previous work, we obtained several cellulase components from culture filtrates of Irpex lacteus (Polyporus tulipiferae) or from Driselase, a commercial enzyme preparation of this fungus they behaved practically as a single protein (1,2,3). They were different in randomness of the hydrolysis of carboxymethyl cellulose (CMC), expressed as the ratio... 

Fig. 8.4. Fungal metabolism of pyrene (after CernigUa et al., 1986 Cerniglia Sutherland, 2005). A. niger, Aspergillus niger, C. elegans, Cunninghamella elegans, I. lacteus, Irpex lacteus P. chrysosporium, Phanerochaete chrysosporium P. ostreatus, Pleurotus ostreatus.

Novotny, C., Erbanova, P., Cajthaml, T. et al. (2000). Irpex lacteus, a white rot fungus applicable to water and soil bioremediation. Applied Microbiology and Biotechnology, 54, 850-3. 

D-Xylanases have been reported to be produced by several strains of bacteria from marine environments,140,141 such as sea water and marine-bottom sediments, and by green, brown, and red algae (seaweeds). The enzymes have also been isolated from terrestrial fungi, for example, Aspergillus batatae,142 Chaetomium globosum,142 and Irpex lacteus.143 These bacteria and fungi were found to produce both (1 -> 3)- and (1 - 4)-/3-D-xylanases, which were secreted extracellularly. 

Figure 8. Activity—PS curves of cellulase II for cellotriose, cellotetraose ana cellopentaose (13). Cellulase II C2 component obtained from a culture filtrate of Irpex lacteus by starch-zone electrophoresis. Conditions Plastic tray 2 X 5 X 45 cm., veronal buffer, pH 8.7, p 0.1, 24 hr., 5.6 V/cm., 2.0-3.0 mA./cm.2...

The furans (31, 32), isolated from the basidiomycete Irpex lacteus, were shown to be nematocidal (LD50 50 ppm) towards A. besseyi [100]. The pentyl furan (31) was also isolated from an ascomycete and shown to have comparable activity (LD50 75 ig/ml and 50 pg/ml) towards C. ele-gans and M. incognita [101]. 

The effects of pH, temperature, and buffer type on the stability of purified wtMnP from white-rot fungi have been previously investigated. Sutherland and Aust [5] found that WtMnP from the white-rot fungus P. chrysosporium was most stable at pH 5.5 and temperatures at or below 37 °C. They also found that the presence of Ca is essential to maintain MnP activity. However, Mielgo et al. [6, 7] found that P. chrysosporium MnP stability and activity was optimal at pH 4.5 and 30 °C. Recently, the optimal pH for wtMnP from the white rot fungus Irpex lacteus was found to be from 5.5-6.5. [8, 9]. Band et al. [10] observed that rMnP produced by Escherichia coli lost its activity immediately after treatment with buffers of pH<3.0 or pH>8.0. 

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