Proceedings e report - Firenze University Press

WOOD SCIENCE FOR CONSERVATION OF CULTURAL HERITAGE
considerably less effective in degrading all the tested biocides. T. versicolor decomposed PCP totally,
while the other tested fungi degraded it to a much lower extent (Fig. 3).
(a)
(b)
(c)
Lindane peak integral
(~concentration of lindane)
PCB-153 peak integral
(~concentartion of PCB-153)
PCP peak integral
(~concentration of NaPCP)
150000
100000
50000
9000
8000
7000
6000
5000
4000
3000
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1000
0
250000
200000
150000
100000
50000
0
0
Control G. trabeum H. fragiforme C. purpureum T. versicolor P. ostreatus
133
Fungus
Control G. trabeum H. fragiforme C. purpureum T. versicolor P. ostreatus
Fungus
Control G. trabeum H. fragiforme C. purpureum P. ostreatus T. versicolor
Fungus
Fig. 3: Fungal degradation of lindane (a), PCB (b), and PCP (c); degradation rates were calculated from peak
integrals in chromatograms
In comparison to fungal degradation, an application of respective commercially available ligninolytic
enzymes laccase, manganese peroxidase, and versatile peroxidase were less efficient in degradation of
lindane or chlorinated phenols. Manganese peroxidase and versatile peroxidase were more applicable
enzymes in these cases (Fig 4).
Lindane peak integral
(~concentration of lindane)
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
Control Lac VP MnP
Ligninolytic enzymes
Fig. 4: Enzymatic degradation of lindane degradation rates was calculated from peak integrals in the
chromatograms
0
10
20
30
40
50
60
70
80
90
100
Degradation rate [%]
0
20
40
60
80
100
0
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100
0
20
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Degradation [%]
Degradation [%]
Degradation [%]