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Biodegradation of Phthalic Acid Esters by the White-Rot Fungus Peniophora lycii
— The ability of the white-rot fungus Peniophora lycii LE-BIN 2142 to degrade such phthalic acid esters (PAEs) as diethyl phthalate (DEP), dibutyl phthalate (DBP), di(2-ethylhexyl) phthalate (DEHP), diisobutyl phthalate (DiBP), and n -butylbenzyl phthalate (BBP) was studied. It was shown that DEHP w...
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Published in: | Microbiology (New York) 2023-06, Vol.92 (3), p.427-433 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | —
The ability of the white-rot fungus
Peniophora lycii
LE-BIN 2142 to degrade such phthalic acid esters (PAEs) as diethyl phthalate (DEP), dibutyl phthalate (DBP), di(2-ethylhexyl) phthalate (DEHP), diisobutyl phthalate (DiBP), and
n
-butylbenzyl phthalate (BBP) was studied. It was shown that DEHP was most efficiently biodegraded by the fungus (over 98% on day 6 of cultivation). The residual content of DBP and DiBP in the culture liquid of the fungus at the end of cultivation (10 days) was ~17–18%. BBP turned out to be the most difficult-to-degrade compound: its residual content on day 10 of
P. lycii
cultivation was ~40%. DEP was resistant to fungal biodegradation and exhibited a toxic effect at 1.5 g/L: the rate of radial growth of the fungus on agar decreased threefold compared to the control, and the amount of fungal biomass during liquid-phase submerged cultivation decreased by about 1.5 times. During the cultivation of
P. lycii
on media with PAEs, an increase in esterase activity by about 2 times and a significant decrease (by 2–4 times) in oxidase activity was shown compared to the control medium without phthalates. |
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ISSN: | 0026-2617 1608-3237 |
DOI: | 10.1134/S0026261723600222 |