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Mycology 2017
September 25-26, 2017
conferenceseries
.com
September 25-26, 2017 Chicago, USA
2
nd
International Conference on
Mycology & Mushrooms
Volume 3, Issue 2 (Suppl)
Med Mycol Open Access
ISSN: 2471-8521
Biodegradation of plasticizers from polypropylene thermoplastic composites by halotolerant fungi
Francisco Javier Toledo Marante
1
, Mioso R
2
and
Bravo de Laguna I H
1
1
ULPGC, Spain
2
UFPE, Brazil
T
his study investigated the capacity of two halotolerant fungal strains, which were grown in liquid-surface fermentation, to
degrade plasticizers from polypropylene containers.
Paecilomyces variotii
and
Penicillium roqueforti
were grown for 12 days
under hypersaline liquid-surface fermentation, with polypropylene commercial storage boxes being used as the fermenters. The
biodegradation experiment was conducted in a modified KMV broth. Bis-(2-ethylhexyl)-phthalate (BEHP, 1), a common chemical
additive, was identified as the only plasticizer in the culture containers used. It was observed that
P. varioti
was able to transform
BEHP into diethyl- and dibutyl- phthalates, while
P. roqueforti
transformed BEHP into diethyl-, bis-(2-methylpropyl)-, dibutyl-,
bis-(4-methylpentyl)-, dihexyl-, and dioctyl- phthalates. In this last case, 2-ethylhexyl-adipate (2) also was identified as byproduct.
BEHP was not detected in either mycelium after the incubation period. The results suggest that
P. varioti
and
P. roqueforti
are highly
efficient in degrading the BEHP plasticizer and can be used for bioremediation of polypropylene wastes. Therefore, efficient biotic
degradation of polypropylene by halotolerant fungal strains could provide eco-friendly alternatives for degrading plastic additives, as
well as leading to advances in the research and development of bioremediation strategies.
franciscojavier.toledo@ulpgc.esMed Mycol Open Access, 3:2, 2017
DOI: 10.21767/2471-8521-C1-003