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2015 ; 226
(8
): 251
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Biotransformation of Endocrine-Disrupting Compounds in Groundwater: Bisphenol A,
Nonylphenol, Ethynylestradiol and Triclosan by a Laccase Cocktail from Pycnoporus
sanguineus CS43
#MMPMID26190872
Garcia-Morales R
; Rodríguez-Delgado M
; Gomez-Mariscal K
; Orona-Navar C
; Hernandez-Luna C
; Torres E
; Parra R
; Cárdenas-Chávez D
; Mahlknecht J
; Ornelas-Soto N
Water Air Soil Pollut
2015[]; 226
(8
): 251
PMID26190872
show ga
The biodegradation of organic compounds present in water at trace concentration
has become a critical environmental problem. In particular, enzymatic oxidation
by fungal laccases offers a promising alternative for efficient and sustainable
removal of organic pollutants in water. In this work, the biocatalytic ability of
laccases from the Pycnoporus sanguineus CS43 fungus was evaluated. A filtered
culture supernatant (laccase cocktail) evidenced an enhanced biotransformation
capability to remove common endocrine-disruptor compounds (EDCs), such as
bisphenol A, 4-nonylphenol, 17-?-ethynylestradiol and triclosan. A biodegradation
of around 89-100 % was achieved for all EDCs using synthetic samples
(10 mg L(-1)) and after the enzymatic treatment with 100 U L(-1) (50.3 U mg
(-1)). The biodegradation rates obtained were fitted to a first order reaction.
Furthermore, enzymatic biocatalytic activity was also evaluated in groundwater
samples coming from northwestern Mexico, reaching biotransformation percentages
between 55 and 93 % for all tested compounds. As far as we know this is the first
study on real groundwater samples in which the enzymatic degradation of target
EDCs by a laccase cocktail from any strain of Pycnoporus sanguineus was
evaluated. In comparison with purified laccases, the use of cocktail offers
operational advantages since additional purification steps can be avoided.