Laccase-modified silica nanoparticles efficiently catalyze the transformation of phenolic compounds

Galliker, Patrick; Hommes, Gregor; Schlößer, Dietmar; Corvini, Philippe F.-X.; Shahgaldian, Patrick

doi:10.1016/j.jcis.2010.05.031

Cited by 78 publications

(35 citation statements)

References 26 publications

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“…The ion fragments of the O-trimethylsilylated compound, which are depicted in Fig. 3, are almost identical to the fragmentation pattern obtained for 4-isopropenylphenol by Galliker et al (2010). The second peak detected might correspond to 4-(2-hydroxypropan-2-yl)phenol although the identification could not be confirmed (ESM, Fig S2b).…”

Section: Identification Of Transformation Productssupporting

confidence: 62%

“…4), the unidentified peak with m/z of 93 may correspond to phenol, which was reported to be produced from the (Galliker et al 2010;Huang and Weber 2005). Polymerization of BPA by laccase has been reported in previous studies, and the proposed pathway consisted of a polymerization mechanism of BPA through C-C or C-O bonds to form oligomers (Cabana et al 2007).…”

Section: Identification Of Transformation Productsmentioning

confidence: 88%

“…The application of enzymes in continuous processes such as wastewater treatment plants must ensure the retention of the biocatalyst in the system (Galliker et al 2010). Two different approaches, based on free or immobilized laccases, can be considered .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Arca-Ramos

Eibes

Feijoo

et al. 2015

Appl Microbiol Biotechnol

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In this study, the removal of bisphenol A (BPA) by laccase in a continuous enzymatic membrane reactor (EMR) was investigated. The effects of key parameters, namely, type of laccase, pH, and enzyme activity, were initially evaluated. Once optimal conditions were determined, the continuous removal of the pollutant in an EMR was assessed in synthetic and real biologically treated wastewaters. The reactor configuration consisted of a stirred tank reactor coupled to a ceramic membrane, which prevented the sorption of the pollutant and allowed the recovery and recycling of laccase. Nearly complete removal of BPA was attained under both operation regimes with removal yields above 94.5 %. In experiments with real wastewater, the removal of BPA remained high while the presence of colloids and certain ions and the formation of precipitates on the membrane potentially affected enzyme stability and made necessary the periodic addition of laccase. Polymerization and degradation were observed as probable mechanisms of BPA transformation by laccase.

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Section: Identification Of Transformation Productssupporting

confidence: 62%

Section: Identification Of Transformation Productsmentioning

confidence: 88%

See 1 more Smart Citation

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Arca-Ramos

Eibes

Feijoo

et al. 2015

Appl Microbiol Biotechnol

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“…There are many studies on the application of phenoloxidases immobilized on porous glass beads (Marin-Zamora et al 2007), chitosan beads (D'Annibale et al 1999;Ispas et al 2010;Tamura et al 2010;Zhang et al 2008), polymeric membranes (Georgieva et al 2008;Lante et al 2000;Moeder et al 2004;Rasera et al 2009) and cross-linked as aggregates (CLEAs) or on silica nanoparticles (Cabana et al 2009;Galliker et al 2010). We also employed the immobilized laccase for the bioremediation of waters polluted by phenol compounds, such as cathecol (Durante et al 2004), syringic acid (Attanasio et al 2005), BPA (Diano et al 2007) and phthalates (Mita et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of bisphenols with immobilized laccase or tyrosinase on polyacrylonitrile beads

et al. 2010

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The biodegradation of waters polluted by some bisphenols, endowed with endocrine activity, has been studied by means of laccase or tyrosinase immobilized on polyacrylonitrile (PAN) beads. Bisphenol A (BPA), Bisphenol B (BPB), Bisphenol F (BPF) and Tetrachlorobisphenol A (TCBPA) have been used. The laccase-PAN beads system has been characterized as a function of pH, temperature and substrate concentration. The biochemical parameters so obtained have been compared with those of the free enzyme to evidence the modification induced by the immobilization process. Once characterized, the laccase-PAN beads have been employed in a fluidized bed reactor to determine for each of the four bisphenols the degradation rate constant (k); the τ(50), i.e., the time to obtain the 50% of degradation, and the removal efficiency (RE(90)) after 90 min of enzyme treatment. The same parameters have been measured for each of the four pollutants with the same fluidized bed bioreactor loaded with tyrosinase-PAN beads. The internal comparison, i.e., in each of the two catalytic systems, has shown that both enzymes exhibit a removal efficiency in the following order BPF>BPA>BPB>TCBPA. The external comparison, i.e., the comparison between the two catalytic system, has shown that the catalytic power of laccase were higher than that of tyrosinase. The operational stability of both catalytic systems resulted excellent, since they maintained more than 80% of the initial activity after 30 days of work.

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“…In addition to the classes of compounds depicted in Fig. 1 [111]. Another fungal laccase (derived from Trametes versicolor) was used for degradation of 2,4-dinitrophenol [112].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Silica nanoparticle based techniques for extraction, detection, and degradation of pesticides

Bapat

Labade

Chaudhari

et al. 2016

Advances in Colloid and Interface Science

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Laccase-modified silica nanoparticles efficiently catalyze the transformation of phenolic compounds

Cited by 78 publications

References 26 publications

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Biodegradation of bisphenols with immobilized laccase or tyrosinase on polyacrylonitrile beads

Silica nanoparticle based techniques for extraction, detection, and degradation of pesticides

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