Perfluorooctanesulfonate (PFOS) is a compound that has wide applications with extreme persistence in the environment and the potential to bioaccumulate, and could induce adverse effects to ecosystems. We investigated the degradation of PFOS by laccase-induced enzyme catalyzed oxidative humification …

Laccase-Mediator Pretreatment of Wheat Straw Degrades Lignin and Improves Saccharification . By Jorge Rencoret, Antonio Pereira González, The purposes of this work are to study the ability of a laccase-mediator system to remove lignin improving saccharification,

Qi Luo, Xiufen Yan, Junhe Lu, Qingguo Huang. Perfluorooctanesulfonate Degrades in a Laccase-Mediator System. For example, it has been found that laccase was able to degrade its unfavorable substrate, e.g., herbicide isoproturon, perfluorooctanesulfonate, and perfluorooctanoic acid using 1-hydroxybenzotriazole (HBT) and soybean meal as mediators (Luo et al., 2018a, 2018b; Zeng et al., 2017), respectively. Qi Luo's 15 research works with 239 citations and 1,481 reads, including: Perfluorooctanesulfonate Degrades in a Laccase-Mediator System Laccase-mediator reaction system is able to degrade perfluorooctanoic acid in soil. • Soybean meal can serve as a cost-effective natural mediator of laccase. • PFOA degradation products in soil are partially fluorinated organic compounds.

Download citation. Published: 12 May 2016. Issue Date: September 2016. DOI: https://doi.org/10.1007/s12155-016-9745-z 2019-11-15 · For example, it has been found that laccase was able to degrade its unfavorable substrate, e.g., herbicide isoproturon, perfluorooctanesulfonate, and perfluorooctanoic acid using 1-hydroxybenzotriazole (HBT) and soybean meal as mediators (Luo et al., 2018a, 2018b; Zeng et al., 2017), respectively. The treatments with laccase alone (without mediator) decreased the lignin content about 12% and 20% when using laccase doses of 10 U · g -1 and 50 U · g -1, respectively.

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Perfluorooctanesulfonate Degrades in a Laccase-Mediator System Qi Luo, Xiufen Yan, Junhe Lu and Qingguo Huang Effect of perfluorooctanesulfonate (PFOS) Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is an anthropogenic fluorosurfactant and global pollutant. PFOS was the key ingredient in Scotchgard, a fabric protector made by 3M, and numerous stain repellents. It was added to Annex B of the Stockholm Convention on Persistent Organic Pollutants in May 2009.

The treatments with laccase alone (without mediator) decreased the lignin content about 12% and 20% when using laccase doses of 10 U · g -1 and 50 U · g -1, respectively. Table 1. Lignin content and monosaccharides release (% of sample weight) by cellulase hydrolysis of eucalypt samples. Eucalypt samples.

Sorption of Perfluorooctanoic Acid, Perfluorooctane Sulfonate and Perfluoroheptanoic Acid on Granular Activated Carbon. Abstract. We investigated whether the laccase-mediator system (LMS) with 1-hydroxybenzotriazole (HBT) as a mediator could degrade high-molecular-weight polyethylene and nylon-66 membranes. The LMS markedly reduced the elongation and tensile strength of these membranes. After 3 days of treatment with the LMS, the M w of polyethylene decreased from 242,000 to 28,300, and that of nylon-66 from 79,300 to 14,700.

Perfluorooctanesulfonate degrades in a laccase-mediator system

Use of pesticides is usually related to overproduction of crops in order to overcome worldwide demand of food and alimentary safety. Nevertheless, pesticides are environmental persistent molecules, such as the organochlorine pesticides, which are often found in undesired places.
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Environmental Science & Technology 2018, 52 (18) , 10617-10626. DOI: 10.1021/acs.est.8b00839. Jinyuan Hu, Kun Lu, Shipeng Dong, Qingguo Huang, Liang Mao. Inactivation of Laccase by the Attack of As (III) Reaction in Water.

Environmental Science & Technology, 52(18):10617-10626. Zhang, D., Q. Luo, B. Gao, S.Y. Chiang, D. Woodward, and Q. Huang. 2016.
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Enzymatic plastic conversion has emerged recently as a potential adjunct and alternative to conventional plastic waste management technology. Publicity over progress in the enzymatic degradation of polyesters largely neglects that the majority of commercial plastics, including polyethylene, polypropylene, polystyrene and polyvinyl chloride, are still not biodegradable.

Wine stabilization 6. Provides stability as well as shelf life to beer 2 Paper Industry 1. Pulp bleaching 2. The following PFOS and PFOA chemicals, with some exceptions, were used as pesticides or as EPA "Inerts" in pesticide products, until they were phased out of use since the story broke in 2000.

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Perfluorooctanesulfonate Degrades in a Laccase-Mediator System. Luo Q (1), Yan X (1) (2), Lu J (3), Huang Q (1). (1)Interdisciplinary Toxicology Program, Department of Crop and Soil Sciences , University of Georgia , Griffin , Georgia 30223 , United States.

Provides stability as well as shelf life to beer 2 Paper Industry 1. Pulp bleaching 2. The following PFOS and PFOA chemicals, with some exceptions, were used as pesticides or as EPA "Inerts" in pesticide products, until they were phased out of use since the story broke in 2000. Similarly, a reaction system composed of the fungal polyester hydrolase HiC and the lipase CalB from Candida antarctica also showed a 7.7‐fold increase in the yield of terephthalate obtained due to the concomitant degradation of MHET catalysed by CalB (Carniel et al., 2016). LMS laccase-mediator system Potential of C. rigida and its laccases in applied processes As mentioned before, C. rigida and its laccases are currently being studied in terms of their ability to degrade and/or detoxify a wide array of compounds such as industrial by-products and/or agricultural wastes.

Use of pesticides is usually related to overproduction of crops in order to overcome worldwide demand of food and alimentary safety. Nevertheless, pesticides are environmental persistent molecules, such as the organochlorine pesticides, which are often found in undesired places.

These laccase-mediator systems have been shown to de-grade not only lignin but also several aromatic and aliphatic xenobiotics (29, 39).

We investigated the degradation of PFOS by laccase-induced enzyme catalyzed oxidative humification reactions (ECOHRs) using 1-hydroxybenzotriazole (HBT) as a mediator.