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The degradation of polylactic acid face mask components in different environments

Author(s): Lyu L; Bagchi M; Ng KTW; Markoglou N; Chowdhury R; An C; Chen Z; Yang X;

The disposal of fossil fuel-based plastics poses a huge environmental challenge, leading to increased interest in biodegradable alternatives such as polylactic acid (PLA). This study focuses on the environmental impact and degradation of PLA face mask components under various conditions (UV (Ultraviolet) radiation, DI water, landfill leachate of various a ...

Article GUID: 39378804


Expansion of Auxiliary Activity Family 5 sequence space via biochemical characterization of six new copper radical oxidases

Author(s): Fong JK; Mathieu Y; Vo MT; Bellemare A; Tsang A; Brumer H;

Bacterial and fungal copper radical oxidases (CROs) from Auxiliary Activity Family 5 (AA5) are implicated in morphogenesis and pathogenesis. The unique catalytic properties of CROs also make these enzymes attractive biocatalysts for the transformation of small molecules and biopolymers. Despite a recent increase in the number of characterized AA5 members, ...

Article GUID: 38953370


Non-invasive paper-based sensors containing rare-earth-doped nanoparticles for the detection of D-glucose

Author(s): López-Peña G; Ortiz-Mansilla E; Arranz A; Bogdan N; Manso-Silván M; Martín Rodríguez E;

Today, diabetes mellitus is one of the most common diseases that affects the population on a worldwide scale. Patients suffering from this disease are required to control their blood-glucose levels several times a day through invasive methods such as piercing their fingers. Our NaGdF4: 5% Er3+, 3% Nd3+ nanoparticles demonstrate a remarkable ability to det ...

Article GUID: 38729020


Functional screening pipeline to uncover laccase-like multicopper oxidase enzymes that transform industrial lignins

Author(s): Sharan AA; Bellemare A; DiFalco M; Tsang A; Vuong TV; Edwards EA; Master ER;

Laccase-like multicopper oxidases are recognized for their potential to alter the reactivity of lignins for application in value-added products. Typically, model compounds are employed to discover such enzymes; however, they do not represent the complexity of industrial lignin substrates. In this work, a screening pipeline was developed to test enzymes si ...

Article GUID: 38000639


Identification of a Conserved Transcriptional Activator-Repressor Module Controlling the Expression of Genes Involved in Tannic Acid Degradation and Gallic Acid Utilization in Aspergillus niger

Author(s): Arentshorst M; Falco MD; Moisan MC; Reid ID; Spaapen TOM; van Dam J; Demirci E; Powlowski J; Punt PJ; Tsang A; Ram AFJ;

Tannic acid, a hydrolysable gallotannin present in plant tissues, consists of a central glucose molecule esterified with gallic acid molecules. Some microorganisms, including several Aspergillus species, can metabolize tannic acid by releasing gallic acid residues from tannic acid by secreting ta ...

Article GUID: 37744122


Functional analysis of the protocatechuate branch of the β-ketoadipate pathway in Aspergillus niger

Author(s): Sgro M; Chow N; Olyaei F; Arentshorst M; Geoffrion N; Ram AFJ; Powlowski J; Tsang A;

Bacteria and fungi catabolize plant-derived aromatic compounds by funneling into one of seven dihydroxylated aromatic intermediates, which then undergo ring fission and conversion to TCA cycle intermediates. Two of these intermediates, protocatechuic acid and catechol, converge on ß-ketoadipate which is further cleaved to succinyl-CoA and acetyl-CoA. Thes ...

Article GUID: 37399977


Identification of Genes Involved in the Degradation of Lignocellulose Using Comparative Transcriptomics

Author(s): Gruninger RJ; Tsang A; McAllister TA;

Lignocellulosic biomass represents an abundant, renewable resource that can be used to produce biofuels, low-cost livestock feed, and high-value chemicals. The potential of this bioresource has led to intensive research efforts to develop cost-effective methods to break down lignocellulose. The efficiency with which the anaerobic fungi (phylum Neocallimas ...

Article GUID: 37149538


Vitamin B5, a Coenzyme A precursor, rescues TANGO2 deficiency disease-associated defects in Drosophila and human cells

Author(s): Asadi P; Milev MP; Saint-Dic D; Gamberi C; Sacher M;

Mutations in the Transport and Golgi Organization 2 (TANGO2) gene are associated with intellectual deficit, neurodevelopmental delay and regression. Individuals can also present with an acute metabolic crisis that includes rhabdomyolysis, cardiomyopathy and cardiac arrhythmias, the latter of which are potentially lethal. While preventing metabolic crises ...

Article GUID: 36502486


Engineering the Enzyme Toolbox to Tailor Glycosylation in Small Molecule Natural Products and Protein Biologics

Author(s): Ouadhi S; López DMV; Mohideen FI; Kwan DH;

Many glycosylated small molecule natural products and glycoprotein biologics are important in a broad range of therapeutic and industrial applications. The sugar moieties that decorate these compounds often show a profound impact on their biological functions, thus biocatalytic methods for controlling their glycosylation are valuable. Enzymes from nature ...

Article GUID: 36444941


Evidence for ligninolytic activity of the ascomycete fungus Podospora anserina.

Author(s): van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Biotechnol Biofuels. 2020;13:75 Authors: van Erven G, Kleijn AF, Patyshakuliyeva A, Di Falco M, Tsang A, de Vries RP, van Berkel WJH, Kabel MA

Article GUID: 32322305


Effect and ameliorative mechanisms of polyoxometalates on the denitrification under sulfonamide antibiotics stress.

Author(s): Guo H, Chen Z, Lu C, Guo J, Li H, Song Y, Han Y, Hou Y

Bioresour Technol. 2020 Feb 22;305:123073 Authors: Guo H, Chen Z, Lu C, Guo J, Li H, Song Y, Han Y, Hou Y

Article GUID: 32145698


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