Results 11 to 20 of about 6,122,579 (225)

Impact of enological tannins on laccase activity [PDF]

OENO One, 2019
Aims: The aim of this research was to determine and quantify the ability of enological tannins to reduce laccase activity and, consequently, to protect wine color against enzymatic browning and/or oxidasic haze.
Adeline Vignault, Olga Pascual, Michael Jourdes, Virginie Moine, Marc Fermaud, Jean Roudet, Joan Miquel Canals, Pierre-Louis Teissedre, Fernando Zamora   +8 more
doaj   +2 more sources

Laccase Immobilization Strategies for Application as a Cathode Catalyst in Microbial Fuel Cells for Azo Dye Decolourization [PDF]

Frontiers in Microbiology, 2021
Enzymatic biocathodes have the potential to replace platinum as an expensive catalyst for the oxygen reduction reaction in microbial fuel cells (MFCs). However, enzymes are fragile and prone to loss of activity with time.
Priyadharshini Mani, V. T. Fidal, Taj Keshavarz, T. S. Chandra, Godfrey Kyazze   +4 more
doaj   +2 more sources

Electrochemical Evaluation of Laccase Activity in Must

Chemosensors, 2020
As laccase (produced by Botrytis cinerea) can significantly alter the properties of wine, winemakers frequently use commercially available colorimetric kits and spectrophotometers to measure the activity of this enzyme in grapes, must and wine.
Szilveszter Gáspár, Elena Brinduse, Alina Vasilescu   +2 more
doaj   +2 more sources

Extracellular laccase activity in Tetraploa aristata [PDF]

Biotechnology Letters, 2002
Tetraploa aristata CLPS 419 produced maximum extracellular laccase activity at over 9 mU ml−1 in shaking cultures supplemented with glucose and 3.5 mU ml−1 in sucrose-grown ones. Laccase activity did not exceed 0.7 mU ml−1 in stationary cultures with glucose and was not detected in similar cultures with sucrose or in ones grown on lignin.
Saparrat, Mario Carlos Nazareno, Cabello, Marta Noemí, Arambarri, Angélica Margarita   +2 more
openaire   +3 more sources

Effect of various conditions on stabilizing laccase activity in Bacillus subtilis spores and evaluating the ability of laccase to decolorize azo dyes [PDF]

Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ
Laccase is a polyphenol oxidase, and stabilizing its activity can be challenging. Therefore, developing a method to stabilize laccase activity is of practical significance.
Đỗ Thị Hồng, Lương Bảo Uyên
doaj   +2 more sources

A Fungal Ascorbate Oxidase with Unexpected Laccase Activity. [PDF]

Int J Mol Sci, 2020
Ascorbate oxidases are an enzyme group that has not been explored to a large extent. So far, mainly ascorbate oxidases from plants and only a few from fungi have been described. Although ascorbate oxidases belong to the well-studied enzyme family of multi-copper oxidases, their function is still unclear. In this study, Af_AO1, an enzyme from the fungus
Braunschmid V, Fuerst S, Perz V, Zitzenbacher S, Hoyo J, Fernandez-Sanchez C, Tzanov T, Steinkellner G, Gruber K, Nyanhongo GS, Ribitsch D, Guebitz GM.   +11 more
europepmc   +7 more sources

Carbon Nanotube Covalently Attached Laccase Biocathode for Biofuel Cell [PDF]

Journal of Pure and Applied Chemistry Research, 2013
Biocathode for biofuel cell was prepared by covalently immobilizedLaccaseon CNT (CNT-Laccase) using glutaraldehyde as conjugates. Successful laccase immobilization was confirmed by Fourier Transform Infrared (FTIR) Spectrophotometry, Surface Electron ...
Rizmahardian Ashari Kurniawan, Aulani Aulanni'am, Fa-Kuen Shieh, Peter Po-Jhen Chu   +3 more
doaj   +1 more source

Laccase activity measurement by FTIR spectral fingerprinting

Enzyme and Microbial Technology, 2019
Laccases (EC 1.10.3.2) are enzymes known for their ability to catalyze the oxidation of phenolic compounds using molecular oxygen as the final electron acceptor. Laccase activity is commonly determined by monitoring spectrophotometric changes (absorbance) of the product or substrate during the enzymatic reaction. Fourier Transform Infrared Spectroscopy
Valentina Perna, Andreas Baum, Heidi A. Ernst, Jane W. Agger, Anne S. Meyer   +4 more
openaire   +4 more sources

Laccase Activity in Trichoderma virens

, 2011
Fungal laccases are involved in multiple functions, such as lignin degradation, pigments (melanin) synthesis and degradation, detoxification and pathogenesis. Furthermore, they are useful biocatalysts for several biotechnological applications.The laccase gene function was previously analysed in Trichoderma virens, an effective biocontrol agent: six ...
Mannella L., Guglielminetti L., Vannacci G., VERGARA, Mariarosaria   +3 more
core   +4 more sources

Axial Boron Coordination Reconstructs Stereostructure of Cu Single-Atom Nanozymes for Efficient Water-Phase Chemical Sensing. [PDF]

Angew Chem Int Ed Engl
Sun et al. proposed an axial boron coordination strategy to reconstruct the stereostructure of Cu SAzymes and enable them to serve as efficient laccase mimics for high‐throughput smart sensor array detection of phenolic pollutants in water phases. ABSTRACT Developing single‐atom nanozymes with stereoconfigurations is a new paradigm for biomimetic ...
Sun Q, Shi H, Liu S, Li Z, Yang Y, Li F, Wu W, Hu Q, Liang K.   +8 more
europepmc   +3 more sources