Role of Surface Enhancement in the Enzymatic Cross-Linking of Lignosulfonate Using Alternative Downstream Techniques.

Autor:	Padhi SSP; Wood Kplus - Competence Center for Wood Composites & Wood Chemistry, Kompetenzzentrum Holz GmbH, Altenberger Straße 69, Linz A-4040, Austria.; Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln an der Donau 3430, Austria., Jimenez Bartolome M; Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln an der Donau 3430, Austria., Nyanhongo GS; Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln an der Donau 3430, Austria.; Department of Biotechnology and Food Technology, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa., Schwaiger N; Sappi Papier Holding GmbH, BruckerStrasse 21, Gratkorn 8101, Austria., Pellis A; Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln an der Donau 3430, Austria.; Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, via Dodecaneso 31, Genova 16146, Italy., van Herwijnen HWG; Wood Kplus - Competence Center for Wood Composites & Wood Chemistry, Kompetenzzentrum Holz GmbH, Altenberger Straße 69, Linz A-4040, Austria.; Institute of Wood Technology and Renewable Materials, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 24, Tulln an der Donau 3430, Austria., Guebitz GM; Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln an der Donau 3430, Austria.
Jazyk:	angličtina
Zdroj:	ACS omega [ACS Omega] 2022 Jun 27; Vol. 7 (27), pp. 23749-23758. Date of Electronic Publication: 2022 Jun 27 (Print Publication: 2022).
DOI:	10.1021/acsomega.2c02421
Abstrakt:	Lignosulfonate (LS), one of the byproducts of the paper and pulp industry, was mainly used as an energy source in the last decade until the valorization of lignin through different functionalization methods grew in importance. Polymerization using multicopper oxidase laccase (from the Myceliophthora thermophila fungus) is one of such methods, which not only enhances properties such as hydrophobicity, flame retardancy, and bonding properties but can also be used for food and possesses pharmaceutical-like antimicrobial properties and aesthetic features of materials. Appropriate downstream processing methods are needed to produce solids that allow the preservation of particle morphology, a vital factor for the valorization process. In this work, an optimization of the enzymatic polymerization via spray-drying of LS was investigated. The response surface methodology was used to optimize the drying process, reduce the polymerization time, and maximize the dried mass yield. Particles formed showed a concave morphology and enhanced solubility while the temperature sensitivity of spray-drying protected the phenol functionalities beneficial for polymerization. Using the optimized parameters, a yield of 65% in a polymerization time of only 13 min was obtained. The experimental values were found to be in agreement with the predicted values of the factors ( R 2 : 95.2% and p -value: 0.0001), indicating the suitability of the model in predicting polymerization time and yield of the spray-drying process. Competing Interests: The authors declare no competing financial interest. (© 2022 The Authors. Published by American Chemical Society.)
Databáze:	MEDLINE
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