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. 2021 Jan 11;13(2):226. doi: 10.3390/polym13020226

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Schematic of functionalization of PMMA/Fe₃O₄ nanofibers by the EDC/NHS method and covalent immobilization of laccase. (B) Effect of pH value on tetracycline removal by free enzyme (a), covalently bound laccase (b) and encapsulated laccase (c). (C) Effect of temperature on tetracycline removal by the free enzyme (a), covalent bound laccase (b) and encapsulated laccase (c) [196].