Does poly-3-hydroxybutyrate biodegradation affect the quality of soil organic matter?

Autor: Palucha N; Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic; Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium., Fojt J; Textile Testing Institute, Cejl 480/12, 602 00, Brno, Czech Republic., Holátko J; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic; Agrovyzkum Rapotin, Ltd, Výzkumniků 267, 788 13, Rapotin, Czech Republic., Hammerschmiedt T; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic., Kintl A; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic; Agricultural Research, Ltd, Zahradní 400/1, 664 41, Troubsko, Czech Republic., Brtnický M; Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic., Řezáčová V; Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic., De Winterb K; Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium., Uitterhaegen E; Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium., Kučerík J; Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic. Electronic address: kucerik@email.cz.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Mar; Vol. 352, pp. 141300. Date of Electronic Publication: 2024 Jan 27.
DOI: 10.1016/j.chemosphere.2024.141300
Abstrakt: The search for eco-friendly substitutes for traditional plastics has led to the production of biodegradable bioplastics. However, concerns have been raised about the impact of bioplastic biodegradation on soil health. Despite these concerns, the potential negative consequences of bioplastics during various stages of biodegradation remain underexplored. Therefore, this study aims to investigate the impact of micro-bioplastics made of poly-3-hydroxybutyrate (P3HB) on the properties of three different soils. In our ten-month experiment, we investigated the impact of poly-3-hydroxybutyrate (P3HB) on Chernozem, Cambisol, and Phaeozem soils. Our study focused on changes in soil organic matter (SOM), microbial activity, and the level of soil carbon and nitrogen. The observed changes indicated an excessive level of biodegradation of SOM after the soils were enriched with micro-particles of P3HB, with concentrations ranging from 0.1% to 3%. The thermogravimetric analysis confirmed the presence of residual P3HB (particularly in the 3% treatment) and underscored the heightened biodegradation of SOM, especially in the more stable SOM fractions. This was notably evident in Phaeozem soils, where even the stable SOM pool was affected. Elemental analysis revealed changes in soil organic carbon content following P3HB degradation, although nitrogen levels remained constant. Enzymatic activity was found to vary with soil type and responded differently across P3HB concentration levels. Our findings confirmed that P3HB acts as a bioavailable carbon source. Its biodegradation stimulates the production of enzymes, which in turn affects various soil elements, indicating complex interactions within the soil ecosystem.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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