Mineralization of 13C-labeled polyethylene by marine Bacillus velezensis MT9
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Autor:in (Körperschaft)
Publikationsdatum
2026
Typ der Arbeit
Studiengang
Sammlung
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
International Biodeterioration & Biodegradation
Themenheft
DOI der Originalpublikation
Link
Zugehörige Forschungsdaten
Reihe / Serie
Reihennummer
Jahrgang / Band
209
Ausgabe / Nummer
Seiten / Dauer
106294
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
In the marine environment, plastic debris breaks down into smaller entities known as microplastics. Polyethylene (PE) is the main source of microplastics. In a previous study, we showed that marine Bacillus MT9 and Vreelandella strains (MT1, MT11) were able to degrade untreated PE based on SEM, gravimetric weight loss and FTIR analysis. In this study, we performed stable isotope tracing assays, measuring the production of 13 CO 2 from 13 C-PE powder (untreated or UV-treated) incubated with B. velezensis MT9, V. titanicae MT11 or V. venusta MT1 isolates under aerobic conditions in the presence and absence of yeast extract as co-nutrient source. Only B. velezensis MT9 exhibited mineralization activities towards untreated and UV-treated 13 C-PE with the highest 13 C-mass loss of 0.199% recorded for UV-treated 13 C-PE with yeast extract, after 14 days incubation. In this study, we demonstrated the mineralization of 13 C-PE by B. velezensis MT9. Furthermore, we also confirmed that photodegradation of plastic is a key process to enhance the biodegradation of PE. These findings suggest that Bacillus sp. could potentially degrade PE plastic waste in marine environment, as they can slowly mineralize PE even when other nutrients are present. Bacterial 13 C-PE mineralization was evaluated by stable isotope tracing assays. Bacillus velezensis MT9 mineralizes Untreated and UV-treated 13 C-PE powder. Up to 0.199% mass loss was observed for UV-treated 13 C-PE in 14 days. UV and yeast extract enhanced 13 C-PE mineralization by B. velezensis. Vreelandella cultures showed no mineralization activities toward untreated 13 C-PE.
Schlagwörter
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
0964-8305
1879-0208
1879-0208
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
peer-reviewed
Open Access-Status
Hybrid
Lizenz
Zitation
Bajo, K., Kolvenbach, B., Corvini, P., Fava, F., & Raddadi, N. (2026). Mineralization of 13C-labeled polyethylene by marine Bacillus velezensis MT9. International Biodeterioration & Biodegradation, 209, 106294. https://doi.org/10.1016/j.ibiod.2026.106294