Insight into polyhydroxyalkanoate (PHA) production from xylose and extracellular PHA degradation by a thermophilic Schlegelella thermodepolymerans

Wen Zhou, Dana Colpa, Hjalmar Permentier, Ruben Ate Offringa, Leon Rohrbach, Gert Jan Willem Euverink, Janneke Krooneman

    Onderzoeksoutput: ArticleAcademicpeer review

    Samenvatting

    Accumulation of non-degradable plastic waste in the environment might be prevented by the use of biodegradable polyhydroxyalkanoate (PHA). In this study, the thermophile Schlegelella thermodepolymerans produced up to 80 wt% PHA based on dry cell mass. The largest PHA granules were found in the cells within 48 h using 20 g/L xylose, a C/N ratio of 100, an initial pH of 7, at 50 °C. The substrate consumption, pH changes, and cell growth were monitored, revealing the time dependency of PHA production in S. thermodepolymerans. The metabolic pathways from xylose to PHA were identified based on proteomic analysis, revealing involvement of classic phaCAB, de novo fatty acid biosynthesis, and fatty acid β-oxidation. In addition, it was shown that S. thermodepolymerans degraded extracellular PHA with a high efficiency at 50 °C.
    Originele taal-2English
    TijdschriftResources, Conservation and Recycling
    Volume194
    Vroegere onlinedatum24 apr. 2023
    DOI's
    StatusPublished - jul. 2023

    Keywords

    • PHA productie
    • bacteriën
    • biopolymeren

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