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ALACEN: A Holistic Herbaceous Biomass Fractionation Process Attaining a Xylose-Rich Stream for Direct Microbial Conversion to Bioplastics

Bertran Llorens, Salvador; Zhou, Wen; A. Palazzolo, Martin; Colpa, Dana; Euverink, Gert Jan Willem; Krooneman, Janneke (Bioconversion And Fermentation Technology); Deuss, Peter

Lignocellulose biorefining is a promising technologyfor the sustainable production of chemicals and biopolymers.Usually, when one component is focused on, the chemical natureand yield of the others are compromised. Thus, one of thebottlenecks in biomass biorefining is harnessing the maximumvalue from …

2024-05-08AlgemeenArtikel

Conversion of a Xylose-rich Stream from Biomass-biorefining into Polyhydroxyalkanoate (PHA) by Schlegelella thermodepolymerans

Krooneman, Janneke (Bioconversion And Fermentation Technology); Bertran Llorens, Salvador; Zhou, Wen; Palazzolo, Martin A.; Colpa, Dana; Euverink, Gerrit Jan Willem; Deuss, Peter

The transition to a biobased economy necessitates utilizing renewable resources as a sustainable alternative to traditional fossil fuels. Bioconversion is a way to produce many green chemicals from renewables, e.g., biopolymers like PHAs. However, fermentation and bioconversion processes mostly rely …

2023-09-13AlgemeenConferentiebijdrage

Polyhydroxyalkanoates (PHAs) synthesis and degradation by microbes and applications towards a circular economy

Zhou, Wen; Bergsma, Simon; Colpa, Dana Irene; Euverink, Gert-Jan Willem; Krooneman, Janneke (Bioconversion And Fermentation Technology)

Overusing non-degradable plastics causes a series of environmental issues, inferring a switch to biodegradable plastics. Polyhydroxyalkanoates (PHAs) are promising biodegradable plastics that can be produced by many microbes using various substrates from waste feedstock. However, the cost of PHAs production …

2023-09-01AlgemeenArtikel

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

Zhou, Wen; Colpa, Dana; Permentier, Hjalmar; Offringa, Ruben Ate; Rohrbach, Leon; Euverink, Gert Jan Willem; Krooneman, Janneke (Bioconversion And Fermentation Technology)

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 …

2023-07AlgemeenArtikel

Determination of monomer ratios in commercial polyhydroxyalkanoates using NMR and GC-MS

Keller, Erik (Biorefinery); Heeres, André (Biobased Chemistry & Refinery); Hoekstra, Henk

Plastic is one of the biggest contributors to pollution of the planet. Due to the low recyclability of oil-based plastics, most plastic is being disposed into the environment. According to plastic oceans, 10 million tons of plastic are dumped into oceans annually. Currently, researchers are developing …

2022-05-11AlgemeenConferentiebijdrage

The impact of carbon to nitrogen ratios and pH on the microbial prevalence and polyhydroxybutyrate production levels using a mixed microbial starter culture

Zhou, Wen; Colpa, Dana; Geurkink, Bert; Euverink, Gerrit Jan Willem; Krooneman, Janneke (Bioconversion And Fermentation Technology)

Growth conditions have been frequently studied in optimizing polyhydroxybutyrate (PHB) production, while few studies were performed to unravel the dynamic mixed microbial consortia (MMCs) in the process. In this study, the relationship between growth conditions (C/N ratios and pH) and the corresponding …

2022-03-10AlgemeenArtikel

Thauera aminoaromatica MZ1T Identified as a Polyhydroxyalkanoate-Producing Bacterium within a Mixed Microbial Consortium

Colpa, Dana; Zhou, Wen; Wempe, Jan Pier; Tamis, Jelmer; Krooneman, Janneke (Bioconversion And Fermentation Technology); Euverink, Gerrit Jan Willem; Stuart, Marc C. A.

Polyhydroxyalkanoates (PHAs) form a highly promising class of bioplastics for the transition from fossil fuel-based plastics to bio-renewable and biodegradable plastics. Mixed microbial consortia (MMC) are known to be able to produce PHAs from organic waste streams. Knowledge of key-microbes and their …

2020-02-21AlgemeenArtikel

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