RT info:eu-repo/semantics/article
T1 Valorization of polyester wastes into polyhydroxyalkanoates via a one-step microbial fermentation process
A1 Santos Beneit, Fernando
A1 Bordel Velasco, Sergio
A1 Martín González, Diego
A1 Fuente Tagarro, Carlos de la
A1 García Depraect, Octavio
A1 Börner, Tim
A1 Börner, Rosa Aragão
A1 Muñoz Torre, Raúl
K1 Polyhydroxyalkanoates (PHA)
K1 Poly(3-hydroxybutyrate) (PHB)
K1 Paracoccus denitrificans
K1 Polyesters
K1 Monomers
K1 Plastic bio-upcycling
K1 Plastic waste
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB Polyhydroxyalkanoates (PHAs) are promising biodegradable alternatives to petroleum-based plastics, yet theirlarge-scale application remains hindered by high production costs. Here, a direct and cost-effective microbialstrategy to upcycle polyester waste into PHAs using Paracoccus denitrificans was investigated. Remarkably, thebacterium metabolized 10 out of 12 tested plastic-derived monomers and efficiently accumulated intracellularPHAs, even when fed with pretreated mixed polyester waste instead of purified substrates. More than 80 % ofpolyester monomers supported growth, and medium optimization through nitrogen reduction boosted PHAcontent up to 30 % of cell dry weight. This one-step process circumvents costly separation steps, enabling thevalorization of heterogeneous plastic mixtures and significantly reducing both economic and processing burdens.By transforming post-consumer plastics into high-value biopolymers, this work positions P. denitrificans as aversatile platform for circular bioeconomy strategies, directly supporting global sustainability agendas andadvancing sustainable bioprocessing for the green industry
PB Elsevier
SN 1359-5113
YR 2026
FD 2026
LK https://uvadoc.uva.es/handle/10324/81658
UL https://uvadoc.uva.es/handle/10324/81658
LA eng
NO Process Biochemistry, 2026, vol. 161, p. 283-289
NO Producción Científica
DS UVaDOC
RD 21-ene-2026