Título:
Bacteria-polymer composite material for glycerol valorization
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Autor:
Ripoll, Magdalena
Soriano, Nicolás
Ibarburu, Sofía
Dalies, Malena
Mulet, Ana Paula
Betancor, Lorena
Soriano, Nicolás
Ibarburu, Sofía
Dalies, Malena
Mulet, Ana Paula
Betancor, Lorena
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Tipo de documento:
Artículo
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POLIMEROS HIBRIDOS
BIOCATALISIS
NANOMATERIALES
GLICEROL
GLUCONOBACTER
BIOCATALISIS
NANOMATERIALES
GLICEROL
GLUCONOBACTER
Año de publicación:
2023
Contenido:
Resumen:
Bacterial immobilization is regarded as an enabling technology to improve the stability and reusability of biocatalysts. Natural polymers are often used as immobilization matrices but present certain drawbacks, such as biocatalyst leakage and loss of physical integrity upon utilization in bioprocesses. Herein, we prepared a hybrid polymeric matrix that included silica nanoparticles for the unprecedented immobilization of the industrially relevant Gluconobacter frateurii (Gfr). This biocatalyst can valorize glycerol, an abundant by-product of the biodiesel industry, into glyceric acid (GA) and dihydroxyacetone (DHA). Different concentrations of siliceous nanosized materials, such as biomimetic Si nanoparticles (SiNps) and montmorillonite (MT), were added to alginate. These
hybrid materials were significantly more resistant by texture analysis and presented a more compact structure as seen by scanning electron microscopy. The preparation including 4% alginate with 4% SiNps proved to be the most resistant material, with a homogeneous distribution of the biocatalyst in the beads as seen by confocal microscopy using a fluorescent mutant of Gfr. It produced the highest amounts of GA and DHA and could be reused for up to eight consecutive 24 h reactions with no loss of physical integrity and negligible bacterial leakage. Overall, our results indicate a new approach to generating biocatalysts using hybrid biopolymer supports.
Descripción:
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MDPI
EN:
Polymers v.15, n°11, 2023. -- e2514
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Citación:
Ripoll, M, Soriano, N, Ibarburu, S. y otros. "Bacteria-polymer composite material for glycerol valorization". Polymers [en línea] 2023. 15(11): e2514, doi: https://doi.org/10.3390/polym15112514
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Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| AA Ripoll, M. et al v.15 Polymers 2023.pdf | — | 4.17 MB | Adobe PDF |