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Production of biopolymers by bacterial isolates from a plant biomass-degrading consortium

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Autor(es):
Leonel, Tatiane Fernanda ; Castellane, Tereza Cristina Luque ; Caires, Guilherme Carvalho ; Lemos, Eliana Gertrudes de Macedo ; Colnago, Luiz Alberto ; Carareto-Alves, Lucia Maria
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY; v. 69, p. 12-pg., 2025-11-01.
Resumo

The present study investigates the potential of bacterial isolates from a plant biomass-degrading consortium for biopolymer production with the use of agroindustrial residues as carbon sources. The investigation focused on the synthesis of exopolysaccharides (EPS), bacterial cellulose (BC), and polyhydroxybutyrate (PHB). Notably, the isolates identified as Agrobacterium sp. and Cohnella sp. successfully produced BC and EPS from lignocellulosic residues. Although PHB production was not detected under the tested conditions, this outcome is likely related to the specific cultivation parameters and metabolic preferences of the isolates. HPLC and FTIR analysis revealed that the produced heteropolysaccharides predominantly consisted of glucose, galactose, and mannose, with low acetate content. The EPS exhibited exceptional emulsification properties, with indices exceeding 70 % when tested with hydrocarbons and used frying oil, both of which are classified as environmental pollutants. These findings highlight the dual benefits of utilizing agro-industrial residues for biopolymer production: addressing waste disposal issues while generating valueadded, eco-friendly materials. This study underscores the potential of microbial biopolymer synthesis as a sustainable strategy for waste valorization and industrial innovation. (AU)

Processo FAPESP: 19/20825-0 - Utilização de dados (meta)genômicos e consórcios microbianos para criação de coquetel enzimático para produção de metabólitos de interesse industrial através de biorrefinaria da biomassa lignocelulósica
Beneficiário:Eliana Gertrudes de Macedo Lemos
Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático