Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/86884
Título: | Ulva rigida valorization into poly(3-hydroxybutyrate), organic acids and functional ingredients |
Autor(es): | Leandro, Tânia Teles, Marco Dias, Joana Sofia Gomes Marques, Mafalda Rocha, Cristina M. R. da Fonseca, M. Manuela R. Cesário, M. Teresa |
Palavras-chave: | Halomonas elongata Ulva rigida poly(3-hydroxybutyrate) gluconic acid 2-oxoglutaric acid functional ingredients |
Data: | 14-Out-2023 |
Editora: | MDPI |
Revista: | Marine Drugs |
Citação: | Leandro, T.; Teles, M.; Gomes-Dias, J.S.; Marques, M.; Rocha, C.M.R.; da Fonseca, M.M.R.; Cesário, M.T. Ulva rigida Valorization into Poly(3-hydroxybutyrate), Organic Acids and Functional Ingredients. Mar. Drugs 2023, 21, 537. https://doi.org/10.3390/md21100537 |
Resumo(s): | Halomonas elongata 1H9T is a moderate halophilic strain able to produce poly(3-hydroxybutyrate) (P(3HB)), a biodegradable plastic, and gluconic acid, a valuable organic acid with wide industrial applications. In this work, the green alga Ulva rigida was used as platform to produce cultivation substrates for microbial conversion as well as functional ingredients, targeting its full valorization. The liquor obtained by autohydrolysis presented the highest concentration of oligosaccharides and protein, being an interesting feedstock to produce functional ingredients. The acid and/or enzymatic hydrolysis liquors are adequate as substrates for microbial processes. Shake flask assays with H. elongata revealed that the N-rich liquor produced after acidic treatment was the best suited for cell growth while the N-poor liquor produced by the enzymatic treatment of acid-pretreated algae residues produced the highest P(3HB) titers of 4.4 g/L. These hydrolysates were used in fed-batch cultivations as carbon and protein sources for the co-production of gluconic acid and polymer achieving titers of 123.2 g/L and 7.2 g/L, respectively. Besides gluconic acid, the Krebs cycle intermediate 2-oxoglutaric acid, also called alpha-ketoglutaric acid (KGA), was produced. Therefore, the co-production of P(3HB) and acids may be of considerable interest as an algal biorefinery valorization strategy. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/86884 |
DOI: | 10.3390/md21100537 |
e-ISSN: | 1660-3397 |
Versão da editora: | https://www.mdpi.com/1660-3397/21/10/537 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_56473_1.pdf | 2,86 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons