Utilize este identificador para referenciar este registo: https://recil.grupolusofona.pt/handle/10437/10408
Título: Upgrading end-of-line residues of the red seaweed Gelidium sesquipedale to polyhydroxyalkanoates using Halomonas boliviensis
Autores: Tuna, Stepan
Izaguirre, Jon
Bondar, Marina
Marques, Mafalda
Fernandes, Pedro Carlos de Barros
Fonseca, Maria da
Cesário, Maria
Palavras-chave: BIOTECNOLOGIA
BIOTECHNOLOGY
GELIDIUM SESQUIPEDALE
GELIDIUM SESQUIPEDALE
HALOMONAS BOLIVIENSIS
HALOMONAS BOLIVIENSIS
RESÍDUOS DE ALGAS MARINHAS
SEAWEED RESIDUES
POLI-3-HIDROXIBUTIRATO
POLY-3-HYDROXYBUTYRATE
RESÍDUOS DE MACROALGAS
MACROALGAE RESIDUES
ENGENHARIA BIOTECNOLÓGICA
BIOTECHNOLOGY ENGINEERING
ALGAS
ALGAE
Data: Set-2020
Editora: Elsevier
Resumo: Agar extraction from Gelidium and Gracilaria red seaweed species produces hundred thousand ton of carbohydrate-rich residues annually. Gelidium sesquipedale waste biomass obtained after agar extraction, still contained 44.2 % w/w total carbohydrates (dry-weight basis). These residues were biologically up-graded to poly-3-hydroxybutyrate (P3HB) after saccharification of their carbohydrate fraction to simple sugars. A combined hydrolysis treatment using sulfamic acid followed by enzymatic hydrolysis with cellulases produced a glucose-rich hydrolysate with a negligible content of inhibitors. With this treatment a sugar yield of circa 30 % (g glucose/g biomass) was attained. The algal hydrolysates were assessed as carbon source for the production of P3HB by the halotolerant bacteria Halomonas boliviensis. A cell concentration of 8.3 g L−1 containing 41 % (w/w) of polymer and a yield (YP/S) of 0.16 gpolymer/gglucose were attained in shake flask assays. In this work, cellulose-rich seaweed waste was shown to be an upgradable, sustainable source of carbohydrates.
Descrição: Biotechnology Reports
URI: https://www.sciencedirect.com/science/article/pii/S2215017X20301892#!
https://recil.grupolusofona.pt/handle/10437/10408
Aparece nas colecções:FE - Artigos de Revistas Internacionais com Arbitragem Científica



Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.