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Fucose-containing exopolysaccharide produced by the newly isolated Enterobacter strain A47 DSM 23139

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Resumo:Enterobacter strain A47 (DSM 23139) was found to produce a fucose-containing exopolysaccharide (EPS). The EPS is composed of fucose, galactose, glucose, pyruvate, succinate and acetate in the molar ratios 1.6:1.3:1.1:1.2:0.7:1.5. It is a high molecular weight (5.8×106) homogeneous biopolymer, as indicated by the low polydispersity value (1.3). The steady shear flow properties of the EPS aqueous solutions are similar to guar gum and fucogel, and its viscoelastic properties indicate the formation of viscous aqueous solutions with entangled polymer chains. Additionally, the EPS has demonstrated good flocculating and emulsion stabilizing capacities, comparable to some commercially available products. These functional propertiesmakethe fucose-containing EPS a good alternative tomanysynthetic polymers, as well as other natural polysaccharides, in several applications in the food, pharmaceutical, cosmetic, textile, paper and petroleum industries.
Autores principais:Freitas, Filomena
Outros Autores:Alves, Vitor D.; Torres, Cristiana A.V.; Cruz, Madalena; Sousa, Isabel; Melo, Maria João; Ramos, Ana M.; Reis, Maria A.M.
Assunto:fucose exopolysaccharide rheology emulsifying activity flocculating activity
Ano:2011
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade de Lisboa
Idioma:inglês
Origem:Repositório da Universidade de Lisboa

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