Your browser doesn't support javascript.
loading
Lactic acid production by Carnobacterium sp. isolated from a maritime Antarctic lake using eucalyptus enzymatic hydrolysate.
Camesasca, Laura; de Mattos, Juan Andrés; Vila, Eugenia; Cebreiros, Florencia; Lareo, Claudia.
Afiliação
  • Camesasca L; Departamento de Bioingeniería, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, CP 11300, Montevideo, Uruguay.
  • de Mattos JA; Departamento de Bioingeniería, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, CP 11300, Montevideo, Uruguay.
  • Vila E; Departamento de Bioingeniería, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, CP 11300, Montevideo, Uruguay.
  • Cebreiros F; Departamento de Bioingeniería, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, CP 11300, Montevideo, Uruguay.
  • Lareo C; Departamento de Bioingeniería, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, CP 11300, Montevideo, Uruguay.
Biotechnol Rep (Amst) ; 31: e00643, 2021 Sep.
Article em En | MEDLINE | ID: mdl-34168965
Carnobacterium sp., a lactic acid bacterium isolated from a maritime Antarctic lake, was evaluated for lactic acid production from a lignocellulosic hydrolysate. Eucalyptus sawdust, a residue from pulp and paper industries, was subjected to alkaline pretreatment to enhance its enzymatic hydrolysis. Fermentations were performed without and with pH control using eucalyptus enzymatic hydrolysate containing a mixture of glucose and xylose sugars. The sugars were successfully converted into lactic acid in 24 h, resulting in 7.6 g/L of lactic acid and a product yield of 0.50 g/g for pH controlled at 6.5. Fed-batch fermentation performed at a controlled pH of 6.5 improved both the lactic acid production (30 g/L) and the biomass growth (4.2 g/L). l-lactic acid optical purity higher than 95 % was obtained. These results demonstrated the potential usage of Carnobacterium sp in l-lactic acid production from eucalyptus.
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Biotechnol Rep (Amst) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Uruguai País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Biotechnol Rep (Amst) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Uruguai País de publicação: Holanda