Lactic acid production by Carnobacterium sp. isolated from a maritime Antarctic lake using eucalyptus enzymatic hydrolysate.
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 24â¯h, resulting in 7.6â¯g/L of lactic acid and a product yield of 0.50â¯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 (30â¯g/L) and the biomass growth (4.2â¯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.
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