Influences of phenolic compounds on citric acid productivity by Aspergillus niger in stirred fermentor
Electron. j. biotechnol
;
13(6): 8-9, Nov. 2010. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-591912
ABSTRACT
Influences of phenol, alpha-naphtol and beta-naphtol, which are toxic chemicals, on citric acid biosynthesis and biomass in the artificial culture setting of Aspergillus niger using batch fermenter are examined in the most favorable fermentation conditions, and a model is proposed. Addition of certain concentrations of phenol, alpha-naphtol and beta-naphtol to the culture increases the citric acid production. According to this model, maximum citric acid concentration is 48.3 g L-1 in a culture that does not contain any toxic chemicals, whereas the maximum concentrations obtained in cultures containing 25 mg L-1 phenol, 25 mg L-1 alpha-naphtol and 15 mg L-1 beta-naphtol are 62.5 g L-1, 78.1 g L-1 and 86.0 g L-1, respectively. Moreover, addition of toxic chemicals to the culture reduces fermentation time by 24 hrs.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Fenóis
/
Aspergillus niger
/
Substâncias Tóxicas
/
Ácido Cítrico
/
Naftóis
Idioma:
Inglês
Revista:
Electron. j. biotechnol
Assunto da revista:
Biotecnologia
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Turquia
Instituição/País de afiliação:
Ahi Evran University/TR
/
Gazi University/TR
/
Kirikkale University/TR
Similares
MEDLINE
...
LILACS
LIS