Improvement of xylanase production by a parasexual cross between Aspergillus niger strains
Braz. arch. biol. technol
;
46(2): 177-181, Mar. 2003. graf
Artículo
en Inglés
| LILACS
| ID: lil-351390
ABSTRACT
A diploid strain (D4) isolated via parasexual recombination between two Aspergillus niger xylanase overproducing mutants was characterised in terms of enzyme production and catabolite repression by glucose. This strain increased xylanase production (607 nkat/ml), which was nearly 100 percent higher than titers achieved by the wild type strain (305 nkat/ml) and 28 percent higher than the best mutant used to induce parasexual cycle. Diploid D4 was also less sensitive to carbon catabolite repression by glucose, since xylanolytic activity was detected under conditions normally repressing production by the wild type strain. No decrease in maximal xylanase levels was observed in the presence of glucose for diploid D4
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Índice:
LILACS (Américas)
Idioma:
Inglés
Revista:
Braz. arch. biol. technol
Asunto de la revista:
Biologia
Año:
2003
Tipo del documento:
Artículo
País de afiliación:
México
Institución/País de afiliación:
Universidad Autónoma Metropolitana/MX
/
Universidad de Guadalajara/MX
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