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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 9, No. 1, 2006, pp. 40-45
Bioline Code: ej06005
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 9, No. 1, 2006, pp. 40-45

 es Lactic acid production by a strain of Lactococcus lactis check for this species in other resources subs lactis isolated from sugar cane plants
Cock, Liliana Serna & de Stouvenel, Aida Rodríguez

 
 en
Cock, Liliana Serna & de Stouvenel, Aida Rodríguez

Abstract

A Lactococcus lactis check for this species in other resources subs lactis strain was selected from 20 lactic acid strains isolated from the leaves of sugar cane plants, variety CC 85-92. The effects of substrate concentration and pH control on lactic acid (LA) production, glucose conversion (GC) and yield (Yp/s) were investigated using this strain. In batch fermentation at 32°C, with 60 gl-1 of glucose and a pH of 6.0, concentrations of up to 35 gl-1 of lactic acid were obtained. Maximum production and glucose conversion was achieved at low glucose concentrations. The strain shows great potential for lactic acid production from glucose, even without using pH control during fermentation (13.7 gl-1).

Keywords
CC 85-92, leaves of sugar cane, pH control, substrate concentration

 
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