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Recycle of spent cells from anaerobic succinate fermentation / 生物工程学报
Chinese Journal of Biotechnology ; (12): 1276-1280, 2010.
Artículo en Chino | WPRIM | ID: wpr-351596
ABSTRACT
Spent cells recovered from anaerobic fermentation by Actinobacillus succinogenes were used as nitrogen source for succinic acid production. Three methods were investigated for cell wall-breaking. The results showed that enzymatic hydrolysis was more effective for higher succinic acid yield. When the enzymatic hydrolysate of spent cells was added to reach a total nitrogen concentration 1.11 g/L (equivalent to 10 g/L yeast extract), the succinic acid concentration was 42.0 g/L, but it increased slightly when enhancing the level of enzymatic hydrolysate. However, when 5 g/L yeast extract was supplemented with the enzymatic hydrolysate of spent cells, the succinic acid concentration reached 75.5 g/L after 36 hours and, the succinic acid productivity was 2.10 g/(L x h), which increased by 66.7% compared with the fermentation using 10 g/L yeast extract. Therefore, enzymatic hydrolysate of spent cells could replace 50% yeast extract in the original medium for succinic acid production.
Asunto(s)
Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Farmacología / Actinobacillus / Ácido Succínico / Medios de Cultivo / Fermentación / Anaerobiosis / Residuos Industriales / Metabolismo Idioma: Chino Revista: Chinese Journal of Biotechnology Año: 2010 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Farmacología / Actinobacillus / Ácido Succínico / Medios de Cultivo / Fermentación / Anaerobiosis / Residuos Industriales / Metabolismo Idioma: Chino Revista: Chinese Journal of Biotechnology Año: 2010 Tipo del documento: Artículo