Batch ethanol fermentation: the correlation between the fermentation efficiency and the biomass initial concentration depends on what is considered as produced ethanol



Document title: Batch ethanol fermentation: the correlation between the fermentation efficiency and the biomass initial concentration depends on what is considered as produced ethanol
Journal: Brazilian journal of microbiology
Database: PERIÓDICA
System number: 000291260
ISSN: 1517-8382
Authors: 1
Institutions: 1Instituto Maua de Tecnologia, Escola de Engenharia Maua, Sao Caetano do Sul, Sao Paulo. Brasil
Year:
Season: Ene-Mar
Volumen: 37
Number: 1
Pages: 87-89
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract Although numerous studies have examined many of the factors that affect the efficiency of batch ethanol fermentation, little attention has been paid to the influence of the biomass concentration on this efficiency. This paper shows that the influence of the biomass initial concentration on the fermentation efficiency depends on what is considered "produced ethanol". If only the ethanol present in the medium aqueous phase at fermentation completion is considered, the fermentation efficiency linearly decreases when the biomass initial concentration increases. If, however, the intracellular ethanol is also considered as produced ethanol, the fermentation efficiency is not affected by the biomass concentration
Portuguese abstract Embora muitos estudos tenham avaliado muitos dos fatores que afetam a eficiência da fermentação etanólica, a influência da concentração da biomassa na eficiência do processo tem recebido pouca atenção. Esse trabalho mostra que a influencia da concentração inicial de biomassa depende do que se considera "etanol produzido". Se, terminada a fermentação, considera-se como etanol produzido apenas aquele existente na fase aquosa do meio, o rendimento da fermentação decresce linearmente quando a concentração inicial de biomassa aumenta. Entretanto, se o etanol intracelular também é considerado, a concentração da biomassa não afeta o rendimento da fermentação
Disciplines: Química,
Biología
Keyword: Fermentaciones,
Biología celular,
Rendimiento,
Fermentación de etanol,
Etanol intracelular,
Concentración de biomasa
Keyword: Chemistry,
Biology,
Fermentation,
Cell biology,
Efficiency,
Ethanol fermentation,
Intracellular ethanol,
Biomass concentration
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