USE OF DAIRY INDUSTRY EFFLUENTS AND WASTE BEER YEAST FOR THE PRODUCTION OF YEAST EXTRACT AND ACETIC ACID
This work was carried out with the purpose to optimize physical chemical parameters obtain a microbial biomass from Kluyveromyces marxianus NRRL-Y-1109 and Saccharomyces cerevisiae. The yeasts were grown on sweet whey deproteinized, supplemented with nitrogen and vitamins sources and mollasses as ca...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Perú |
| Institución: | Universidad Nacional Mayor de San Marcos |
| Repositorio: | Revistas - Universidad Nacional Mayor de San Marcos |
| Idioma: | español |
| OAI Identifier: | oai:revistasinvestigacion.unmsm.edu.pe:article/4566 |
| Acceso en línea: | https://revistasinvestigacion.unmsm.edu.pe/index.php/quim/article/view/4566 |
| Access Level: | acceso abierto |
| Palabra clave: | Beer DQO acetic fermentation vinegar Cervecerías fermentación acética vinagre |
| Sumario: | This work was carried out with the purpose to optimize physical chemical parameters obtain a microbial biomass from Kluyveromyces marxianus NRRL-Y-1109 and Saccharomyces cerevisiae. The yeasts were grown on sweet whey deproteinized, supplemented with nitrogen and vitamins sources and mollasses as carbon source far S. cerevísíae. The fermentation parameters were: An pH 4.5; Temperature 30ºC and an aeration rate of 1.75 VVM; Agitation speed 600 RPM, Lactase concentration 5 gi ; (NHJ2S04 6 g/L; Yeast extract 1.5 g/L . The average biomass yield obtained was 0.56 g/g lactase far K. marxianus and 0.46 g/g S. Cerevisae respectively grown on sweet whey deproteinized & molasses a cellular concentration of 12.75 g/L & 11.52 g/L respectively at the end of the fermentation. lt was obtained acetic acid (3.5 g/L) by aerobic fermentation of brewery liquid effluent. |
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