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Título: | On-line monitoring of citric acid production in solid-state culture by respirometry |
Autor: | Pintado, José CSIC ORCID; Lonsane, B. K.; Gaime-Perraud, I.; Roussos, S. | Palabras clave: | Solid-state culture Respirometry Citric acid Mussel processing wastes Aspergillus niger |
Fecha de publicación: | 1998 | Editor: | Elsevier | Citación: | Process Biochemistry 33(5): 513-518 (1998) | Resumen: | The aim of this work was to study the possibility of monitoring citric acid production from mussel processing wastes (MPW) by Aspergillus niger in solid-state culture (SSC) on an inert support. This was conducted by measuring CO2 and 02 concentration in exhaust gases, using an automatic sampler connected to a gas chromatograph and a data acquisition system. The procedure permitted information on the physiological state of the culture to be obtained. A relationship between citric acid accumulation and a decreasc in CO, production was found, allowing citric acid production to be followed in real-time. Moreover, respiratory activity (p,.) can be estimated and the effect of different variables on this parameter studied. Initial nitrogen concentration, a critical factor for achieving high production of citric acid from MPW in submerged culture. revealed no effect in SSC. This indicates a tolerance of SSC to higher concentrations of nitrogen constituting an advantage when using residual media with high levels of protein and wlriability in their composition. | Descripción: | 6 páginas, 4 figuras | Versión del editor: | http://dx.doi.org/10.1016/S0032-9592(98)80060-5 | URI: | http://hdl.handle.net/10261/58779 | DOI: | 10.1016/S0032-9592(98)80060-5 | ISSN: | 1359-5113 | E-ISSN: | 1873-3298 |
Aparece en las colecciones: | (IIM) Artículos |
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Monitoring_citric_Pintado.pdf | 44,29 kB | Adobe PDF | Visualizar/Abrir |
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