The present study was conducted to evaluate the cellulose production by Gluconacetobacter kakiaceti GM5 by means of two aerobic treatments: the static discontinuous fermentation process (treatment 1) and the discontinuous fermentation process in a rotary shaker (treatment 2). All these experiments were carried out using vinasse as experimental culture media (VM) and were compared with standard media containing glucose at 2% (standard medium (SM)). A sample of each treatment was extracted every 24 h over a period of 168 h. The maximum rates of cellulose produced in treatment 1 using SM added up to 3.63 ± 0.18 g l−1, and to 4.15 ± 0.16 g l−1 when VM was used. The amount of cellulose produced in treatment 2 using SM was 2.95 ± 0.09 g l−1 (which suggests an increase of 37%), and added up to 1.84 ± 0.07 g l−1 when using VM. A better global yield of both treatments in terms of sugar consumption after 168 h was obtained when using VM: 32% in treatment 1, whereas in treatment 2 it was 9%. A 20% decrease on vinasse COD (Chemical Oxygen Demand) values was found to be yet another important advantage of working with this strain.
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Research Article|
September 01 2013
Cellulose production by Gluconacetobacter kakiaceti GM5 in two batch process using vinasse as culture media
Möritz Velásquez-Riaño;
1Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ª N° 43-82, Bogotá, Colombia
2Escuela de Microbiología, Universidad de Antioquia, Calle 67 No. 53–108, Bloque 5, Medellín, Colombia
E-mail: [email protected]
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Nelson Lombana-Sánchez;
Nelson Lombana-Sánchez
1Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ª N° 43-82, Bogotá, Colombia
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Andrés Felipe Villa-Restrepo;
Andrés Felipe Villa-Restrepo
2Escuela de Microbiología, Universidad de Antioquia, Calle 67 No. 53–108, Bloque 5, Medellín, Colombia
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Erika Pamela Fernández-Calle
Erika Pamela Fernández-Calle
3Instituto de Biología, Universidad de Antioquia, Calle 67 No. 53–108, Bloque 7, Medellín, Colombia
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Water Sci Technol (2013) 68 (5): 1079–1084.
Article history
Received:
April 08 2012
Accepted:
April 22 2013
Citation
Möritz Velásquez-Riaño, Nelson Lombana-Sánchez, Andrés Felipe Villa-Restrepo, Erika Pamela Fernández-Calle; Cellulose production by Gluconacetobacter kakiaceti GM5 in two batch process using vinasse as culture media. Water Sci Technol 1 September 2013; 68 (5): 1079–1084. doi: https://doi.org/10.2166/wst.2013.347
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