Use of volatile fatty acids salts in the production of xanthan gum
Background: The aim of this study was the production of xanthan gum from salts of volatile fatty acids, which can be generated in anaerobic processes for the production of hydrogen from organic wastewaters. Xanthan gum was produced with three different acid salts used to replace the traditional citr...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Lenguaje: | English |
| Publicado: |
Pontificia Universidad Católica de Valparaíso
2013
|
| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200006 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:scielo:S0717-34582013000200006 |
|---|---|
| record_format |
dspace |
| spelling |
oai:scielo:S0717-345820130002000062013-03-27Use of volatile fatty acids salts in the production of xanthan gumCorrea Leite,José AlbertoPozzi,EloizaPelizer,Lúcia HelenaZaiat,MarceloBarboza,Marlei rheology volatile fatty acids xanthan gum Background: The aim of this study was the production of xanthan gum from salts of volatile fatty acids, which can be generated in anaerobic processes for the production of hydrogen from organic wastewaters. Xanthan gum was produced with three different acid salts used to replace the traditional citrate, which is normally used in the culture for the production of this biopolymer. The volatile fatty acids (VFA) salts used were sodium acetate 0.0328 M, sodium propionate 0.0219 M, and sodium butyrate 0.0164 M. Results: The values of biomass yield, (Yp/x) obtained were 9.2 g/g for acetate, 11.78 g/g for citrate, 11.80 g/g for butyrate and 14.59 g/g for propionate, while the values of the product yield (Yp/s), were 0.92; 0.59; 0.71 and 0.72 for acetate, citrate, butyrate and propionate. As for the rheological characterization, the gums produced showed a consistency index (K) and flow index (n) of 9.8 dina.s-n.cm-2 and 0.34 for acetate; 6.3 dina.s-n.cm-2 and 0.39 for citrate, 5.8 dina.s-n.cm-2 and 0.45 for butyrate, 39.2 dina.s-n.cm-2 and 0.24 for propionate, that characterize the gums with good consistency and fluidity. Conclusions: It is possible to produce xanthan gum from short-chain volatile acids in replacement by the citrate that is usually used in medium composition for the gum production. These results contribute to the feasibility studies for implementation of processes for treating wastewater generating products such as volatile acids, hydrogen and consequent use of these acids for the production of xanthan gum.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.16 n.2 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200006en10.2225/vol16-issue2-fulltext-6 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
rheology volatile fatty acids xanthan gum |
| spellingShingle |
rheology volatile fatty acids xanthan gum Correa Leite,José Alberto Pozzi,Eloiza Pelizer,Lúcia Helena Zaiat,Marcelo Barboza,Marlei Use of volatile fatty acids salts in the production of xanthan gum |
| description |
Background: The aim of this study was the production of xanthan gum from salts of volatile fatty acids, which can be generated in anaerobic processes for the production of hydrogen from organic wastewaters. Xanthan gum was produced with three different acid salts used to replace the traditional citrate, which is normally used in the culture for the production of this biopolymer. The volatile fatty acids (VFA) salts used were sodium acetate 0.0328 M, sodium propionate 0.0219 M, and sodium butyrate 0.0164 M. Results: The values of biomass yield, (Yp/x) obtained were 9.2 g/g for acetate, 11.78 g/g for citrate, 11.80 g/g for butyrate and 14.59 g/g for propionate, while the values of the product yield (Yp/s), were 0.92; 0.59; 0.71 and 0.72 for acetate, citrate, butyrate and propionate. As for the rheological characterization, the gums produced showed a consistency index (K) and flow index (n) of 9.8 dina.s-n.cm-2 and 0.34 for acetate; 6.3 dina.s-n.cm-2 and 0.39 for citrate, 5.8 dina.s-n.cm-2 and 0.45 for butyrate, 39.2 dina.s-n.cm-2 and 0.24 for propionate, that characterize the gums with good consistency and fluidity. Conclusions: It is possible to produce xanthan gum from short-chain volatile acids in replacement by the citrate that is usually used in medium composition for the gum production. These results contribute to the feasibility studies for implementation of processes for treating wastewater generating products such as volatile acids, hydrogen and consequent use of these acids for the production of xanthan gum. |
| author |
Correa Leite,José Alberto Pozzi,Eloiza Pelizer,Lúcia Helena Zaiat,Marcelo Barboza,Marlei |
| author_facet |
Correa Leite,José Alberto Pozzi,Eloiza Pelizer,Lúcia Helena Zaiat,Marcelo Barboza,Marlei |
| author_sort |
Correa Leite,José Alberto |
| title |
Use of volatile fatty acids salts in the production of xanthan gum |
| title_short |
Use of volatile fatty acids salts in the production of xanthan gum |
| title_full |
Use of volatile fatty acids salts in the production of xanthan gum |
| title_fullStr |
Use of volatile fatty acids salts in the production of xanthan gum |
| title_full_unstemmed |
Use of volatile fatty acids salts in the production of xanthan gum |
| title_sort |
use of volatile fatty acids salts in the production of xanthan gum |
| publisher |
Pontificia Universidad Católica de Valparaíso |
| publishDate |
2013 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200006 |
| work_keys_str_mv |
AT correaleitejosealberto useofvolatilefattyacidssaltsintheproductionofxanthangum AT pozzieloiza useofvolatilefattyacidssaltsintheproductionofxanthangum AT pelizerluciahelena useofvolatilefattyacidssaltsintheproductionofxanthangum AT zaiatmarcelo useofvolatilefattyacidssaltsintheproductionofxanthangum AT barbozamarlei useofvolatilefattyacidssaltsintheproductionofxanthangum |
| _version_ |
1718441870572388352 |