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The production, molecular weight and viscosifying power of alginate produced by Azotobacter vinelandii is affected by the carbon source in submerged cultures
dc.rights.license | Atribución-NoComercial 4.0 Internacional |
dc.contributor.author | Trujillo Roldán, Mauricio Alberto |
dc.contributor.author | Monsalve Gil, John Fredy |
dc.contributor.author | Cuesta Álvarez, Angélica Maria |
dc.contributor.author | Valdez Cruz, Norma Adriana |
dc.date.accessioned | 2019-07-02T18:42:52Z |
dc.date.available | 2019-07-02T18:42:52Z |
dc.date.issued | 2015-11-01 |
dc.identifier.issn | ISSN: 2346-2183 |
dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/60611 |
dc.description.abstract | Alginate is a linear polymer composed of b-1,4 linked mannuronic acid and its epimer, a-L-guluronic acid, and frequently extracted from marine algae, as from bacteria such as Azotobacter and Pseudomonas. Here, we show the impact of conventional and unconventional carbon sources on A. vinelandii growth, alginate production, its mean molecular weight (MMW) and its viscosifying power. Starting with 20 g/L of sugars, the highest biomass concentration was obtained using deproteinized and hydrolyzed whey (6.67±0.72 g/L), and sugarcane juice (6.68±0.45 g/L). However, the maximum alginate production was achieved using sucrose (5.11±0.37 g/L), as well the highest alginate yield and specific productivity. Otherwise, the higher alginate MMW was obtained using sugarcane juice (1203±120 kDa), and the higher viscosifying power was obtained using deproteinized/ hydrolyzed whey (23.8±2.6 cps L/galg). This information suggests that it is possible to manipulate the productivity and molecular characteristics of alginates, as a function of the carbon source used. All this, together with the knowledge of the effects of environmental conditions will allow for high yields of high added value biopolymers. |
dc.format.mimetype | application/pdf |
dc.language.iso | spa |
dc.publisher | Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas. |
dc.relation | https://revistas.unal.edu.co/index.php/dyna/article/view/44201 |
dc.relation.ispartof | Universidad Nacional de Colombia Revistas electrónicas UN Dyna |
dc.relation.ispartof | Dyna |
dc.rights | Derechos reservados - Universidad Nacional de Colombia |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ |
dc.subject.ddc | 62 Ingeniería y operaciones afines / Engineering |
dc.title | The production, molecular weight and viscosifying power of alginate produced by Azotobacter vinelandii is affected by the carbon source in submerged cultures |
dc.type | Artículo de revista |
dc.type.driver | info:eu-repo/semantics/article |
dc.type.version | info:eu-repo/semantics/publishedVersion |
dc.identifier.eprints | http://bdigital.unal.edu.co/58943/ |
dc.relation.references | Trujillo Roldán, Mauricio Alberto and Monsalve Gil, John Fredy and Cuesta Álvarez, Angélica Maria and Valdez Cruz, Norma Adriana (2015) The production, molecular weight and viscosifying power of alginate produced by Azotobacter vinelandii is affected by the carbon source in submerged cultures. DYNA, 82 (194). pp. 21-26. ISSN 2346-2183 |
dc.rights.accessrights | info:eu-repo/semantics/openAccess |
dc.subject.proposal | alginates |
dc.subject.proposal | Azotobacter vinelandii |
dc.subject.proposal | viscosifying power |
dc.subject.proposal | unconventional carbon sources |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 |
dc.type.coarversion | http://purl.org/coar/version/c_970fb48d4fbd8a85 |
dc.type.content | Text |
dc.type.redcol | http://purl.org/redcol/resource_type/ART |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 |
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