Publicación: Obtención de dextrinas de alta solubilidad en frio y mínima retrogradación a partir de almidón industrial de yuca
| dc.contributor.advisor | Daza Espinosa, Martha Cecilia | |
| dc.contributor.advisor | Molina Velasco, Daniel Ricardo | |
| dc.contributor.author | Carrascal Delgado, Fabian Alfredo | |
| dc.date.accessioned | 2024-03-03T16:15:05Z | |
| dc.date.available | 2006 | |
| dc.date.available | 2024-03-03T16:15:05Z | |
| dc.date.created | 2006 | |
| dc.date.issued | 2006 | |
| dc.description.abstract | Las dextrinas son almidones modificados que pueden obtenerse por tratamiento físico, químico o enzimático y que tienen un mayor valor económico que el almidón nativo. Las dextrinas tienen un peso molecular menor que el del almidón nativo, son hidrosolubles y se emplean principalmente en la fabricación de adhesivos debido a su baja viscosidad y a sus propiedades adhesivas. Las dextrinas pueden retrogradar, es decir re-organizarse en nuevos estados agregados en los que su solubilidad y sus propiedades adhesivas disminuyen. En esta tesis de pre-grado en Química, se determinaron las variables más relevantes, a escala de laboratorio, en la obtención enzimática de dextrinas de baja retrogradación a partir de almidón industrial de yuca usando como catalizador, la enzima -amilasa (Alfa-1,4-D-glucano glucanohidrolasa, (EC. 3.2.1.1.)). Los | |
| dc.description.abstractenglish | The dextrins are modified starches that they can be obtained by physical, chemical or enzymatic treatment and that they have a bigger economic value that the native starch. The dextrins has a smaller molecular weight that that of the native starch, they are hidrosolubles and they are used mainly in the production of adhesives due to their low viscosity and to their adhesive properties. The dextrins can retrograde, that is to say re-organizarse in new states added in those that their solubility and their adhesive properties diminish. In this pre-degree thesis in Chemistry, the most excellent variables were determined, to laboratory scale, in the enzymatic obtaining of dextrins of low retrogradation starting from industrial starch of yucca using as catalyst, the enzyme -amilasa (Alpha-1,4-D-glucan glucanhydrolase, (EC. 3.2.1.1.)). The experiments were carried out using like reference the pH values = 4,7, temperature 55ºC and concentration of starch [s] and of enzyme [E], mentioned in the thesis of Sánchez, A. (2002); and value for the variable time (t) among 5 to 40 minutes. The influence of the variables [s], [E] and (t) on the dextrins production it was evaluated by means of a factorial design 23 (sifted) with two replicas. The obtained results show that: to) The most excellent variables in the production dextrins starting from industrial starch of yucca, hydrolisated for the enzyme -amilase they are the [s], and the (t); b) The maximum yield of dextrins production went from the 92,5 to 94,5% p/v with [s] between 6,00 and 6,37% p/v, [E] of 1,75*10-3% p/v, and (t) among 10 to 17 minutes, temperature of 55°C and pH of 4,7; c) The obtained dextrins, stored at 25°C doesn't retrograde before 12 days; and d) The obtained dextrins , stored to inferior temperatures at 8°C retrogrades before 2 hours. | |
| dc.description.degreelevel | Pregrado | |
| dc.description.degreename | Químico | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.instname | Universidad Industrial de Santander | |
| dc.identifier.reponame | Universidad Industrial de Santander | |
| dc.identifier.repourl | https://noesis.uis.edu.co | |
| dc.identifier.uri | https://noesis.uis.edu.co/handle/20.500.14071/19271 | |
| dc.language.iso | spa | |
| dc.publisher | Universidad Industrial de Santander | |
| dc.publisher.faculty | Facultad de Ciencias | |
| dc.publisher.program | Química | |
| dc.publisher.school | Escuela de Química | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights.accessrights | info:eu-repo/semantics/openAccess | |
| dc.rights.creativecommons | Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) | |
| dc.rights.license | Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0 | |
| dc.subject | Dextrinas | |
| dc.subject | Almidón | |
| dc.subject | Hidrólisis | |
| dc.subject | Amilasas | |
| dc.subject.keyword | Dextrins | |
| dc.subject.keyword | Starch | |
| dc.subject.keyword | Hidrolysis | |
| dc.subject.keyword | Amilases | |
| dc.title | Obtención de dextrinas de alta solubilidad en frio y mínima retrogradación a partir de almidón industrial de yuca | |
| dc.title.english | Obtaining of dextrins of high solubility and minimum retrogradation from industrial starch of yucca | |
| dc.type.coar | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |
| dc.type.hasversion | http://purl.org/coar/resource_type/c_7a1f | |
| dc.type.local | Tesis/Trabajo de grado - Monografía - Pregrado | |
| dspace.entity.type | Publication |