Mechanical properties of calcium alginate fibers produced with a microfluidic device

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dc.contributor.authorCuadros, Teresa R.
dc.contributor.authorSkurtys, Olivier
dc.contributor.authorAguilera, Jose M.
dc.date.accessioned2024-01-10T12:40:16Z
dc.date.available2024-01-10T12:40:16Z
dc.date.issued2012
dc.description.abstractFibers are important microstructural elements in many foods. The main objective of this research was to produce calcium alginate fibers with uniform diameters (about 300 and 550 mu m) using a microfluidic device (MFD) and to study the effect of concentration of sodium alginate [Alg] and calcium chloride [CaCl2] on their mechanical properties (MP). Moisture content (MO) and MP as maximum tensile stress (sigma(max)), tensile strain at break (Delta L/L-0) and apparent Young's modulus (E) of fibers were determined and a statistical model and surface responses were developed as a function of [Alg] and [CaCl2]. As [CaCl2] increased first a strengthening and then a weakening of fibers were observed. Furthermore, sigma(max) increased with the addition of Ca2+ and a maximum of sigma(max) was obtained for a [CaCl2] around 1.4% (exceeding several times the stoichiometric requirements of the carboxylate groups of the polymer). Such behavior prompted a molecular explanation of what happens during gelation based on the "egg-box model" and this model is tried to complete. Moreover, fibers with [Alg] >= 1.8% showed high extensibility (Delta L/L-0 around 100%) and low values of MO. High values of E (similar to 0.5 MPa) were obtained for [CaCl2] close to 1.4%. A greater understanding is needed of the interaction between cation-polysaccharide-water, taking into account [Alg] and [CaCl2] to predict the mechanical behavior of fibers. Calcium alginate fibers are important in food engineering as texture and microencapsulation agents. (C) 2012 Elsevier Ltd. All rights reserved.
dc.description.funderCONICYT (Comision Nacional de Investigacion Cientifica y Tecnologica)
dc.description.funderFONDECYT
dc.fechaingreso.objetodigital21-03-2024
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.carbpol.2012.03.094
dc.identifier.eissn1879-1344
dc.identifier.issn0144-8617
dc.identifier.pubmedidMEDLINE:24750932
dc.identifier.urihttps://doi.org/10.1016/j.carbpol.2012.03.094
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77290
dc.identifier.wosidWOS:000305593900028
dc.information.autorucIngeniería;Aguilera J;S/I;99054
dc.information.autorucIngeniería;Cuadros T;S/I;96951
dc.issue.numero4
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1206
dc.pagina.inicio1198
dc.publisherELSEVIER SCI LTD
dc.revistaCARBOHYDRATE POLYMERS
dc.rightsacceso restringido
dc.subjectAlginate gel
dc.subjectDiffusion
dc.subjectMechanical properties
dc.subjectMicrofluidic
dc.subjectFibers
dc.subjectEggs-box model
dc.subjectPHYSICAL-PROPERTIES
dc.subjectGELATIN SOLUTIONS
dc.subjectSODIUM ALGINATE
dc.subjectGELS
dc.subjectBUBBLES
dc.subjectFOAMS
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleMechanical properties of calcium alginate fibers produced with a microfluidic device
dc.typeartículo
dc.volumen89
sipa.codpersvinculados99054
sipa.codpersvinculados96951
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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