Fracture properties and microstructure of low-moisture starch probes

Simple item page
dc.contributor.authorCastro, L.
dc.contributor.authorAguilera, J. M.
dc.date.accessioned2024-01-10T12:05:34Z
dc.date.available2024-01-10T12:05:34Z
dc.date.issued2007
dc.description.abstractDifferent microstructures were induced in thin rectangular sheets of a pregelatinized starch gel by drying in an air oven at 5 different temperatures (range 65-105 degrees C) and by freeze drying. As drying temperature increased, air-dried probes (ADP) varied from thin, dense, and transparent to thick, cellular, and translucent, and the presence of larger air cells became more evident. Freeze-dried probes (FDP) were porous, white, and exhibited minimal shrinkage. Most samples exhibited a brittle-type fracture pattern in the range 0.0 < a(w) < 0.75. FDP had much higher fracture force (FF, three-point bending test) than ADP. FF increased sharply between a, 0.44 and 0.65 for ADP but not for FDP. Light and environmental electron scanning microscopy (ESEM) were used to study the morphology and microstructure of dried probes (thickness and air cells). This work suggests that drying conditions and the microstructural features derived thereof have a larger influence on fracture properties of the starchy material than the glass transition temperature.
dc.fechaingreso.objetodigital2024-05-08
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1080/07373930601160981
dc.identifier.eissn1532-2300
dc.identifier.issn0737-3937
dc.identifier.urihttps://doi.org/10.1080/07373930601160981
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76032
dc.identifier.wosidWOS:000245315200021
dc.information.autorucIngeniería;Aguilera J;S/I;99054
dc.issue.numero1-3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final152
dc.pagina.inicio147
dc.publisherTAYLOR & FRANCIS INC
dc.revistaDRYING TECHNOLOGY
dc.rightsacceso restringido
dc.subjectair cells
dc.subjectdrying
dc.subjectfracture
dc.subjectglass transition
dc.subjectmicrostructure
dc.subjectstarch
dc.subjectwater activity
dc.subjectGLASS-TRANSITION
dc.subjectCRISPNESS
dc.subjectCRACK
dc.subjectSHRINKAGE
dc.subjectMODEL
dc.subject.ods02 Zero Hunger
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa02 Hambre cero
dc.subject.odspa03 Salud y bienestar
dc.titleFracture properties and microstructure of low-moisture starch probes
dc.typeartículo
dc.volumen25
sipa.codpersvinculados99054
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2024-05-08. Fracture properties and microstructure of low-moisture starch probes.pdf
Size:
2.72 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas