A microstructure-level study of monoglycerides oleogels using rheomicroscopy

Autores
Palla, Camila Andrea; Carrin, Maria Elena; de Vicente, Juan; Galvéz Ruiz, María José
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Monoglycerides oleogels are semisolid systems containing self-assembled structures formed by crystalline material entrapping liquid oil in a three-dimensional network. The microstructure of the network of these oleogels determines their macroscopic functionality. Interestingly, these oleogels can be tailored by modifying the preparation conditions and, in particular, the cooling rate.In this work, the effect of the cooling temperature profile (CTP) employed in the production of oleogels from monoglycerides and high oleic sunflower oil was investigated using a torsional rheometer equipped with a polarized optical microscope. This technique allows simultaneously carrying out rheological measurements and recording images of the internal structures of the gels during the gelation process. With this, it becomes also possible to obtain microstructural parameters such as the Avrami index that allows us to determine the dimensionality of the crystal growth process. Once the gelation processed finished, the microstructure of the oleogels was also analyzed by confocal and optical microscopy. Micrographs were processed and analyzed using ImageJ software in order to estimate the fractions of solid crystalline and oil, and to determine the network characteristics such as the crystal length and shape, and the box-counting fractal dimension. Micrographs obtained using these three complementary microscopic techniques revealed a strong consistency. Generally speaking, monoglycerides crystal aggregates distribute in irregular, elongated, fibrillar or needle-like shape. The analysis of the distribution of crystal sizes resulted in very similar median values, D50, which rose with the increase of the CTP. The highest CTP allowed to obtain oleogels with the highest elastic modulus, a fractal dimension close to 2 and a solid crystalline fraction of about 0.15.
Fil: Palla, Camila Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Carrin, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: de Vicente, Juan. Universidad de Granada; España
Fil: Galvéz Ruiz, María José. Universidad de Granada; España
17th Latin American Congress and Exhibition on Fats,Oils, and Lipids
Cancún
México
The American Oil Chemists' Society
Materia
OLEOGELS
RHEOMICROSCOPY
MICROSTRUCTURE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/156444
Acceder
id CONICETDig_57300b527207fdf5269804245d654f4a
oai_identifier_str oai:ri.conicet.gov.ar:11336/156444
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A microstructure-level study of monoglycerides oleogels using rheomicroscopyPalla, Camila AndreaCarrin, Maria Elenade Vicente, JuanGalvéz Ruiz, María JoséOLEOGELSRHEOMICROSCOPYMICROSTRUCTUREhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2Monoglycerides oleogels are semisolid systems containing self-assembled structures formed by crystalline material entrapping liquid oil in a three-dimensional network. The microstructure of the network of these oleogels determines their macroscopic functionality. Interestingly, these oleogels can be tailored by modifying the preparation conditions and, in particular, the cooling rate.In this work, the effect of the cooling temperature profile (CTP) employed in the production of oleogels from monoglycerides and high oleic sunflower oil was investigated using a torsional rheometer equipped with a polarized optical microscope. This technique allows simultaneously carrying out rheological measurements and recording images of the internal structures of the gels during the gelation process. With this, it becomes also possible to obtain microstructural parameters such as the Avrami index that allows us to determine the dimensionality of the crystal growth process. Once the gelation processed finished, the microstructure of the oleogels was also analyzed by confocal and optical microscopy. Micrographs were processed and analyzed using ImageJ software in order to estimate the fractions of solid crystalline and oil, and to determine the network characteristics such as the crystal length and shape, and the box-counting fractal dimension. Micrographs obtained using these three complementary microscopic techniques revealed a strong consistency. Generally speaking, monoglycerides crystal aggregates distribute in irregular, elongated, fibrillar or needle-like shape. The analysis of the distribution of crystal sizes resulted in very similar median values, D50, which rose with the increase of the CTP. The highest CTP allowed to obtain oleogels with the highest elastic modulus, a fractal dimension close to 2 and a solid crystalline fraction of about 0.15.Fil: Palla, Camila Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Carrin, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: de Vicente, Juan. Universidad de Granada; EspañaFil: Galvéz Ruiz, María José. Universidad de Granada; España17th Latin American Congress and Exhibition on Fats,Oils, and LipidsCancúnMéxicoThe American Oil Chemists' SocietyThe American Oil Chemists' Society2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/156444A microstructure-level study of monoglycerides oleogels using rheomicroscopy; 17th Latin American Congress and Exhibition on Fats,Oils, and Lipids ; Cancún; México; 2017; 1-2CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aocs.org/attend-meetings/archives/17th-aocs-latin-american-congress-and-exhibition-on-fats-oils-and-lipidsinfo:eu-repo/semantics/altIdentifier/url/https://www.aocs.org/attend-meetings/archives/17th-aocs-latin-american-congress-and-exhibition-on-fats-oils-and-lipids?SSO=TrueInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:15Zoai:ri.conicet.gov.ar:11336/156444instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:53:15.974CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A microstructure-level study of monoglycerides oleogels using rheomicroscopy
title A microstructure-level study of monoglycerides oleogels using rheomicroscopy
spellingShingle A microstructure-level study of monoglycerides oleogels using rheomicroscopy
Palla, Camila Andrea
OLEOGELS
RHEOMICROSCOPY
MICROSTRUCTURE
title_short A microstructure-level study of monoglycerides oleogels using rheomicroscopy
title_full A microstructure-level study of monoglycerides oleogels using rheomicroscopy
title_fullStr A microstructure-level study of monoglycerides oleogels using rheomicroscopy
title_full_unstemmed A microstructure-level study of monoglycerides oleogels using rheomicroscopy
title_sort A microstructure-level study of monoglycerides oleogels using rheomicroscopy
dc.creator.none.fl_str_mv Palla, Camila Andrea
Carrin, Maria Elena
de Vicente, Juan
Galvéz Ruiz, María José
author Palla, Camila Andrea
author_facet Palla, Camila Andrea
Carrin, Maria Elena
de Vicente, Juan
Galvéz Ruiz, María José
author_role author
author2 Carrin, Maria Elena
de Vicente, Juan
Galvéz Ruiz, María José
author2_role author
author
author
dc.subject.none.fl_str_mv OLEOGELS
RHEOMICROSCOPY
MICROSTRUCTURE
topic OLEOGELS
RHEOMICROSCOPY
MICROSTRUCTURE
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Monoglycerides oleogels are semisolid systems containing self-assembled structures formed by crystalline material entrapping liquid oil in a three-dimensional network. The microstructure of the network of these oleogels determines their macroscopic functionality. Interestingly, these oleogels can be tailored by modifying the preparation conditions and, in particular, the cooling rate.In this work, the effect of the cooling temperature profile (CTP) employed in the production of oleogels from monoglycerides and high oleic sunflower oil was investigated using a torsional rheometer equipped with a polarized optical microscope. This technique allows simultaneously carrying out rheological measurements and recording images of the internal structures of the gels during the gelation process. With this, it becomes also possible to obtain microstructural parameters such as the Avrami index that allows us to determine the dimensionality of the crystal growth process. Once the gelation processed finished, the microstructure of the oleogels was also analyzed by confocal and optical microscopy. Micrographs were processed and analyzed using ImageJ software in order to estimate the fractions of solid crystalline and oil, and to determine the network characteristics such as the crystal length and shape, and the box-counting fractal dimension. Micrographs obtained using these three complementary microscopic techniques revealed a strong consistency. Generally speaking, monoglycerides crystal aggregates distribute in irregular, elongated, fibrillar or needle-like shape. The analysis of the distribution of crystal sizes resulted in very similar median values, D50, which rose with the increase of the CTP. The highest CTP allowed to obtain oleogels with the highest elastic modulus, a fractal dimension close to 2 and a solid crystalline fraction of about 0.15.
Fil: Palla, Camila Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Carrin, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: de Vicente, Juan. Universidad de Granada; España
Fil: Galvéz Ruiz, María José. Universidad de Granada; España
17th Latin American Congress and Exhibition on Fats,Oils, and Lipids
Cancún
México
The American Oil Chemists' Society
description Monoglycerides oleogels are semisolid systems containing self-assembled structures formed by crystalline material entrapping liquid oil in a three-dimensional network. The microstructure of the network of these oleogels determines their macroscopic functionality. Interestingly, these oleogels can be tailored by modifying the preparation conditions and, in particular, the cooling rate.In this work, the effect of the cooling temperature profile (CTP) employed in the production of oleogels from monoglycerides and high oleic sunflower oil was investigated using a torsional rheometer equipped with a polarized optical microscope. This technique allows simultaneously carrying out rheological measurements and recording images of the internal structures of the gels during the gelation process. With this, it becomes also possible to obtain microstructural parameters such as the Avrami index that allows us to determine the dimensionality of the crystal growth process. Once the gelation processed finished, the microstructure of the oleogels was also analyzed by confocal and optical microscopy. Micrographs were processed and analyzed using ImageJ software in order to estimate the fractions of solid crystalline and oil, and to determine the network characteristics such as the crystal length and shape, and the box-counting fractal dimension. Micrographs obtained using these three complementary microscopic techniques revealed a strong consistency. Generally speaking, monoglycerides crystal aggregates distribute in irregular, elongated, fibrillar or needle-like shape. The analysis of the distribution of crystal sizes resulted in very similar median values, D50, which rose with the increase of the CTP. The highest CTP allowed to obtain oleogels with the highest elastic modulus, a fractal dimension close to 2 and a solid crystalline fraction of about 0.15.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/156444
A microstructure-level study of monoglycerides oleogels using rheomicroscopy; 17th Latin American Congress and Exhibition on Fats,Oils, and Lipids ; Cancún; México; 2017; 1-2
CONICET Digital
CONICET
url http://hdl.handle.net/11336/156444
identifier_str_mv A microstructure-level study of monoglycerides oleogels using rheomicroscopy; 17th Latin American Congress and Exhibition on Fats,Oils, and Lipids ; Cancún; México; 2017; 1-2
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.aocs.org/attend-meetings/archives/17th-aocs-latin-american-congress-and-exhibition-on-fats-oils-and-lipids
info:eu-repo/semantics/altIdentifier/url/https://www.aocs.org/attend-meetings/archives/17th-aocs-latin-american-congress-and-exhibition-on-fats-oils-and-lipids?SSO=True
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv The American Oil Chemists' Society
publisher.none.fl_str_mv The American Oil Chemists' Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269212078243840
score 13.13397

Publicaciones similares