Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region

Autores
Beverina, Mariana; Sanchez Cortes, S.; Schabes, F .I.; Zapata Martínez, José Enrique; Arias Cassará, María Lucrecia; Tuttolomondo, María Eugenia
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work we present the Fourier-transform infrared (FTIR) and Raman spectra of Aloe maculata (A.maculata)(“maculata” = with spots) gel after elimination of the aloin fraction. The analyzed samples were harvested from two zones of different heights in northern Argentina. From the FTIR measurements it was possible to identify the presence of pectin in the gel, where an analysis of the degree of esterification was done on the basis of characteristic marker bands for the different aloe samples. The effect of the storage time of both samples was also monitored revealing that the degree of esterification undergoes a decrease upon the storage time in all samples. By this way, it was determined that the samples of A. maculata collected from the high lands, present a higher esterification degree in pectins than those collected from the low lands. In order to better follow the distribution of the different spectral signals, we performed a Raman mapping in a selected area. The Raman measurements helped to determine the characteristics of the different fibers of the Aloe gel. Furthermore, theoretical calculations carried out on a molecular model of one important aloe gel component, the acemannan, aided in the assignment of the modes of the groups present in the gel samples. This investigation is important in order to assess the influence of the harvesting place and the storage time on the use and commercialization of the aloe products, since a higher degree of esterification gives rise to a higher viscosity and, consequently, a better bioavailability.
Fil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Sanchez Cortes, S.. Consejo Superior de Investigaciones Científicas; España
Fil: Schabes, F .I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Zapata Martínez, José Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Materia
ALOE MACULATA
INFRARED SPECTROSCOPY
RAMAN SPECTROSCOPY, ESTERIFICATION DEGREE, RAMAN MAPPING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/224224
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/224224
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina regionBeverina, MarianaSanchez Cortes, S.Schabes, F .I.Zapata Martínez, José EnriqueArias Cassará, María LucreciaTuttolomondo, María EugeniaALOE MACULATAINFRARED SPECTROSCOPYRAMAN SPECTROSCOPY, ESTERIFICATION DEGREE, RAMAN MAPPINGhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this work we present the Fourier-transform infrared (FTIR) and Raman spectra of Aloe maculata (A.maculata)(“maculata” = with spots) gel after elimination of the aloin fraction. The analyzed samples were harvested from two zones of different heights in northern Argentina. From the FTIR measurements it was possible to identify the presence of pectin in the gel, where an analysis of the degree of esterification was done on the basis of characteristic marker bands for the different aloe samples. The effect of the storage time of both samples was also monitored revealing that the degree of esterification undergoes a decrease upon the storage time in all samples. By this way, it was determined that the samples of A. maculata collected from the high lands, present a higher esterification degree in pectins than those collected from the low lands. In order to better follow the distribution of the different spectral signals, we performed a Raman mapping in a selected area. The Raman measurements helped to determine the characteristics of the different fibers of the Aloe gel. Furthermore, theoretical calculations carried out on a molecular model of one important aloe gel component, the acemannan, aided in the assignment of the modes of the groups present in the gel samples. This investigation is important in order to assess the influence of the harvesting place and the storage time on the use and commercialization of the aloe products, since a higher degree of esterification gives rise to a higher viscosity and, consequently, a better bioavailability.Fil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Sanchez Cortes, S.. Consejo Superior de Investigaciones Científicas; EspañaFil: Schabes, F .I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Zapata Martínez, José Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaElsevier Science2022-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/224224Beverina, Mariana; Sanchez Cortes, S.; Schabes, F .I.; Zapata Martínez, José Enrique; Arias Cassará, María Lucrecia; et al.; Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region; Elsevier Science; Vibrational Spectroscopy; 122; 9-2022; 1-90924-2031CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1016/j.vibspec.2022.103423info:eu-repo/semantics/altIdentifier/doi/10.1016/j.vibspec.2022.103423info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:11:35Zoai:ri.conicet.gov.ar:11336/224224instacron: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:34982025-10-22 12:11:36.163CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
title Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
spellingShingle Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
Beverina, Mariana
ALOE MACULATA
INFRARED SPECTROSCOPY
RAMAN SPECTROSCOPY, ESTERIFICATION DEGREE, RAMAN MAPPING
title_short Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
title_full Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
title_fullStr Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
title_full_unstemmed Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
title_sort Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region
dc.creator.none.fl_str_mv Beverina, Mariana
Sanchez Cortes, S.
Schabes, F .I.
Zapata Martínez, José Enrique
Arias Cassará, María Lucrecia
Tuttolomondo, María Eugenia
author Beverina, Mariana
author_facet Beverina, Mariana
Sanchez Cortes, S.
Schabes, F .I.
Zapata Martínez, José Enrique
Arias Cassará, María Lucrecia
Tuttolomondo, María Eugenia
author_role author
author2 Sanchez Cortes, S.
Schabes, F .I.
Zapata Martínez, José Enrique
Arias Cassará, María Lucrecia
Tuttolomondo, María Eugenia
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ALOE MACULATA
INFRARED SPECTROSCOPY
RAMAN SPECTROSCOPY, ESTERIFICATION DEGREE, RAMAN MAPPING
topic ALOE MACULATA
INFRARED SPECTROSCOPY
RAMAN SPECTROSCOPY, ESTERIFICATION DEGREE, RAMAN MAPPING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work we present the Fourier-transform infrared (FTIR) and Raman spectra of Aloe maculata (A.maculata)(“maculata” = with spots) gel after elimination of the aloin fraction. The analyzed samples were harvested from two zones of different heights in northern Argentina. From the FTIR measurements it was possible to identify the presence of pectin in the gel, where an analysis of the degree of esterification was done on the basis of characteristic marker bands for the different aloe samples. The effect of the storage time of both samples was also monitored revealing that the degree of esterification undergoes a decrease upon the storage time in all samples. By this way, it was determined that the samples of A. maculata collected from the high lands, present a higher esterification degree in pectins than those collected from the low lands. In order to better follow the distribution of the different spectral signals, we performed a Raman mapping in a selected area. The Raman measurements helped to determine the characteristics of the different fibers of the Aloe gel. Furthermore, theoretical calculations carried out on a molecular model of one important aloe gel component, the acemannan, aided in the assignment of the modes of the groups present in the gel samples. This investigation is important in order to assess the influence of the harvesting place and the storage time on the use and commercialization of the aloe products, since a higher degree of esterification gives rise to a higher viscosity and, consequently, a better bioavailability.
Fil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Sanchez Cortes, S.. Consejo Superior de Investigaciones Científicas; España
Fil: Schabes, F .I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Zapata Martínez, José Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
description In this work we present the Fourier-transform infrared (FTIR) and Raman spectra of Aloe maculata (A.maculata)(“maculata” = with spots) gel after elimination of the aloin fraction. The analyzed samples were harvested from two zones of different heights in northern Argentina. From the FTIR measurements it was possible to identify the presence of pectin in the gel, where an analysis of the degree of esterification was done on the basis of characteristic marker bands for the different aloe samples. The effect of the storage time of both samples was also monitored revealing that the degree of esterification undergoes a decrease upon the storage time in all samples. By this way, it was determined that the samples of A. maculata collected from the high lands, present a higher esterification degree in pectins than those collected from the low lands. In order to better follow the distribution of the different spectral signals, we performed a Raman mapping in a selected area. The Raman measurements helped to determine the characteristics of the different fibers of the Aloe gel. Furthermore, theoretical calculations carried out on a molecular model of one important aloe gel component, the acemannan, aided in the assignment of the modes of the groups present in the gel samples. This investigation is important in order to assess the influence of the harvesting place and the storage time on the use and commercialization of the aloe products, since a higher degree of esterification gives rise to a higher viscosity and, consequently, a better bioavailability.
publishDate 2022
dc.date.none.fl_str_mv 2022-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/224224
Beverina, Mariana; Sanchez Cortes, S.; Schabes, F .I.; Zapata Martínez, José Enrique; Arias Cassará, María Lucrecia; et al.; Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region; Elsevier Science; Vibrational Spectroscopy; 122; 9-2022; 1-9
0924-2031
CONICET Digital
CONICET
url http://hdl.handle.net/11336/224224
identifier_str_mv Beverina, Mariana; Sanchez Cortes, S.; Schabes, F .I.; Zapata Martínez, José Enrique; Arias Cassará, María Lucrecia; et al.; Spectroscopic characterization (Raman and infrared) of Aloe maculata from the north Argentina region; Elsevier Science; Vibrational Spectroscopy; 122; 9-2022; 1-9
0924-2031
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://doi.org/10.1016/j.vibspec.2022.103423
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.vibspec.2022.103423
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
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score 12.982451

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