Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins

Two types of inulins of different composition were investigated in the glassy and in the crystalline states, at relative humidities within 11 and 97%. The melting and glass transition temperatures (Tm, Tg), and their crystallinity indexes (CI) were determined by modulated differential-scanning calor...

Descripción completa

Detalles Bibliográficos
Autores principales:	Romano, Nelson Gastón, Araujo Andrade, Cuauhtémoc, Lecot, Carlos Javier, Mobili, Pablo, Gómez-Zavaglia, Andrea
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2018
Materias:	Química Inulin Infrared spectroscopy Multivariate analysis Amorphous and crystalline states Melting temperature X-ray diffraction Differential scanning calorimetry
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/87101
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-87101
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Química Inulin Infrared spectroscopy Multivariate analysis Amorphous and crystalline states Melting temperature X-ray diffraction Differential scanning calorimetry
spellingShingle	Química Inulin Infrared spectroscopy Multivariate analysis Amorphous and crystalline states Melting temperature X-ray diffraction Differential scanning calorimetry Romano, Nelson Gastón Araujo Andrade, Cuauhtémoc Lecot, Carlos Javier Mobili, Pablo Gómez-Zavaglia, Andrea Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
topic_facet	Química Inulin Infrared spectroscopy Multivariate analysis Amorphous and crystalline states Melting temperature X-ray diffraction Differential scanning calorimetry
description	Two types of inulins of different composition were investigated in the glassy and in the crystalline states, at relative humidities within 11 and 97%. The melting and glass transition temperatures (Tm, Tg), and their crystallinity indexes (CI) were determined by modulated differential-scanning calorimetry (MDSC) and wide-angle X-ray scattering (WAXS), respectively. In parallel assays, Fourier transform-infrared spectroscopy (FTIR) coupled to principal component analysis (PCA) enabled a physical-chemical and structural characterization of samples, explaining 90% of the total variance. Finally, partial least square (PLS) models were defined to determine Tg, Tm, and CI directly from the FTIR spectra, using the MDSC and WAXS results as reference methods. In all cases, the mean of predicted values fitted very well those of the reference methods (R2 > 0.961), thus supporting the use of the PLS models to investigate unknown samples. The robustness of the models underlines the usefulness of FTIR to easily determine physical-chemical parameters, otherwise requiring complex preparation of samples and prolonged times of analysis.
format	Articulo Articulo
author	Romano, Nelson Gastón Araujo Andrade, Cuauhtémoc Lecot, Carlos Javier Mobili, Pablo Gómez-Zavaglia, Andrea
author_facet	Romano, Nelson Gastón Araujo Andrade, Cuauhtémoc Lecot, Carlos Javier Mobili, Pablo Gómez-Zavaglia, Andrea
author_sort	Romano, Nelson Gastón
title	Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
title_short	Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
title_full	Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
title_fullStr	Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
title_full_unstemmed	Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
title_sort	infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/87101
work_keys_str_mv	AT romanonelsongaston infraredspectroscopyasanalternativemethodologytoevaluatetheeffectofstructuralfeaturesonthephysicalchemicalpropertiesofinulins AT araujoandradecuauhtemoc infraredspectroscopyasanalternativemethodologytoevaluatetheeffectofstructuralfeaturesonthephysicalchemicalpropertiesofinulins AT lecotcarlosjavier infraredspectroscopyasanalternativemethodologytoevaluatetheeffectofstructuralfeaturesonthephysicalchemicalpropertiesofinulins AT mobilipablo infraredspectroscopyasanalternativemethodologytoevaluatetheeffectofstructuralfeaturesonthephysicalchemicalpropertiesofinulins AT gomezzavagliaandrea infraredspectroscopyasanalternativemethodologytoevaluatetheeffectofstructuralfeaturesonthephysicalchemicalpropertiesofinulins
bdutipo_str	Repositorios
_version_	1764820489638772739

Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins

Ejemplares similares