Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging
“Persian” walnut (Juglans Regia L.) is one of the most consumed tree nuts in the world. It is rich in several bioactive compounds, with polyunsaturated and monounsaturated fatty acids (PUFA and MUFA) appearing at high concentrations. Walnut consumption protects against cardiovascular, carcinogenic,...
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2021-09-01
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doaj-05cc13bc1f9540968d01857af4273e062021-09-09T11:40:41ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-09-011210.3389/fpls.2021.729880729880Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral ImagingJulio Nogales-Bueno0Julio Nogales-Bueno1Berta Baca-Bocanegra2José Miguel Hernández-Hierro3Raquel Garcia4João Mota Barroso5Francisco José Heredia6Ana Elisa Rato7MED – Mediterranean Institute for Agriculture, Environment and Development & Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Évora, PortugalFood Colour and Quality Laboratory, Facultad de Farmacia, Universidad de Sevilla, Sevilla, SpainDepartamento de Química Analítica, Facultad de Farmacia, Universidad de Sevilla, Sevilla, SpainFood Colour and Quality Laboratory, Facultad de Farmacia, Universidad de Sevilla, Sevilla, SpainMED – Mediterranean Institute for Agriculture, Environment and Development & Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Évora, PortugalMED – Mediterranean Institute for Agriculture, Environment and Development & Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Évora, PortugalFood Colour and Quality Laboratory, Facultad de Farmacia, Universidad de Sevilla, Sevilla, SpainMED – Mediterranean Institute for Agriculture, Environment and Development & Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Évora, Portugal“Persian” walnut (Juglans Regia L.) is one of the most consumed tree nuts in the world. It is rich in several bioactive compounds, with polyunsaturated and monounsaturated fatty acids (PUFA and MUFA) appearing at high concentrations. Walnut consumption protects against cardiovascular, carcinogenic, and neurological disorders. The fatty acid profile has usually been determined by gas chromatography, a reliable and robust tool, but also complex, polluting, and time consuming. In this study, near infrared hyperspectral imaging has been used for the screening of total fat, MUFA, PUFA, saturated, and individual fatty acids in walnuts. Five different walnuts varieties have been considered and modified partial least square (MPLS) regressions have been performed. The SEs of prediction (SEP) in external validation (ranged from 2.12% for PUFA to 13.08% for MUFA) suggest that hyperspectral imaging can be a reliable tool for controlling these parameters in a simple, non-destructive and environmentally friendly way.https://www.frontiersin.org/articles/10.3389/fpls.2021.729880/fullwalnuttotal fatfatty acidshyperspectral imagingnear infraredchemometrics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Julio Nogales-Bueno Julio Nogales-Bueno Berta Baca-Bocanegra José Miguel Hernández-Hierro Raquel Garcia João Mota Barroso Francisco José Heredia Ana Elisa Rato |
spellingShingle |
Julio Nogales-Bueno Julio Nogales-Bueno Berta Baca-Bocanegra José Miguel Hernández-Hierro Raquel Garcia João Mota Barroso Francisco José Heredia Ana Elisa Rato Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging Frontiers in Plant Science walnut total fat fatty acids hyperspectral imaging near infrared chemometrics |
author_facet |
Julio Nogales-Bueno Julio Nogales-Bueno Berta Baca-Bocanegra José Miguel Hernández-Hierro Raquel Garcia João Mota Barroso Francisco José Heredia Ana Elisa Rato |
author_sort |
Julio Nogales-Bueno |
title |
Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging |
title_short |
Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging |
title_full |
Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging |
title_fullStr |
Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging |
title_full_unstemmed |
Assessment of Total Fat and Fatty Acids in Walnuts Using Near-Infrared Hyperspectral Imaging |
title_sort |
assessment of total fat and fatty acids in walnuts using near-infrared hyperspectral imaging |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2021-09-01 |
description |
“Persian” walnut (Juglans Regia L.) is one of the most consumed tree nuts in the world. It is rich in several bioactive compounds, with polyunsaturated and monounsaturated fatty acids (PUFA and MUFA) appearing at high concentrations. Walnut consumption protects against cardiovascular, carcinogenic, and neurological disorders. The fatty acid profile has usually been determined by gas chromatography, a reliable and robust tool, but also complex, polluting, and time consuming. In this study, near infrared hyperspectral imaging has been used for the screening of total fat, MUFA, PUFA, saturated, and individual fatty acids in walnuts. Five different walnuts varieties have been considered and modified partial least square (MPLS) regressions have been performed. The SEs of prediction (SEP) in external validation (ranged from 2.12% for PUFA to 13.08% for MUFA) suggest that hyperspectral imaging can be a reliable tool for controlling these parameters in a simple, non-destructive and environmentally friendly way. |
topic |
walnut total fat fatty acids hyperspectral imaging near infrared chemometrics |
url |
https://www.frontiersin.org/articles/10.3389/fpls.2021.729880/full |
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