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Tracking the degradation of fresh orange juice and discrimination of orange varieties: an example of NMR in coordination with chemometrics analyses.

Identifieur interne : 000873 ( Main/Exploration ); précédent : 000872; suivant : 000874

Tracking the degradation of fresh orange juice and discrimination of orange varieties: an example of NMR in coordination with chemometrics analyses.

Auteurs : Clayton R. De Oliveira [Brésil] ; Renato L. Carneiro [Brésil] ; Antonio G. Ferreira [Brésil]

Source :

Food chemistry [ 0308-8146 ] ; 2014.

RBID : pubmed:24996356

Descripteurs français

Wicri :
- geographic : Brésil.

English descriptors

KwdEn :
- Beverages (analysis), Brazil, Citrus sinensis (chemistry), Ethanol (analysis), Magnetic Resonance Spectroscopy (methods), Principal Component Analysis, Quality Control, Temperature.
MESH :
- chemical , analysis : Ethanol.
- geographic : Brazil.
- analysis : Beverages.
- chemistry : Citrus sinensis.
- methods : Magnetic Resonance Spectroscopy.
- Principal Component Analysis, Quality Control, Temperature.

Abstract

Brazil is currently the largest exporter of concentrated orange juice and, unlike the other exporter countries, the domestic consumption is mainly based on the fresh orange juice. The quality control by evaluating the major chemical constituents under the influence of the most important factors, such as temperature and storage time of the product, is very important in this context. Therefore, the objective of this study was to evaluate the influence of temperature and time on the degradation of fresh orange juice for 24h, by using (1)H NMR technique and chemometric tools for data mining. The storage conditions at 24h led to the production of the formic, fumaric and acetic acids; and an increase of succinic and lactic acids and ethanol, which were observed at low concentration at the initial time. Furthermore, analysis by PCA has successfully distinguished the juice of different species/varieties as well as the metabolites responsible for their separation.

DOI: 10.1016/j.foodchem.2014.05.026
PubMed: 24996356

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Brazil is currently the largest exporter of concentrated orange juice and, unlike the other exporter countries, the domestic consumption is mainly based on the fresh orange juice. The quality control by evaluating the major chemical constituents under the influence of the most important factors, such as temperature and storage time of the product, is very important in this context. Therefore, the objective of this study was to evaluate the influence of temperature and time on the degradation of fresh orange juice for 24h, by using (1)H NMR technique and chemometric tools for data mining. The storage conditions at 24h led to the production of the formic, fumaric and acetic acids; and an increase of succinic and lactic acids and ethanol, which were observed at low concentration at the initial time. Furthermore, analysis by PCA has successfully distinguished the juice of different species/varieties as well as the metabolites responsible for their separation.</div>
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Tracking the degradation of fresh orange juice and discrimination of orange varieties: an example of NMR in coordination with chemometrics analyses.

Tracking the degradation of fresh orange juice and discrimination of orange varieties: an example of NMR in coordination with chemometrics analyses.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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