LC-MS phenolic profiling combined with multivariate analysis as an approach for the characterization of extra virgin olive oils of four rare Tunisian cultivars during ripening.
Food Chem
; 229: 9-19, 2017 Aug 15.
Article
en En
| MEDLINE
| ID: mdl-28372256
ABSTRACT
In this work, the phenolic composition of four rare cultivars grown under the same agronomical and environmental conditions was studied. This is to test the effects of cultivars and ripening index essentially on phenolic composition in olive oils as well as tocopherols composition, organoleptic profiling and oxidative properties. Furthermore, some agronomical traits were determined in which a general increase in the size of the fruit and oil contents were recorded for all cultivars. The phenolic fractions were identified and quantified using liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (LC-DAD-ESI-MS/MS) in multiple reaction monitoring mode (MRM). A total of 13 phenolic compounds belonging to different chemical families were determined. Qualitative and quantitative differences in phenolic composition were observed among cultivars and also among sampling times. On the contrary to the agronomical traits, a general decrease (p<0.05) of total phenolic compounds was observed during maturation. Likewise, a decrease in tocopherols concentrations and oxidative properties was observed.
Palabras clave
2,2-Diphenyl-1-picrylhydrazyl (DPPH) (PubChem CID: 2735032); Acetic acid (PubChem CID: 176); Acetonitrile (PubChem CID: 6342); Alpha-tocopherol (PubChem CID: 14985); Apigenin (PubChem CID: 5280443); Beta-tocopherol (PubChem CID: 6857447); Caffeic acid (PubChem CID: 689043); Cyclohexane (PubChem CID: 8078); Delta-tocopherol (PubChem CID: 92094); Diosmetin (PubChem CID: 5281612); Ferulic acid (PubChem CID: 445858); Four rare Tunisian cultivar, ripening index; Gamma-tocopherol (PubChem CID: 92729); Hexane (PubChem CID: 8058); LC-DAD-ESI-MS/MS; Luteolin (PubChem CID: 5280445); Methanol (PubChem CID: 887); Oxidative state; Phenolic compounds; Protocatechuic acid (PubChem CID: 72); Tyrosol (PubChem CID: 10393); p-Coumaric acid (PubChem CID: 637542)
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fenoles
/
Análisis Multivariante
/
Cromatografía Liquida
/
Espectrometría de Masas en Tándem
/
Aceite de Oliva
/
Frutas
Tipo de estudio:
Prognostic_studies
/
Qualitative_research
País/Región como asunto:
Africa
Idioma:
En
Revista:
Food Chem
Año:
2017
Tipo del documento:
Article
País de afiliación:
Túnez