Title :

Utilization of front-face fluorescence spectroscopy for monitoring lipid oxidation during Lebanese Qishta aging

Author(s) :

Najib, Mustapha [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Botosoa, Eliot [Auteur]
Institut Charles Viollette (ICV) - EA 7394 [ICV]
Hallab, Walid [Auteur]
Hallab, Karim [Auteur]
Hallab, Zaher [Auteur]
Hamze, Monzer [Auteur]

Delaplace, Guillaume [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Karoui, Romdhane [Auteur]
Institut Charles Viollette (ICV) - EA 7394 [ICV]
Chihib, Nour-Eddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Journal title :

LWT

Abbreviated title :

LWT

Volume number :

130

Pages :

109693

Publisher :

Elsevier BV

Publication date :

2020-08

ISSN :

0023-6438

English keyword(s) :

Qishta
Fat oxidation
Aging
Fluorescence spectroscopy
PCA

HAL domain(s) :

Sciences du Vivant [q-bio]/Ingénierie des aliments

English abstract : [en]

Front-face fluorescence spectroscopy technique coupled with chemometric tools was used for predicting the freshness state of a Lebanese dairy product called Qishta, stored up to 20 days. Acid, peroxide and thiobarbituric ...
Show more >Front-face fluorescence spectroscopy technique coupled with chemometric tools was used for predicting the freshness state of a Lebanese dairy product called Qishta, stored up to 20 days. Acid, peroxide and thiobarbituric acid reactive substances (TBARS) values reached no more than 0.93 mg NaOH g−1 fat, 6.22 meq O2 Kg−1 fat, and 0.0313 mg malonaldehyde (MA) kg−1 sample, respectively, throughout the investigated storage time. In parallel, fluorescence emission spectra of tryptophan and riboflavin, and fluorescence excitation spectra of vitamin A were recorded and showed the highest fluorescence intensity for the Qishta samples aged of 20 days and the lowest intensity for the fresh ones. The primary and secondary indicators of lipid oxidation showed that Qishta can be stored for 20 days without any alteration despite the increase in the TBARS after 16 days of storage. Principal component analysis (PCA) applied on riboflavin emission spectra allowed better discrimination between Qishta samples with a clear distinction of those aged 20 days while some overlapping was noticed between samples aged below 16 days. A high correlation (R2 = 0.923) was observed between the peroxide value and the intensity of the riboflavin fluorescence recorded at 460 nm.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Submission date :

2020-12-09T15:09:12Z