Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

IN VITRO BIODEGRADATION OF OLEUROPEIN BY LACTOBACILLUS PLANTARUM FSO175 IN STRESS CONDITIONS (pH, NaCl AND GLUCOSE)

Abstract : The objective of this work is to study the oleuropein (OLP) biodegradation by a strain of Lactobacillus plantarum FSO175 under conditions (pH 4.5, NaCl 5% and glucose 1%), during 7 days of incubation at 30 °C, in modified MRS broth containing OLP as carbon source. The results obtained, by HPLC analyses, showed that the biodegradation of OLP by L. plantarum FSO175, is accompanied with increase of hydroxytyrosol (HT) content and acidity values. The yields of OLP degradation and HT accumulation are depending on carbon sources, stress conditions and time of incubation. So that, the drastic reduction in OLP biodegradation, obtained at pH 6.7 (trial B), decreased significantly (p <0.05) in presence of NaCl 5% (trial D) and with glucose 1% (trial C). Indeed, the OLP biodegradation rate was maximal at pH 4.5 (trial E) and was higher even with NaCl 5% (trial F). In contrast, in presence of combined stress conditions (glucose 1%, pH 4.5 and NaCl 5%: trial G), the biodegradation of OLP decreased significantly (p <0.05). The effectiveness of the strain L. plantarum FSO175 in OLP biodegradation leading to variable yields of HT production, revealed its promising perspectives as starter culture, under controlled stress conditions of pH 4.5 and NaCl 5%, allowing the production of green table olives rich of HT, the main antioxidant highly desired in foods.
Liste complète des métadonnées

https://hal.univ-lille.fr/hal-03123180
Contributeur : Lilloa Université de Lille <>
Soumis le : mercredi 27 janvier 2021 - 15:41:33
Dernière modification le : jeudi 28 janvier 2021 - 03:21:51
Archivage à long terme le : : mercredi 28 avril 2021 - 19:02:37

Fichier

jmbfs_1071_ghabbour.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Collections

Citation

Nabil Ghabbour, Yahya Rokni, Houssam Abouloifa, Reda Bellaouchi, Nour-Eddine Chihib, et al.. IN VITRO BIODEGRADATION OF OLEUROPEIN BY LACTOBACILLUS PLANTARUM FSO175 IN STRESS CONDITIONS (pH, NaCl AND GLUCOSE). Journal of Microbiology, Biotechnology and Food Sciences, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, 2020, 9 (4), pp.769-773. ⟨10.15414/jmbfs.2020.9.4.769-773⟩. ⟨hal-03123180⟩

Partager

Métriques

Consultations de la notice

11

Téléchargements de fichiers

23