Article (Scientific journals)
Ultrafiltration and thermal processing effects on Maillard reaction products and biological properties of date palm sap syrups (Phoenix dactylifera L.)
Makhlouf-Gafsi, Ines; Krichen, Fatma; Ben Mansour, Riadh et al.
2018In Food Chemistry, 256, p. 397-404
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Keywords :
Date sap syrups; Ultrafiltration process; Temperature concentration; Antioxidant; Antimicrobial; Cytotoxicity
Abstract :
[en] The effect of ultrafiltration process and temperature concentration on MRPs content and antioxidant, antimicrobial and cytotoxic properties of date palm sap syrups were investigated. MRPs were analyzed by HPLC. Antioxidant activity was evaluated by reducing power and DPPH free radical and H2O2 scavenging activities. Antimicrobial activity was evaluated by the agar disk diffusion method. In vitro cytotoxic activity was examined by cell proliferation assay. Date sap syrups displayed strong antioxidant activities which are correlated 5HMF and 2F contents. In addition, concentration at 100 °C, unlike ultrafiltration process, enhanced significantly the antioxidant activities sap syrups and total phenolic contents. The antimicrobial activities showed marked activity against S. enterica, P. aeruginosa, S. aureus, L. monocytogenes with an inhibition zone of 21, 34, 27 and 34mm respectively. Cytotoxicity assays showed that sap syrups can inhibit the proliferation of HeLa cell lines at high concentration.
Disciplines :
Food science
Author, co-author :
Makhlouf-Gafsi, Ines
Krichen, Fatma
Ben Mansour, Riadh
Mokni, Abir
Sila, Assad
Bougatef, Ali
Blecker, Christophe ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Attia, Hamadi
Besbes, Souhail
Language :
English
Title :
Ultrafiltration and thermal processing effects on Maillard reaction products and biological properties of date palm sap syrups (Phoenix dactylifera L.)
Publication date :
2018
Journal title :
Food Chemistry
ISSN :
0308-8146
eISSN :
1873-7072
Publisher :
Elsevier, Netherlands
Volume :
256
Pages :
397-404
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 June 2018

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