Article (Scientific journals)
Effects of Spray Drying, Freeze Drying and Gamma Irradiation on the Antioxidant Activities of Camel and Cow Milk Fractions
Harizi, Nouha; Madureira, Joana; Zouari, Ahmed et al.
2023In Processes, 11 (3), p. 897
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Keywords :
antioxidants; freeze drying; gamma irradiation; milk fractions; spray drying; Antioxidant activities; Camel milks; Casein fractions; Cows' milk
Abstract :
[en] This work aimed to establish an integrated approach to investigate the total phenolic content and antioxidant activities of dried skim camel and cow milk and their fractions. The milk fractions were obtained by acid or enzymatic coagulation followed by spray drying (inlet temperature/outlet temperature: 125 ± 2 °C/90 ± 2 °C) or freeze drying (−50 °C, 0.05 mbar) coupled or not to gamma irradiation (at 5, 11, 22 kGy). The results showed that the total phenolic content (measured in gallic acid equivalent, GAE) varied depending on the drying technique. The freeze-drying process corresponded to the highest values of total phenolic compounds, with 247.23 ± 2.08 mg GAE/100 g powder for the β-casein fraction of camel milk (βC CaM) and 621.13 ± 4.16 mg GAE/100 g powder for the β-casein fraction of cow milk (βC CoM). Compared to spray-dried fractions, freeze-dried fractions showed generally higher ferric reducing antioxidant power for both camel milk and cow milk. The highest values of free radical scavenging activity were seen in the spray-dried β-casein fractions of camel milk (βC CaM) and cow milk (βC CoM) and in the freeze-dried acid whey of cow and camel milk (AW CaM and AW CaM). Freeze-dried acid whey (AW CaM and AW CoM) appeared to be less sensitive to gamma irradiation at 5 and 11 kGy.
Disciplines :
Food science
Author, co-author :
Harizi, Nouha;  Laboratory of Physiopathology, Food and Biomolecules, LR17ES03, Higher Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana, Tunisia
Madureira, Joana ;  Division of Agricultural Science, Mahidol University, Kanchanaburi, Thailand
Zouari, Ahmed ;  Laboratory of Analyses, Valorization and Food Safety, Food Engineering School of Sfax, University of Sfax, Sfax, Tunisia ; Laboratoire Réactions Génie des Procédés, LRGP-CNRS UMR 7274, Vandoeuvre-lès-Nancy, France
Ayadi, Mohamed ;  Université de Liège - ULiège > Département GxABT > Chemistry for Sustainable Food and Environmental Systems (CSFES) ; Laboratory of Analyses, Valorization and Food Safety, Food Engineering School of Sfax, University of Sfax, Sfax, Tunisia
Cabo Verde, Sandra ;  Division of Agricultural Science, Mahidol University, Kanchanaburi, Thailand
Boudhrioua, Nourhène;  Laboratory of Physiopathology, Food and Biomolecules, LR17ES03, Higher Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana, Tunisia
Language :
English
Title :
Effects of Spray Drying, Freeze Drying and Gamma Irradiation on the Antioxidant Activities of Camel and Cow Milk Fractions
Publication date :
March 2023
Journal title :
Processes
eISSN :
2227-9717
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI)
Volume :
11
Issue :
3
Pages :
897
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
EU - European Union
Funding text :
N.B is grateful to Eng. I.H. from the Center of Biotechnology, Sfax for his help with spray-drying and freeze-drying assays. N.B and N.H. are also grateful to the Ministry of Higher Education and Scientific Research and STICODE, University of Manouba, as contributors to the research program scholarship.This research was funded by the EU program, Partnership on Research and Innovation in the Mediterranean Area, PRIMA. ARTISANEFOOD Project, PRIMA-S2-2018-PCI2019-103453: Grant number PRIMA-S2-2018-PCI2019-103453 and The APC was funded by PRIMA-S2-2018-PCI2019-103453.
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since 26 November 2024

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