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Comparison of Milk Kefirs Obtained from Cow's, Ewe's and Goat's Milk: Antioxidant Role of Microbial-Derived Exopolysaccharides.
M'hir, Sana; Ayed, Lamia; De Pasquale, Ilaria; Fanizza, Elisabetta; Tlais, Ali Zein Alabiden; Comparelli, Roberto; Verni, Michela; Latronico, Rosanna; Gobbetti, Marco; Di Cagno, Raffaella; Filannino, Pasquale.
Afiliación
  • M'hir S; Laboratory of Microbial Ecology and Technology (LETMi), National Institute of Applied Sciences and Technology (INSAT), University of Carthage, BP 676, Tunis 1080, Tunisia.
  • Ayed L; Department of Animal Biotechnology, Higher Institute of Biotechnology of Beja, University of Jendouba, BP 382, Beja 9000, Tunisia.
  • De Pasquale I; Laboratory of Microbial Ecology and Technology (LETMi), National Institute of Applied Sciences and Technology (INSAT), University of Carthage, BP 676, Tunis 1080, Tunisia.
  • Fanizza E; CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy.
  • Tlais AZA; CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy.
  • Comparelli R; Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy.
  • Verni M; National Interuniversity Consortium of Materials Science and Technology (INSTM), Bari Research Unit, 70126 Bari, Italy.
  • Latronico R; Faculty of Agricultural, Environmental and Food Sciences, Libera Università di Bolzano, 39100 Bolzano, Italy.
  • Gobbetti M; CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy.
  • Di Cagno R; Department of Environmental Biology, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.
  • Filannino P; Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy.
Antioxidants (Basel) ; 13(3)2024 Mar 11.
Article en En | MEDLINE | ID: mdl-38539868
ABSTRACT
Different types of milk are used in the production of milk kefir, but little information is available on the release of potentially antioxidant exopolysaccharides (EPS). The aim of this study was to investigate whether the microbial dynamics and EPS release are dependent on the milk substrate. In our study, the inoculated microbial consortium was driven differently by each type of milk (cow, ewe, and goat). This was evident in the sugar consumption, organic acid production, free amino release, and EPS production. The amount and the composition of the secreted EPS varied depending on the milk type, with implications for the structure and functional properties of the EPS. The low EPS yield in ewe's milk was associated with a higher lactic acid production and thus with the use of carbon sources oriented towards energy production. Depending on the milk used as substrate, the EPS showed different monosaccharide and FT-IR profiles, microstructures, and surface morphologies. These differences affected the antiradical properties and reducing power of the EPS. In particular, EPS extracted from cow's milk had a higher antioxidant activity than other milk types, and the antioxidant activity was concentration dependent.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Antioxidants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Túnez Pais de publicación: Suiza

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Antioxidants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Túnez Pais de publicación: Suiza