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Propionic fermentation by the probiotic Propionibacterium freudenreichii to functionalize whey

Abstract : A new probiotic functionalized sweet whey was evaluated. Weaned healthy piglets consumed sweet whey (SW), unmodified or fermented by P. freudenreichii CIRM-BIA 129 (PF-SW). Fecal short chain fatty acids amounts remained unchanged. Bifidobacteria were enhanced in the PF-SW group, and so was the expression of T-bet, which orchestrates Th1 differentiation of T lymphocytes, in mesenteric lymph nodes immune cells (MLNC). This was consistent with ex vivo increased TNF-α secretion by MLNC in response to lipopolysaccharide (LPS). The consumption of the functionalized whey induced a different response in peripheral blood mononuclear cells (PBMC) to ex vivo stimulations, as the inhibition of TNF-α secretion in response to concanavalin A stimulation. Thus, by cultivating a probiotic GRAS bacterium in concentrated whey, prior to spray drying, it is possible to transform this by-product into a functional ingredient. This opens new avenues for the development of functional ingredients through enhanced valorisation of whey.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02043531
Contributor : Laurent Jonchère <>
Submitted on : Thursday, February 21, 2019 - 9:42:56 AM
Last modification on : Tuesday, May 26, 2020 - 12:42:14 PM

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S. Huang, H. Rabah, Stéphanie Ferret-Bernard, L. Le Normand, F. Gaucher, et al.. Propionic fermentation by the probiotic Propionibacterium freudenreichii to functionalize whey. Journal of Functional Foods, Elsevier, 2019, 52, pp.620-628. ⟨10.1016/j.jff.2018.11.043⟩. ⟨hal-02043531⟩

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