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- Title
Use of the β-Glucan-Producing Lactic Acid Bacteria Strains Levilactobacillus brevis and Pediococcus claussenii for Sourdough Fermentation—Chemical Characterization and Chemopreventive Potential of In Situ-Enriched Wheat and Rye Sourdoughs and Breads
- Authors
Schlörmann, Wiebke; Bockwoldt, Julia A.; Hübner, Sabine M.; Wittwer, Elisa; Reiners, Sarah; Lorkowski, Stefan; Dawczynski, Christine; Ehrmann, Matthias A.; Glei, Michael
- Abstract
The aim of the present study was to examine β-glucan production and the potential prebiotic and chemopreventive effects of wheat and rye sourdoughs and breads generated with wild-type and non-β-glucan-forming isogenic mutant strains of Levilactobacillus brevis and Pediococcus claussenii. Sourdough and bread samples were subjected to in vitro digestion and fermentation. Fermentation supernatants (FS) and pellets (FP) were analyzed (pH values, short-chain fatty acids (SCFA), ammonia, bacterial taxa) and the effects of FS on LT97 colon adenoma cell growth, viability, caspase-2 and -3 activity, genotoxic and antigenotoxic effects and on gene and protein expression of p21, cyclin D2, catalase and superoxide dismutase 2 (SOD2) were examined. Concentrations of SCFA were increased and concentrations of ammonia were partly reduced in the FS. The relative abundance of Bifidobacteriaceae was increased in all FPs. Treatment with FS reduced the growth and viability of LT97 cells and significantly increased caspase-2 and -3 activities without exhibiting genotoxic or antigenotoxic effects. The p21 mRNA and protein levels were increased while that of cyclin D2 was reduced. Catalase and SOD2 mRNA and protein expression were marginally induced. The presented results indicate a comparable chemopreventive potential of wheat and rye sourdoughs and breads without an additional effect of the formed β-glucan.
- Subjects
COLON tumors; FERMENTED foods; IN vitro studies; PREBIOTICS; BREAD; AMMONIA; CELL survival; GENE expression; BETA-glucans; PEDIOCOCCUS; MESSENGER RNA; LACTIC acid; GRAM-positive bacteria; WHEAT; CHEMOPREVENTION; CASPASES; SHORT-chain fatty acids
- Publication
Nutrients, 2022, Vol 14, Issue 7, p1510
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu14071510