Journal
MOLECULAR NUTRITION & FOOD RESEARCH
Volume 66, Issue 21, Pages -Publisher
WILEY
DOI: 10.1002/mnfr.202101096
Keywords
fermentation; lactobacilli; metabolites; microbiota; rye
Categories
Funding
- Swedish Innovation Agency (VINNOVA)
- Swedish Research Council
- National Natural Science Foundation of China
- Academy of Finland [321716, 334814]
- European Union [754412]
- Jane and Aatos Erkko Foundation
- Lantmannen Research Foundation [2020H025, 2021H024]
- National Natural Science Foundation of China [81861138007]
- Re:Source project [44220-1]
- Swedish Research Council [2017-05840]
- Swedish Research Council [2017-05840] Funding Source: Swedish Research Council
- Academy of Finland (AKA) [334814, 321716, 321716, 334814] Funding Source: Academy of Finland (AKA)
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This study used metabolomics to identify seven microbial metabolites commonly produced during fermentation and found that a mixture of these metabolites exhibited stronger inhibition against bacteria compared to individual compounds. The results suggest that metabolites produced by LAB may modulate local microbial ecology through synergistic effects.
Scope Fermentation improves many food characteristics using microbes, such as lactic acid bacteria (LAB). Recent studies suggest fermentation may also enhance the health properties, but mechanistic evidence is lacking. The study aims to identify a metabolite pattern reproducibly produced during sourdough and in vitro colonic fermentation of various whole-grain rye products and how it affects the growth of bacterial species of potential importance to health and disease. Methods and results The study uses Lactiplantibacillus plantarum DSMZ 13890 strain, previously shown to favor rye as its substrate. Using LC-MS metabolomics, the study finds seven microbial metabolites commonly produced during the fermentations, including dihydroferulic acid, dihydrocaffeic acid, and five amino acid metabolites, and stronger inhibition is achieved when exposing the bacteria to a mixture of the metabolites in vitro compared to individual compound exposures. Conclusion The study suggests that metabolites produced by LAB may synergistically modulate the local microbial ecology, such as in the gut. This could provide new hypotheses on how fermented foods influence human health via diet-microbiota interactions.
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