Barley products of different fibre composition selectively change microbiota composition in rats
Artikel i vetenskaplig tidskrift, 2018

1 Scope
Several dietary fiber properties are suggested to be important for the profiling of the microbiota composition, but those characteristics are rather unclear. Whether different physico‐chemical properties of barley dietary fiber influence the gut microbiota composition is investigated.
2 Methods and results
Seven diets containing equal amounts of dietary fiber from barley malts, brewer's spent grain (BSG), and barley extracts, resulting in varying amounts of β‐glucan, soluble arabinoxylan, and insoluble arabinoxylan in the diets were given to conventional rats. Malts increased microbiota alpha diversity more than BSG and the extracts. The intake of soluble arabinoxylan was related to Akkermansia and propionic acid formation in the cecum of rats, whereas β‐glucan and/or insoluble arabinoxylan were attributed to some potentially butyrate‐producing bacteria (e.g., Lactobacillus, Blautia, and Allobaculum).
3 Conclusion
This study demonstrates that there is a potential to stimulate butyrate‐ and propionate‐producing bacteria in the cecum of rats with malt products of specific fiber properties. Moreover, BSG, a by product from beer production, added to malt can possibly be used to further modulate the microbiota composition, toward a higher butyric acid formation. A complex mixture of fiber as in the malts is of greater importance for microbiota diversity than purer fiber extracts.




dietary fiber


Cristina Teixeira

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Olena Prykhodko

Lunds universitet

Marie Alminger

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Frida Fåk Hållenius

Lunds universitet

Margareta Nyman

Lunds universitet

Molecular Nutrition and Food Research

16134125 (ISSN) 16134133 (eISSN)

Vol. 62 19 1701023







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