Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 6754-6762 |
| Number of pages | 8 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 61 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 2013 |
| MoE publication type | A1 Journal article-refereed |
Fingerprint
Keywords
- bifidobacteria
- brewer's spent grain
- colon microbiota
- dietary fiber
- in vitro fermentation
- lactobacilli
- lignan
- lignin
Cite this
}
Interactions of a lignin-rich fraction from Brewer's spent grain with gut microbiota in vitro. / Niemi, Piritta (Corresponding Author); Aura, Anna-Marja; Maukonen, Johanna; Smeds, A.I.; Mattila, Inga; Niemelä, Klaus; Tamminen, Tarja; Faulds, C.B.; Buchert, Johanna; Poutanen, Kaisa.
In: Journal of Agricultural and Food Chemistry, Vol. 61, No. 27, 2013, p. 6754-6762.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Interactions of a lignin-rich fraction from Brewer's spent grain with gut microbiota in vitro
AU - Niemi, Piritta
AU - Aura, Anna-Marja
AU - Maukonen, Johanna
AU - Smeds, A.I.
AU - Mattila, Inga
AU - Niemelä, Klaus
AU - Tamminen, Tarja
AU - Faulds, C.B.
AU - Buchert, Johanna
AU - Poutanen, Kaisa
PY - 2013
Y1 - 2013
N2 - Lignin is a constituent of plant cell walls and thus is classified as part of dietary fiber. However, little is known about the role of lignin in gastrointestinal fermentation. In this work, a lignin-rich fraction was prepared from brewer’s spent grain and subjected to an in vitro colon model to study its potential bioconversions and interactions with fecal microbiota. No suppression of microbial conversion by the fraction was observed in the colon model, as measured as short-chain fatty acid production. Furthermore, no inhibition on the growth was observed when the fraction was incubated with strains of lactobacilli and bifidobacteria. In fact, the lignin-rich fraction enabled bifidobacteria to survive longer than with glucose. Several transiently appearing phenolic compounds, very likely originating from lignin, were observed during the fermentation. This would indicate that the gut microbiota was able to partially degrade lignin and metabolize the released compounds.
AB - Lignin is a constituent of plant cell walls and thus is classified as part of dietary fiber. However, little is known about the role of lignin in gastrointestinal fermentation. In this work, a lignin-rich fraction was prepared from brewer’s spent grain and subjected to an in vitro colon model to study its potential bioconversions and interactions with fecal microbiota. No suppression of microbial conversion by the fraction was observed in the colon model, as measured as short-chain fatty acid production. Furthermore, no inhibition on the growth was observed when the fraction was incubated with strains of lactobacilli and bifidobacteria. In fact, the lignin-rich fraction enabled bifidobacteria to survive longer than with glucose. Several transiently appearing phenolic compounds, very likely originating from lignin, were observed during the fermentation. This would indicate that the gut microbiota was able to partially degrade lignin and metabolize the released compounds.
KW - bifidobacteria
KW - brewer's spent grain
KW - colon microbiota
KW - dietary fiber
KW - in vitro fermentation
KW - lactobacilli
KW - lignan
KW - lignin
U2 - 10.1021/jf401738x
DO - 10.1021/jf401738x
M3 - Article
VL - 61
SP - 6754
EP - 6762
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
SN - 0021-8561
IS - 27
ER -