Spent coffee grounds extract rich in manooligosaccharides promote a healthier gut microbial community in a dose dependent manner
Metadatos
Afficher la notice complèteEditorial
American Chemical Society
Date
2019Referencia bibliográfica
Journal of Agricultural and Food Chemistry 2019, 67, 2500-2509
Résumé
Coffee is one of the most consumed beverages around the world and as a
consequence, spent coffee grounds are a massively produced residue that is causing
environmental problems. Reusing them is a major focus of interest nowadays. We extracted
mannoligosaccharides (MOS) from spent coffee grounds and submitted them to an in vitro
fermentation with human feces. Results obtained suggest that MOS are able to exert a
prebiotic effect on gut microbiota by stimulating the growth of some beneficial genera such
as Barnesiella, Odoribacter, Coprococcus, Butyricicoccus, Intestinimonas,
Pseudoflavonifractor, or Veillonella. Moreover, SCFA production also increased in a dose
dependent manner. However, we observed that 5-hydroxymethylfurfural, furfural and
polyphenols (which are either produced or released from spent coffee grounds matrix
during hydrolysis) could have an inhibitory effect on some beneficial genera such as
Faecalibacterium, Ruminococcus, Blautia, Butyricimonas, Dialister, Collinsella, or
Anaerostipes which could affect negatively to the prebiotic activity of MOS.