In vitro fermentability of sugar beet pulp derived oligosaccharides using human and pig fecal inocula.
The in vitro fermentation characteristics of different classes of sugar beet pectic oligosaccharides (SBPOS) were studied using human and pig fecal inocula. The SBPOS consisted mainly of partially acetylated rhamnogalacturonan oligosaccharides and partially methyl-esterified/acetylated homogalacturonan oligosaccharides. Some SBPOS contained an unsaturated galacturonic acid residue at their non-reducing end. It was shown that SBPOS could be completely fermented by human and pig fecal microbiota, thereby producing butyrate yet mainly acetate and propionate as metabolites. The degradation of SBPOS by pig fecal microbiota was different and much slower compared to human fecal microbiota. In general, rhamnogalacturonan oligosaccharides were degraded slower than homogalacturonan oligosaccharides. Acetylation of rhamnogalacturonan oligosaccharides lowered the degradation rate by pig fecal microbiota but not by human fecal microbiota. No classic bifidogenic effect was shown for SBPOS using human fecal inoculum. However, several other potentially interesting modifications in the microbiota composition that can be associated with host health were observed, which are discussed.
Laboratory of Food Chemistry, Wageningen University , Post Office Box 17, 6700 AA Wageningen, Netherlands.
Antonius G M
AG
Leijdekkers
Marisol
M
Aguirre
Koen
K
Venema
Guido
G
Bosch
Harry
H
Gruppen
Henk A
HA
Schols
D000818:Animals; D001419:Bacteria / Q000145:classification / Q000302:isolation & purification* / Q000378:metabolism*; D027461:Beta vulgaris / Q000378:metabolism* / Q000382:microbiology; D005243:Feces / Q000382:microbiology*; D005285:Fermentation; D006801:Humans; D064307:Microbiota; D009844:Oligosaccharides / Q000378:metabolism*; D013552:Swine; D014866:Waste Products / Q000032:analysis
D009844:Oligosaccharides; D014866:Waste Products