the relation between bacterial degradation of three viscous polysaccharides ( guar gum , ispaghula and xanthan gum ) by colonic bacteria in vitro and their effects on colonic function were investigated by comparing the results of anaerobic in vitro incubations with fresh faeces from seven healthy volunteers ( measuring viscosity , ph and gas production ) with the effects of feeding all three polysaccharides to the same volunteers for 1 week each ( 14-15 g/d ) on faecal mass and whole-gut transit time .
C0032595
bacterial
C0078596
xanthan gum