pectin and guaran , two polysaccharides readily fermented by intestinal bacteria , led to a higher excretion of peg 4000 but an unaltered excretion of peg 900 , whereas methylcellulose and carrageenan , two polysaccharides more inert against microbial degradation , were associated with a lower excretion of peg 900 with unchanged excretion of peg 4000 .
C0007289
carrageenan
C0032594
polysaccharides