Fig. 4

Non-reducing SDS-PAGE of cowpea protein isolate (CPI), indigestible proteins (ICP) obtained after pepsin + pancreatin digestion of CPI pretreated with gelation (slow cooling), and 6th week feces from a male and b female rats: lane 1, standard molecular weight markers; lane 2, CPI; lane 3, ICP; lane 4, feces at baseline (before feeding experiment); lane 5, 20% of casein; lane 6, 19% of casein + 1% ICP; lane 7, 15% casein + 5% ICP; lane 8, 15% casein + 5% CPI. The high molecular weight bands are circled