873 the variance of "absorption" rate much higher than 34-42% need to be due to gastric emptying before one could be certain that "the principal mode of action of gel-fibre on the absorption of glucose and paracetamol in man is a delay in the rate
of gastric emptying. In
a
1978,’
study reported I demonstrated
the Nutrition Society in December, that, in rats, when fractional gastric
to
emptying-rates and fractional disappearance-rates of glucose from the small intestine were measured 30 min and 1 h after low, intermediate, and high viscosity tube fed meals containing purified or depolymerised guar gum, fractional disappearancerates correlated well with gastric emptying-rates after all three meals (r=0.86, 0-99, at 1 h and 0.96, 0.90, 0.99 at 30 min for low, intermediate, and high viscosity meals, respectively; n=8 in each group). An analysis of variance, with the ratio of dependent significantly affect the value of the ratio. However, the high compared with the low viscosity meal prolonged the half-time of gastric emptying to 41 min from 16 min (P
of gastric emptying. In
a
1978,’
study reported I demonstrated
the Nutrition Society in December, that, in rats, when fractional gastric
to
emptying-rates and fractional disappearance-rates of glucose from the small intestine were measured 30 min and 1 h after low, intermediate, and high viscosity tube fed meals containing purified or depolymerised guar gum, fractional disappearancerates correlated well with gastric emptying-rates after all three meals (r=0.86, 0-99, at 1 h and 0.96, 0.90, 0.99 at 30 min for low, intermediate, and high viscosity meals, respectively; n=8 in each group). An analysis of variance, with the ratio of dependent significantly affect the value of the ratio. However, the high compared with the low viscosity meal prolonged the half-time of gastric emptying to 41 min from 16 min (P
