The effect of raw soya bean on in vitro active and passive accumulation by rat small intestine

Effect of soya consumption on hepatic monooxygenase enzyme system and some lipid parameters in rats

Young male rats were fed with diets containing Hungarian soya products (extruded or granulated soya preparates) as the only source of protein for four weeks. The weight gain of the animals, the cholesterol and triglyceride content of liver and the activity of the hepatic monooxygenase system were studied. 20% soya protein in the diet (either from extruded or from granulated soya products) supplemented with sulphur containing amino acids met the protein requirement of the young growing rats. In a separate experiment the protein depletion-repletion method was used to investigate the effect of Purina 500 E soya protein isolate on the above mentioned parameters. The results indicate that diets containing 20% soya protein are satisfactory for the regeneration of the protein depleted animals.

Adaptation of the domestic chicken, Gallus domesticus, to continuous feeding of albumin amylase inhibitors from wheat flour as gastro-resistant microgranules

Albumin amylase inhibitors were extracted from wheat flour, precipitated by salting out the extract with ammonium sulphate, and enclosed in cellulose-coated microgranules resistant to the peptic action in the chicken gizzard. Continuous intake of gastro-resistant wheat albumins significantly (P less than 0.01) depressed chicken growth rate, whereas native wheat albumins did not show such an effect. After 4 weeks of treatment, treated chickens showed a growth rate identical to that of control chickens thus showing that an adaptation to the presence of wheat albumins in the diet had occurred. Treated chickens also showed pancreas hypertrophy and a number of histological changes in the pancreas indicating degenerative processes in progress. Moreover, in treated chickens the production of pancreatic amylase was markedly increased (P less than 0.02), whereas pancreatic protease activity was less affected. The data obtained suggest that the synthesis of pancreatic amylase in chicken is under some homeostatic control of alpha-amylase in the intestine.