[Effect of various edible oils on the monoxygenases in liver of rats]

2 months old male rats were fed over a period of 10, 30 and 60 days a diet containing 1.20% sunflower oil, 2.10% sunflower oil and 10% rapeseed oil, 3.6% sunflower oil, 8% rapeseed iuk abd 6% soybean oil. The diets caused changes in the composition of the fatty acid of total lipids and in the activity of the monoxygenase in the liver. The level of the oleic acid in the livers of the 2nd and 3rd groups was elevated. The linolic acid level was elevated in all three groups, the level of the 1st group being the highest. The arachidonic acid level was diminished in all three groups. The aminopyrine demethylase activity increased in all groups only on the 60th day, the activity of the 1st group being the highest. The aniline hydroxylase activity of the 2nd group had a transient increase on the 30th day; on the 60th day only the activity of the 1st group was elevated.