Abstract
Rats were supplied with 25 kinds of food, which were divided into 5 classes of protein and 5 classes of fat content, to examine the effect of dietary protein and fat on the metabolism and retention of DDT in the liver. The results suggested that dietary protein and fat changed DDT and its metabolites concentration in liver. The concentration of DDT decreases according to the increase of dietary protein content. The concentration of DDT and its metabolites in liver increases when the dietary fat content increases. Polynomial and multiple regression analyses were carried out to confirm the effect of dietary protein and fat on DDT metabolism. The results suggest that the residual concentration of DDT and its metabolites (DDD and DDE) is a function of dietary protein and fat content, and can be represented in equation form. The estimation of the concentration of DDT and its metabolites from the equation agrees well with the measured concentration in liver.
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