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The article presents a study that tests the effects of white wheat bread containing 10% sugar beet fiber (BBP) on rats' serum cholesterols and hepatic messenger ribonucleic acids (mRNAs). It notes that total cholesterol (TC) and high density lipoproteins (HDL)-cholesterol concentrations were determined. Results show that there were no significant variations in rats that fed on white bread powder without sugar beet fiber (BP) and BBP. It also cites changes in the rats' serum lipid levels.

The article discusses a study which investigated the physiological importance of potato peptides in rats fed on cholesterol-free diet. The diet contained 20% potato peptides was compared with two diets containing either 20% casein or 20% soy peptides. The study found high concentration of potato peptides and soy peptides on the fecal excretion of neutral and acidic sterols. The observed changes in the serum cholesterol levels in rats are associated with different mechanisms.