Effects of Soybean β-Conglycinin on Body Fat Ratio and Serum Lipid Levels in Healthy Volunteers of Female University Students

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The changes in body fat ratio and serum lipids induced by the ingestion of (β-conglycinin were examined in 41 healthy female university student volunteers. The trend of change in body fat ratio following the ingestion of β-conglycinin differed between students with a baseline body fat ratio over 25% and those less than 25%. In the former group, the ingestion of β-conglycinin suppressed the increase in body fat ratio. Moreover the six subjects who had a high total cholesterol level (5.72 mmol/L or higher) tended to have reduced levels of serum triglyceride, free fatty acid, total cholesterol and lipoprotein (a) after the ingestion of β-conglycinin, although those levels did not change significantly. The number of subjects was only six, therefore it was inferred that significant changes were not observed. Thus, ingestion of soybean β-conglycinin suppressed the increase in body fat ratio in individuals with a high baseline body fat ratio and reduced relatively high serum levels of lipids. Those results suggest that if soybean β-conglycinin is ingested continuously (5 g daily), it will be effective in keeping body fat ratio and serum lipid levels normal and eliminating excessive lipids from the body.
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