Abstract:

Objective To investigate per capita dietary Se intake and serum reference value of selenium of Jinan residents， and explore the influences of sex and age.  Methods  From August 2007 to January 2008, 485 healthy Jinan subjects were recruited for filling in seven days dietary intakes questionnaires to investigate dietary Se daily intake. Then hydrogenation atomic absorption spectrometry (HGAAS) was used to detect concentration of serum Se after samples were digested by microwave.  ResultsPer capita dietary intake of Se of healthy Jinan adults was 55.93μg /d, and selenium intake of males 66.98μg/d was higher than that of females 49.57μg/d（P＜0.05）,  indicating that selenium intake level was not influenced by age. Serum Se content of Jinan residents was （61.84±13.25）μg/L and reference value was （35.87～87.81）μg/L. Serum selenium level of males 63.40μg/L was higher than that of females 60.77μg/L（P＜0.05）, which was not influenced by age. Conclusion  Reference value of serum Se concentration of Jinan residents was initially set, and this investigation showed that dietary Se intake and serum Se level in Jinan residents were low, suggesting that Jinan residents should take Se-enriched foods.

Key words:  Serum; Se;Reference value; Dietary intake; Jinan