Abstract: The contents of amino acids, trace elements and toxic heavy metals were determined in the fruit bodies of Lentinusedodes cultivated with different sawdust-saving cultivation substrates. The nutritional value and security of the fruit bodies ofL.edodes cultivated with different sawdust-saving cultivation substrates were also discussed. The experimental results showedthat both sample1and sample2 contained 17 kinds of amino acids, 8 kinds of trace elements and 4 kinds of toxic heavy metals,but the contents of toxic heavy metals were lower than that of the State Standards on Food Hygiene. Comparison of the contentsof amino acids, trace elements and heavy mentals between sample1and sample2 was also made. It was found that two samplesfor test were equally good and health foods.

Key words: Lentinus edodes, sawdust-saving cultivation substrate, nutritional value, security