Abstract: The amino acid profiles of different parts of cultured Cordyceps sinensis were determined using amino acid analyzer in combination with post-column derivatization with ninhydrin. At least, 17 common amino acids and 8 essential amino acids were found in the residual solid left after the culture of Cordyceps sinensis and its fruit bodies and mycelia, respectively, which contained 8.32%, 21.68% and 23.19% total amino acid contents and 3.74%, 8.11% and 8.88% essential amino acid contents, respectively. Furthermore, not only the fruit bodies and mycelia of cultured Cordyceps sinensis but also the residual solid left contained adenine, adenosine and cordycepin. All of them are therefore potential candidates for further exploitation and utilization.

Key words: cultured Cordyceps sinensis, fruit body, mycelium, residual solid, amino acid