The Effect of the Storage Time on the Distribution and Content of Adenosine and Cordycepin in Silkworm Cordyceps Militaris(L.)

Objective:To study the effect of the storage time on the distribution and content of adenosine and cordycepin in silkworm Cordyceps militaris(L.).Methods:The content of adenosine and cordycepin in Silkworm Cordyceps fruiting bodies,sclerotic and the entire grass were measured by RP-HPLC and compared with the same storage time of rice Cordyceps mili-taris(L.).Results:The content of adenosine and cordycepin in silkworm Cordyceps militaris(L.) which was stored one year were higher in fruiting body than sclerotic.But it was in the sclerotic that the total amounts of adenosine and cordycepin were the higher.And for these stored two years,the content of adenosine and cordycepin had decreased,but the total amounts and the distribution did not change significantly.The total content of adenosine in one year' Silkworm Cordyceps was higher than two years',and the difference was statistically significant(P0.05).But the content of cordycepin had no significant difference(P 0.05).The content of adenosine in rice Cordyceps militaris(L.) was 1.6 times than Silkworm Cordyceps militaris(L.).And as to cordycepin,it was 5 times than Silkworm Cordyceps militaris(L.).Conclusion:There was no significant effect of the storage time on the distribution and total amounts' order of adenosine and cordycepin in silkworm Cordyceps militaris(L.),but there was significant effect on the content of adenosine.