[Investigations on cordycepin production by solid culture of Cordyceps militaris].

An efficient method to produce cordycepin by solid culture using Cordyceps militaris was investigated in this study. Firstly, the changes of cordycepin during various growing periods of solid culture using 5 strains of C. militaris were detected, the best strain and optimal growing period for cordycepin production were determined. Then, by experiments of quadratic rotation-orthogonal combination design and orthogonal design, the medium composition and growth conditions for high yield of cordycepin were optimized. With the optimized method to produce cordycepin, the content of cordycepin in the medium was increased to 0.60%, which was nearly 2 times higher than the highest yield reported.