关键词: 龙血树, 龙血竭, 发酵, 高效液相色谱法, 龙血素A, 龙血素B

Abstract: In this study, the contents of loureirins A and B in the fermentation products from the dry powder and the callus of Dracaena cochinchinensis were determined by HPLC with different fermentation time. The results showed that the dry powder produced more loureirin A during fermentation comparing with the callus of Dracaena cochinchinensis, and the content of loureirin A reached a peak of 0.253 mg/g by four-week fermentation. Loureirin B reached a peak of 0.519 mg/g after three weeks’ fermentation with the dry powder. Yet, the callus produced a small amount of loureirins A and B during the fermentation process. Although the content of loureirin B obtained by fermentation was much higher than those in the roots，stems，and leaves of Dracaena cochinchinensis, this process can still not be applied in drug production since the produced amount was lower than the quality standard of 0.4%.

Key words: Dracaena cochinchinensis, Dragon’s Blood, fermentation, HPLC, loureirin A, loureirin B