Yanqin Liu, Jinyan Li, Fuli Luo, Yulian Zhan*
The microbial transformation of artemisinin by Penicillium janthinellum was investigated. During 6 days at 28°C and 180 rpm, artemisinin was transformed to a product by Penicillium janthinellum. The product was identified as 4α-hydroxy-1-deoxyartemisinin. This is the first report of biotransformation of artemisinin by Penicillium janthinellum.