中文摘要：

利用18种菌株对人参皂苷Rb1进行生物转化研究，发现一种绿毛状GY-06菌使人参皂苷Rb1有效地转化为Rg3．经形态学和内转录间隔区（internal transcribed spacer，ITS）基因序列分析，确定其为一种扩展青霉（Penicillium expansum）．

英文摘要：

18 microbial strains were used to screen their ability for the microbiological transformation of ginsenoside Rb1. GY-06 were found to convert ginsenoside Rb1 eficiently to Rg3. Blast results of ITS gene sequence of the strain GY-06 established that the strain GY-06 belonged to Penicillium and was close to Penicillium expansum.