13 fatty acids components, 2 sterol and phytol ones were identified from R. dentatua L., amounting to 86.03% of the total constituents.

从齿中分离鉴定了13个脂肪成分、2个甾类成分和1个植醇，占色谱总馏分出峰面积86.03%。

A mutant, TS-N-121 was obtained by mutation and plate screening from a parent strain Mycobacterium fortuitum MF2 , which could transform sterol into androstanedione as the main product.

从雄甾二转化产生菌偶发分枝杆菌MF2出发,经紫外诱变结合平板筛选,获得一株主要转化生产睾变株TS-N-121。