The unsaponifiables from mentioned corn oil rich in selenium were separated by designed TLC of silica gel G into 7 fractions. The sterol,4-methylsterol and triterpene alcohol were analyzed quantitatively by GC.

• 用制备薄层层析法将富硒玉米油的不皂化物分成 7个部分 ,然后用气相色谱法分别测定甾醇、4 -甲基甾醇和三萜醇的组成。