样品予处理采用氯仿&甲醇（9：1）混合液为提取剂，使用一只长颈漏斗将提取和净化步骤一次完成。
The samples of grain were extracted with chloroform-methyl alcohol ( 9:1 ), and using a long neck funnel , extracting aad Cleaning up of the samples were finished at thg same time .
长颈漏斗