With the method of urea fractionation,the content of PUFA is increased from 76. 9% to99. 9%,at the same time,the content of lindenic is increased from 64.7 to 90. 9 %.

• 采用尿素富集法，使苏子油中多不饱和脂肪酸的含量由原来的76．9%25提高到99．9%25，亚麻酸含量由64．7%25提高到90．9%25。