Study on preparation technology of conjugated linolenic acid of rubber seed oil by alkali catalytic isomerization

Using rubber seed oil as material,conjugated linolenic acid was prepared by alkali catalytic isomerization,study the effect of reaction temperature,reaction time,the ratio of solvent to oil on as well as the amount of catalyst on the yield of CLA,meanwhile,the response surface methodology was employed to optimize the process for the maximum yield of CLA,the results showed that: the optimal conditions for the yield of CLA were reaction temperature 148 ℃,reaction time 2.6 h,the ratio of solvent to oil 18∶ 1 ml / g,the amount of catalyst 6%,at the same time using polyethylene glycol-400 as solvent and potassium hydrate as catalyst.At these conditions,the yield of CLA could reach 83.04%.