Microwave assisted extraction method was used to extract oil from perilla seeds compared with other chemical methods including Soxhlet extraction,stirring extraction and Sonicate extraction.The results showed: microwave extraction method has the higher extract efficiency,extraction rate and time saving with the comparison of other methods.The optimal conditions are as follows: extract twice in 5 minutes(first 3minutes and second 2minutes) with the petroleum ether as the solvent,the ratio of material to solv...