| To optimize the extraction technology of Sapindus mulorossi Gaertn. kernel oil, the effects of soaking time，extraction time，ratio of material to liquid and extraction temperature on the yield of Sapindus mulorossi Gaertn. kernel oil were studied by single factor experiment, and optimized by orthogonal experiment. Also the fatty acid composition of the oil was analyzed by gas chromatography. The results showed that the optimal extraction conditions were obtained as follows: soaking time 6 h，extraction time 8 h，ratio of material to liquid 1∶?20，extraction temperature 90?℃.Under these conditions，the average yield of Sapindus mulorossi Gaertn. kernel oil was 43.31%. The acid value, saponification value and iodine value of Sapindus mulorossi Gaertn. kernel oil were 4.132 mgKOH/g，190.26 mgKOH/g and 102.36 gI/100 g, respectively. Sapindus mulorossi Gaertn. kernel oil contained thirteen kinds of fatty acids and the unsaturated fatty acid content was as high as 84.63%. |
