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Jatropha seed oil content of 35% -40 % , and kernel oil content is as high as 50% -60% , and is rich in oleic acid and linoleic acid (70 % ) , particularly suitable for the production of biodiesel . Due to Jatropha seed meal exists toxicity , general regarded discard it or to make fertilizer , no comprehensive utilization , thereby constraining its comprehensive development . In this study, the the Jatropha seed system byproduct of biodiesel , Jatropha seed meal as raw material, the detoxification process , the key findings are as follows : 1 . Using ethanol - ethyl acetate extraction method removal of the fat-soluble toxins Jatropha seed cake . Jatropha seed cake fat-soluble toxins optimal removal conditions groping through the single factor experiment and L9 (3 ~ 4) orthogonal test for the removal of time 2h ??, 80 mesh , extraction solvent 85% ethanol solid-liquid ratio 1:10 , extraction temperature 50 ℃. The optimum process jatropha seed cake , fat-soluble toxins removal was 97.54% . 2 using the solvent extraction method, Jatropha seed cake protein extraction . On exploration by single factor experiment and L9 (3 ~ 4) orthogonal test Jatropha seed meal in protein extract optimal process extractant concentration 1.00mol / L 0.005mol/LPBS - buffer , 80 mesh particle size , extraction time 90min, solid-liquid ratio 1:12 , extraction temperature of 65 ° C . In this process the protein extraction rate of 98.11% . Ultrafiltration method crude protein extract the toxic protein curcin the removal performed . Further optimized by single factor test the fumble and orthogonal test , obtained the optimum process for the removal of the protein of Jatropha seed meal poisoning , ultrafiltration time of 60 min , ultrafiltration pressure 0.14MPa ultrafiltration temperature of 45 ° C. ultrafiltrate concentration 3.235mg/ml. In this process , the Jatropha seed cake toxic the protein curcin removal rate was 97.62% . Jatropha seed meal in protein content after detoxification reached 31.73% , crude fiber content of 6.69% , crude fat content of 5.2% . Balanced amino acid content , complete, including all 8 essential amino acids and four non- essential amino acids , amino acids totaled 14.1 % . Moreover meal rich in mineral elements , major elements K , Na , and Mg content more prominent , heavy metal Pb were not detected .
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