Study On The Extraction Of Wheat Germ Oil And Concentration Of V_E

This paper studied many aspects of wheat germ. 1. the paper has done some research on the traditional extraction of the wheat germ oil. The result showed that there is significant correlation between many aspects. the best processing conditions of extraction of wheat germ oil are that 95% ethanol and hexane are the first choices, that the more high temperature, the more rapid the extraction of germ oil, and that the optimum mass ratio of solvent and materials is 8:1 for hexane and 7:1 for 95% ethanol 2. The thesis discussed a study on the extraction of wheat germ oil by SCF-C02. The suitable extracting condition in the present study were that the extracting speed in the extraction was increased with the increase of extraction pressure; the suitable extracting temperature is 43 ~C -48 C. 3. With the study on the effect of different separation pressure to Vitamin E in wheat germ oil,it may concluded that the Vitamin E in the oil increased with the pressure increasing from 2OMPa-3OMPa., but it isn抰 clear above 3OMPa. The suitable t~nparature is between 43C?8X12. 4. There is much more comprehensive analysis between the traditional extraction and the SFE-C02 extraction?The result showed that SCF-C02 has more advantages than the traditional means.(1 )the extracting oil may get to the first grade oil of commerce without any processing oil> by adapting the suitable extracting pressure and temperature and the suitable separating pressure and temperature in the course of extraction by the SCF-C02 .(2)the concentration of Vitamin E will be corxiensed by 50%-lOO% with the correct of conditions. (3)The wheat germ oil has no solvent left on extraction by the SCF-C02, but traditional means can抰 do this well.