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首页> 外文期刊>Journal of Agricultural and Food Chemistry >PILOT SCALE EXTRACTION OF RICE BRAN OIL WITH DENSE CARBON DIOXIDE
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PILOT SCALE EXTRACTION OF RICE BRAN OIL WITH DENSE CARBON DIOXIDE

机译：浓碳二氧化碳中试提取米糠油

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The purpose of this study was to measure the effects of temperature, pressure, and flow rate of dense CO2 on its ability to extract, refine, and fractionate rice bran oil. Column beds (300 g) of rice bran were extracted with dense CO2 at a flow rate of similar to 2.5 kg/h, temperatures of 0-60 degrees C, and pressures of 17-31 MPa over a period of 6 h. The extracted total oil; the free fatty acid, alpha-tocopherol, sterols (campesterol, stigmasterol, beta-sitosterol), and oryzanol components; together with moisture were measured at intervals. Extraction was almost complete in 6 h, and rates of extraction were consistent with saturation of the CO2 with rice bran oil throughout most of the process. Extraction of the oil components was described by apparent partition coefficients between the oil and CO2 phases. The observed differences in partition coefficients provide a basis for refining and fractionation of rice bran oil.
机译：这项研究的目的是测量温度，压力和浓二氧化碳对其提取，精制和分馏米糠油的能力的影响。在6小时内，以约2.5 kg / h的流速，0-60摄氏度的温度和17-31 MPa的压力用浓CO2提取米糠的柱床（300 g）。提取的总油;游离脂肪酸，α-生育酚，固醇（菜油甾醇，豆甾醇，β-谷甾醇）和谷维素成分;定期测量水分。萃取在6小时内几乎完成，萃取速率与整个过程中大部分米糠油中的CO2饱和度一致。通过油相和CO2相之间的表观分配系数描述了油成分的提取。观察到的分配系数差异为米糠油的精制和分馏提供了基础。

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