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首页> 外文期刊>Separation and Purification Technology >Simultaneous degumming, dewaxing and decolorizing crude rice bran oil using nonporous membranes
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Simultaneous degumming, dewaxing and decolorizing crude rice bran oil using nonporous membranes

机译：使用无孔膜同时对粗米糠油进行脱胶，脱蜡和脱色

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Efficacy of nonporous membrane has been evaluated for simultaneous degumming, decolorizing and dewaxing crude rice bran oil (CRBO). Membrane processing of CRBO showed that phospholipids (PL) were almost completely rejected (>99%) by nonporous membranes in both industrial and laboratory-prepared samples. Phosphorus levels in the membrane processed rice bran oil (RBO) samples were very low (<2 ppm) which indicated that both hydratable as well as nonhydratable PL were effectively rejected by the membrane. Further phosphoglycolipids were absent in the permeate (processed oil) whose presence in degummed RBO affects the color in the subsequent processing, posing problem in producing an acceptable quality final product. The color reduction measured in terms of area under the visible spectra (350-550 nm) was to the extent of 50-55%. The membrane process also reduced the wax content to the extent of 40-50%. Hexane-dilution improved the oil flux by one order of magnitude without affecting the selectivity to a greater extent. The results revealed that processing using nonporous membranes could be an effective pretreatment step for achieving the techno-economical benefits of physical refining of CRBO.
机译：已经评估了无孔膜对粗米糠油（CRBO）同时脱胶，脱色和脱蜡的功效。 CRBO的膜处理表明，在工业样品和实验室制备的样品中，磷脂（PL）几乎都被无孔膜完全排斥（> 99％）。膜处理过的米糠油（RBO）样品中的磷含量非常低（<2 ppm），这表明可水化和不可水合的PL均被膜有效地排斥。渗透液（加工油）中不存在其他磷酸糖脂，其脱胶的RBO中的存在会影响后续加工的颜色，从而在生产质量合格的最终产品时造成问题。以可见光谱（350-550nm）下的面积测量的减色程度为50-55％。膜工艺还将蜡含量降低到40-50％的程度。己烷稀释可将油通量提高一个数量级，而不会在更大范围内影响选择性。结果表明，使用无孔膜进行处理可能是实现CRBO物理精制的技术经济效益的有效预处理步骤。

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