【摘要】 以纯化亚麻木酚素粗品为目的,比较了X-5、D101和AB-8三种大孔吸附树脂对木酚素的吸附性能,筛选出X-5大孔树脂最合适。通过动态吸附、解吸实验确定了上样浓度与上样量。在上样浓度10 mg/m L,上样量25 m L时分离效果最佳。同时,重点考察了梯度洗脱和等度洗脱两种解吸方式对木酚素产品纯度和收率的影响。等度洗脱采用30%乙醇水溶液,木酚素纯度可达85.49%,收率为57.59%;采用60%乙醇水溶液洗脱,木酚素纯度为59.30%,收率最高为75.05%。梯度洗脱可得到不同纯度产品,过程总收率为77.63%。更多还原

【Abstract】 This work aimed to purify flaxseed lignans by macroporous adsorption resin.Three macroporous adsorption resins( X-5,D101,and AB-8) were used to adsorption of lignans.The macroporous resin X-5was selected for lignan purification.The sample concentration( 10 mg / m L) and sample loading( 25 m L)were optimized by dynamic adsorption and desorption experiments. This work focused on the effects of different elution methods.The highest purity of 85. 49%( recovery rate 57. 59%) and the highest recovery rate of 75. 05%( purity 59. 30%) were achieved with 60% ethanol solutions as eluent respectively by using isocratic elution. Meanwhile,the gradient elution could obtain a variety of products with different purities,and the total recovery rate was 77. 63%.更多还原