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大孔吸附树脂对莲房原花青素吸附纯化性能的研究 总被引:1,自引:0,他引:1
比较了14种大孔吸附树脂对莲房中原花青素(proanthocyanidins of lotus seedpod,LSPAs)的吸附及解吸性能,在研究静态吸附的基础上,筛选出效果较好的树脂进行动态实验研究,并对所得组分LSPAs含量及其相对分子量进行初步分析.结果表明,DM130大孔吸附树脂分离纯化LSPAs效果最佳,上样浓度为2.5mg/mL,流速为3BV/h时,饱和吸附量为4~4.5个BV;当用体积分数为50%乙醇以3BV/h的流速洗脱5BV时,LSPAs的累积回收率可达96.43%,含量从22.54%提高到95.31%;经质谱分析,(M+H)分子量范围为291.1~1155.3,聚合度≤4. 相似文献
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伊枯草菌素A是一种具有代表性的微生物源两性环脂肽类化合物。采用DA201大孔吸附树脂从枯草芽孢杆菌发酵液中分离提取伊枯草菌素A,考察了不同吸附、解吸条件对其动态吸附性能的影响。结果表明,DA201型树脂对发酵液中伊枯草菌素A的饱和吸附容量可达到3.48mg/g;动态吸附中最佳吸附流速为1BV/h,其吸附率可以达到95.56%;采用95%乙醇作为洗脱剂,以1BV/h的流速洗脱,其洗脱率可以达到92.41%;DA201型树脂是一种从发酵液中分离和提取伊枯草菌素A的较理想的吸附剂。 相似文献
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考察了S-8、AB-8、NKA-II、NKA-9 4种大孔吸附树脂对杜仲内生真菌拟茎点霉属XP-8发酵液中松脂醇二葡萄糖苷(Pinoresinol Diglucoside,PDG)的吸附和脱附性能,筛选出S-8树脂的吸附和脱附性能最好;探讨了S-8树脂在静态吸附条件下对发酵液中PDG的吸附平衡和吸附动力学,考察了温度和pH值对吸附效果的影响;进行了动态吸附实验,确定了最佳吸附和洗脱条件。结果表明,在静态吸附条件下,Langmuir方程可很好地描述PDG在S-8树脂上的吸附平衡,液膜扩散和颗粒内扩散分别是控制吸附初期和后期吸附速率的主要步骤;动态吸附的最佳条件是,上样浓度为0.195mg/mL、上样温度为20℃、pH 9、进样流速1BV/h,溶液处理量20BV;最佳动态洗脱条件是,洗脱液为30%的乙醇水溶液,洗脱液流速1BV/h,用量为6BV。整个动态吸附洗脱过程结束后的PDG得率为89.8%。 相似文献
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采用单因素实验法,考察了3种树脂对有机二胺吸收剂PA-A水溶液中SO42-的动态吸附-解吸性能,优化了树脂动态吸附-再生工艺.结果表明,D296型树脂具有良好的吸附选择性和较高的吸附容量;当流速为8.08BV/h、高径比为5.64、初始SO42-浓度为96.94g/L时,D296型树脂对PA-A水溶液中的SO42-动态饱和吸附量可达430.06mg/g干树脂;采用4% NaOH水溶液在4.04BV/h的流速下对吸附饱和的树脂进行洗脱,再生率可达95%左右;树脂重复使用10次后其吸附-解吸性能基本不变. 相似文献
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考察了HPD-826、HPD-417、ADS-17、HPD-722、HPD-450、AB-8、HPD-600、D-101,共8种大孔树脂对藏药白花龙胆花总黄酮的吸附和解吸性能,通过静态吸附量和解吸附率及静态吸附曲线的绘制,筛选出AB-8树脂的效果最佳;以AB-8树脂为目标,进行了动态吸附实验,考察了上柱液浓度、pH值、上柱液流速、乙醇浓度、解吸剂流速、解吸体积等对AB-8树脂吸附和解吸效果的影响,确定出AB-8树脂动态吸附白花龙胆花总黄酮的最佳条件:上柱液浓度为6.5mg/mL,pH为3.79,上柱流速4BV/h;最佳洗脱条件:用50%乙醇进行洗脱,解吸流速为3BV/h,解吸体积4BV。在此条件下,白花龙胆花总黄酮纯度由原来的22.10%,变为65.75%,产品精制倍数为65.75%/22.10%=2.97,表明AB-8树脂可用于白花龙胆花总黄酮的分离纯化。 相似文献
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大孔树脂分离纯化楮果总黄酮优化工艺研究 总被引:1,自引:0,他引:1
筛选适合分离纯化楮果总黄酮的大孔树脂并确定最优工艺条件。以静态吸附率和解吸率为指标对8种大孔树脂进行筛选,确定D101树脂的分离纯化效果最佳。通过动态吸附实验考察上样流速、上样溶液pH值、上样溶液浓度、乙醇浓度、洗脱流速、洗脱剂用量等工艺条件对分离纯化效果的影响,确定最优工艺条件如下:上样流速为2BV/h,pH值为6,上样溶液浓度为0.05mg/mL,80%乙醇作洗脱剂,洗脱流速为5BV/h,洗脱剂用量为7.5BV。采用最优工艺条件,楮果总黄酮含量提高至22.26%,产品精制倍数为4.79,表明D101树脂能有效纯化楮果总黄酮。 相似文献
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研究了从山楂叶中纯化熊果酸的柱层析工艺。静态吸附结果表明,X-5、NKA和AB-8树脂的吸附率分别为91.32%,72.28%和41.19%;以90%乙醇为洗脱剂,X-5、NKA和AB-8树脂的洗脱率分别为83%,70%,87%。静态实验表明X-5树脂具有较好的吸附解吸性能。动态实验优化了在X-5树脂中的流速、上样液的熊果酸浓度和上样体积。结果表明,流速为3BV/h(BV为倍量体积),上样液的熊果酸浓度为0.304mg/mL,上样体积为3BV为最优上样条件。动态洗脱中采用梯度洗脱方式,结果表明在90%的乙醇洗脱下,熊果酸纯度达93.21%。对层析工艺制备的熊果酸进行结晶处理,所获得的熊果酸纯度为98.61%,与熊果酸标准品的红外光谱一致。 相似文献
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大孔吸附树脂分离纯化异甘草素的研究 总被引:1,自引:2,他引:1
研究大孔吸附树脂分离纯化异甘草素的工艺条件及参数。通过研究HPD-600、D4020、D101、AB-8、NKA-II、AL-2和NKA-9树脂对异甘草素的吸附和解吸附能力,筛选最佳树脂为AB-8,并研究了其对异甘草素的吸附和解吸附性能,确定了最佳的吸附与解吸附工艺参数,吸附:pH=5,室温,流速1.5BV/h,溶液处理量为5BV;脱附:洗脱剂为70%的乙醇溶液,流速1BV/h,洗脱剂用量4.5BV。异甘草素样品溶液经AB-8树脂吸附与脱附后回收率为76.7%,纯度由2.02%提高到29.1%,提高了14.4倍。实验结果表明,AB-8树脂对异甘草素的吸附量大,脱附容易,可以应用于异甘草素的分离纯化。 相似文献
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In present study, the performance and separation characteristics of 21 macroporous resins for the enrichment and purification of deoxyschizandrin and γ-schizandrin, the two major lignans from Schisandra chinensis extracts, were evaluated. According to our results, HPD5000, which adsorbs by the molecular tiers model, was the best macroporous resin, offering higher adsorption and desorption capacities and higher adsorption speed for deoxyschizandrin and γ-schizandrin than other resins. Columns packed with HPD5000 resin were used to perform dynamic adsorption and desorption tests to optimize the technical parameters of the separation process. The results showed that the best adsorption time is 4 h, the rate of adsorption is 0.85 mL/min (4 BV/h) and the rate of desorption is 0.43 mL/min (2 BV/h). After elution with 90% ethanol, the purity of deoxy-schizandrin increased 12.62-fold from 0.37% to 4.67%, the purity of γ-schizandrin increased 15.8-fold from 0.65% to 10.27%, and the recovery rate was more than 80%. 相似文献
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Optimization of luteolin separation from pigeonpea [Cajanus cajan (L.) Millsp.] leaves by macroporous resins 总被引:1,自引:0,他引:1
In the present study, the performance and separation characteristics of eight macroporous resins for the separation of luteolin (LU) from pigeonpea leaves extracts have been evaluated. The adsorption and desorption properties of LU on macroporous resins including AB-8, NKA-9, NKA-2, D3520, D101, H1020, H103 and AL-2 have been compared. AL-2 resin offers the best adsorption and desorption capacity for LU than other resins based on the research results, and its adsorption data at 25 degrees C fit best to the Freundlich isotherm. Dynamic adsorption and desorption experiments have been carried out with the column packed by AL-2 resin to optimize the separation process of LU from pigeonpea leaves extracts. The optimum parameters for adsorption were sample solution LU concentration 65.5 microg/ml, pH 5, processing volume 3 BV, flow rate 1.5BV/h, temperature 25 degrees C; for desorption were elution solvent ethanol-water (50:50, v/v) 2 BV and followed by ethanol-water (60:40, v/v) 2 BV, and flow rate 1BV/h. After treated with AL-2 resin, the LU content in the product was increased 19.8-fold from 0.129% to 2.55%, with a recovery yield of 78.54%. The results showed that AL-2 resin revealed a good ability to separate LU. Therefore, we conclude that results in this study may provide scientific references for the large-scale LU production from pigeonpea or other plants extracts. 相似文献
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大孔吸附树脂分离纯化金银花中黄酮类物质的研究 总被引:3,自引:0,他引:3
比较了AB-8、S-8、NKA-9和D-101 4种大孔吸附树脂对金银花提取液中黄酮类物质的吸附及解吸附性能.在静态吸附试验基础上,筛选出效果较好的D-101树脂进行动态试验研究,结果表明,D-101树脂在30℃下对金银花黄酮类物质的静态吸附-动态解吸较优的工艺参数为:上样液pH值2.46,解吸液为95%乙醇,解吸液的流速为3mL/min,pH值11,4.5BV解吸液即可完全洗脱被树脂吸附的黄酮类物质,其解吸率高达98.00%.在试验研究范围内,树脂吸附金银花黄酮是自发性放热过程,并且符合Langmuir方程,此外树脂对黄酮的吸附动力学可用Pseudo-second-order模型较好地拟合,其表观吸附速率常数为Kso℃=3.43×10-2g/(mg·min). 相似文献
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X-5 resin, with higher adsorption and easier desorption of naringin, was selected from five kinds of macroporous resins through
static adsorption and desorption experiments. Effects of concentration, pH value, and flow rate of naringin extract on the
adsorption of naringin by X-5 resin were studied. Meanwhile, the effect of these factors on the desorption of naringin from
X-5 resin was also investigated. The experimental results show that the adsorption isotherm of naringin by X-5 resin can be
described by the Langmuir isotherm equation. The static maximum adsorption capacity of naringin is 32.6 mg/g with naringin
concentration at 2.7 g/L, while the dynamic adsorption capacity of naringin is 23.8 mg/g with naringin extract flow rate at
two times that of resin volume per hour. The optimal eluant is 60% (v/v) ethanol-water with pH value of 10. The desorption
ratio will rise to more than 85% when the flow rate of this optimal eluant is one to two times that of resin volume per hour.
Translated from Journal of Central South University (Science and Technology) 相似文献
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用离子交换树脂法吸附柠檬酸溶液中的金属离子,苯乙烯系阳离子交换树脂的吸附性能较好,它对镍、铝离子的吸附容量均较大,且吸附前后柠檬酸溶液的浓度变化较小.静态条件下树脂对镍的吸附容量为16.83mg Ni/g干树脂,对铝为21.36mg Al/g干树脂;动态条件下树脂对镍的吸附容量为6.78mg Ni/g干树脂,对铝为31.8mgAl/g干树脂,吸附液流速为1m/h~3m/h.吸附后的柠檬酸溶液可循环使用.当用1mol/L硫酸解吸时,树脂对镍铝的解吸率可达90%以上.当硫酸中Ni2 为1.70mmol/L,Al3 为7.40mmol/L时,树脂的解吸率仍可达80%以上. 相似文献
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研究了酚醛型吸附树脂在水体系中对吡啶和N,N-二甲基苯胺的静态和动态吸附行为.结果表明,在水中树脂对吡啶和N,N-二甲基苯胺的吸附主要以疏水吸附机理进行;吸附吡啶和N.N-二甲基苯胺的初始阶段,即达到38.3~48.9%平衡吸附时,吸附速率数据和半经验速率方程很吻合:酚醛型吸附树脂等温吸附吡啶和N,N-二甲基苯胺的平衡吸附数据符合Langmuir方程,相关系数在0.99以上,酚醛型吸附树脂吸附吡啶和N,N-二甲基苯胺属单分子层吸附:用80%的乙醇溶液作洗脱剂来洗脱吸附吡啶已达饱和的JDW-2树脂,效果是很理想的.在3.6个床体积内洗脱率达91.52%,4.8个床体积内洗脱率达到94.85%。表明酚醛型吸附树脂具有优良的洗脱性能. 相似文献
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邻硝基苯甲醚生产废水预处理工艺的研究 总被引:3,自引:0,他引:3
采用"酸化-树脂吸附"法对邻硝基苯甲醚生产废水进行预处理研究。比较了XAD-4、NDA-88、NDA-99、NDA-150几种树脂对酸化后废水中邻硝基苯酚的静态吸附行为,并选用吸附量较大的NDA-150树脂对该废水进行了吸附及脱附研究。结果表明,pH为4时,NDA-150树脂的平衡吸附量4.38mmol/g。动态吸附处理量为40BV(树脂体积)时,酚去除率95%,以8%NaOH为脱附剂,温度333K,脱附率98%。该工艺CODCr总去除率92%,邻硝基苯酚总去除率99%,每升废水可回收邻硝基苯酚10.8g,纯度大于97%。 相似文献