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1.
通过采用大孔吸附树脂对海红果黄酮粗提液的静态吸附和解吸试验,从10种大孔吸附树脂中筛选出海红果黄酮纯化的最优树脂,考察了该树脂对诲红果黄酮的静态、动态吸附与解吸性能并对吸附与洗脱的最佳条件进行了研究.结果表明:NKA-9树脂对海红果黄酮有很好的吸附和解吸性能,其最优的动态吸附工艺条件为:上样液pH值为4.0,浓度5.15 mg/mL,上样量为4 BV,流速控制在2 BV/h.最优的解吸工艺条件为:洗脱剂为80%乙醇溶液,洗脱液用量为3 BV,洗脱流速控制在1 BV/h.在此优化条件下,海红果黄酮的吸附率、解析率、收率、纯度的平均值分别达到为(79.39±0.13)%,(84.14±0.11)%,(68.20±0.15)%和(28.81 ±0.06)% (n=5).  相似文献   

2.
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%。  相似文献   

3.
利用大孔吸附树脂分离提取地黄中梓醇。以地黄粗提液中梓醇含量为指标,高效液相色谱(HPLC)为含量测定方法,考察九种不同极性大孔吸附树脂对梓醇的吸附和解吸附性能,筛选出最佳树脂D101进行分离实验。结果表明,D101大孔吸附树脂的静态吸附容量为69.2mg/g干树脂,其吸附等温线符合Langmuir和Freundlich吸附等温式。采用5%乙醇作为洗脱剂,洗脱液减压浓缩后进行硅胶柱层析分离,氯仿:甲醇(8:2)梯度洗脱得到梓醇单体,纯度达90%以上,梓醇得率为6%。  相似文献   

4.
油橄榄叶中橄榄苦苷的分离纯化   总被引:1,自引:0,他引:1  
考察了6种不同大孔树脂对橄榄苦苷的吸附,筛选出吸附选择性好的D101大孔吸附树脂为实验材料.得到的D101大孔树脂的最佳吸附条件:试样上样质量浓度41.06[J].,流速5 mL/min,50%乙醇溶液洗脱,洗脱液用量260mL,树脂可以反复使用.经大孔树脂富集后,橄榄苦苷的纯度可达55%以上,再经葡聚糖凝胶精纯化后,可达76%以上.  相似文献   

5.
通过比较6种不同型号的大孔吸附树脂对家蝇蛋白的吸附解吸特性,发现D101大孔吸附树脂的性能优于其他5种,吸附流速、浓度影响大孔吸附树脂的动态吸附性能。D101大孔吸附树脂对未经诱导的家蝇蛋白的吸附量可达217.18mg/g(以干树脂总量为基准),洗脱率为76.48%。吸附后的大孔吸附树脂用15%、35%、55%的乙醇溶液阶段洗脱,各洗脱组分的疏水性逐渐增大,蛋白质含量也明显增加。用E.coli、S.aureus和B.subtilis对各洗脱组分进行抑菌活性测定,抑菌活性随洗脱组分的疏水性增加而增大。测得55%乙醇洗脱组分的抑菌活性最大,其中对E.coli的抑菌圈直径达5.8mm。  相似文献   

6.
采用聚酰胺吸附树脂对竹笋壳黄酮类化合物分离纯化,确定了聚酰胺吸附树脂对竹笋壳黄酮分离纯化的最佳工艺条件:制备5 mg/mL的竹笋壳黄酮提取液90 mL,调节pH=5,用1.8 mL/min的流速上样后,用160 mL的去离子水冲洗大量杂质,随后用120 mL的60%乙醇溶液洗脱120 mL。在此条件下,竹笋壳黄酮的纯度为58.4%,与大孔树脂纯化方法相比,该方法更具有良好的分离纯化效果。  相似文献   

7.
AB-8大孔吸附树脂对红花桑寄生总黄酮静态吸附和动态洗脱的效果,受提取液质量浓度、pH值及环境温度、振速以及洗脱剂乙醇浓度、流速等因素影响。试验表明,提取液质量浓度和pH值对AB-8树脂的吸附效果有显著影响,其吸附分离总黄酮的工艺条件为:浓度为1.2~2.0mg/ml、pH 3.0~4.0的红花桑寄生提取液,置于摇床上,于室温条件下振荡(振速160r/min)吸附2~3h,然后用5倍于树脂体积(5BV)的50%乙醇以1.5ml/min流速进行柱上动态解吸。AB-8树脂对红花桑寄生总黄酮的饱和吸附量可达29.0mg/g,动态洗脱率达95.0%,获得产品中黄酮纯度为46.0%,得率为5.5%。  相似文献   

8.
吸附法提取分离葛根素的研究   总被引:9,自引:1,他引:8  
用正交试验法对葛根中提取分离葛根素的工艺进行了研究,找出了用吸附法分离葛根素的影响因素依次是吸附剂的选择,洗脱剂乙醇浓度,洗脱剂的用量及吸附剂的用量。把D101大孔吸附树脂用于葛根素的分离,具有收率高,操作简单,成本低,环境污染小等优点,适用于工业化生产。  相似文献   

9.
采用大孔吸附树脂层析结合硅胶柱层析,对环孢菌素A的分离纯化进行研究,确定了最佳层析条件,建立了工业化制备环孢菌素A的工艺。大孔吸附树脂层析选用D101树脂作为吸附介质,提取液丙酮含量控制在50%,最大吸附量为35 mg/g湿树脂,洗脱剂选用丙酮;硅胶柱层析选用42~64μm硅胶作为层析介质,最优层析条件为柱床高径比10∶1,流动相配比V(石油醚)∶V(丙酮)=70∶30,流速80 mL/m in,环孢菌素A上样质量浓度100 g/L,硅胶层析平均收率为84.2%,环孢菌素A纯度可达到97%以上,整个工艺总收率为65%~70%。  相似文献   

10.
从金银花叶茎藤中提取总黄酮并用D-101大孔吸附树脂进行纯化,研究了D-101大孔吸附树脂对总黄酮的吸附及解吸附特性。结果表明,D-101树脂对金银花叶茎藤总黄酮分离纯化的最佳工艺参数为:上样液黄酮浓度0.538 mg/mL,静置吸附时间80 min,料液比1∶5(g∶mL),pH 2,流速为2 mL/min,以60 mL 75%的乙醇溶液洗脱,黄酮解吸率为94.5%,纯化后黄酮纯度为84.5%,是粗提液黄酮含量(16.8%)的5倍。金银花叶茎藤总黄酮在D-101树脂上的吸附等温线符合Langmuir等温吸附方程。吸附热力学参数表明吸附过程为自发、放热过程,吸附动力学可用Pseudo-second-order模型较好地拟合,30℃时其表观吸附速率常数为1.034×10-2g/mg.min。  相似文献   

11.
本文筛选了6种不同性能的吸附树脂,对比了这些树脂对大豆异黄酮的吸附规律。结果表明,以大豆胚为原料,用乙醇提取,经选择性吸附树脂——ADS-21树脂吸附,再用70%的乙醇洗脱,可以得到含量达45%以上的大豆异黄酮提取物,表明ADS-21树脂对大豆异黄酮有良好的吸附选择性。  相似文献   

12.
Chlorogenic acid, one of the most bioactive compounds rich in the Chinese medicinal herb honeysuckle, is a natural antioxidant and serves as anti-inflammatory, anti-tumor, anti-mutagenic and anti-carcinogenic agent. An efficient preparative separation process of chlorogenic acid from honeysuckle crude extracts has been developed in the present study. HPD-850 resin offers the best adsorption capacity, and adsorption and desorption ratios for chlorogenic acid among the nine macroporous resins tested, and its adsorption rate at 25 degrees C fit best to the Langmuir isotherm. The adsorption capacity of HPD-850 resin was found to depend strongly on the pH value of the initial adsorption solution. The dynamic adsorption and desorption experiments have been carried out on a HPD-850 resin packed column to optimize the separation process of chlorogenic acid from honeysuckle crude extracts. After one run treatment with HPD-850 resin, the chlorogenic acid content in the final product was increased 4.46-fold from 11.2% to 50.0%, with a recovery yield of 87.9%. The preparative separation of chlorogenic acid can be easily and efficiently achieved via adsorption and desorption on HPD-850 resin, and the method developed will provide a potential approach for large-scale separation and purification of chlorogenic acid for its wide pharmaceutical use.  相似文献   

13.
Cao  Hanfei  Ji  Yingchun  Zhou  Jingwei  Zhuang  Wei  Niu  Huanqing  Gao  Nan  Chen  Yong  Liu  Dong  Zhu  Chenjie  Chen  Xioachun  Ying  Hanjie  Wu  Jinglan 《Bioprocess and biosystems engineering》2019,42(9):1435-1445

Vanillin and syringaldehyde are widely used as flavoring and fragrance agents in the food products. The potential of a macro-mesoporous adsorption resin was assessed for separation of these binary mixtures. This work focuses on modeling of the competitive adsorption behaviors and exploration of the adsorption mechanism. The characterization results showed the resin had a large BET surface area and specific pore structure with hydrophobic properties. By analysis of the physicochemical properties of the solutes and the resin, the separation mechanism was mainly contributed by hydrophobic effect. Subsequently, the competitive Langmuir isotherm model was used to fit the competitive adsorption isotherms. The pore diffusion coefficient was obtained by macropore diffusion model. Afterwards, a mathematical model was established to predict the breakthrough curves of the binary mixture at various operating conditions. The data and model presented are valuable for design and simulation of the continuous chromatographic separation process.

  相似文献   

14.
吸附树脂分离纯化高麦芽糖浆的研究   总被引:2,自引:0,他引:2  
王遂  梁霆 《生物技术》1995,5(3):19-21
本文提出并研究了吸附树脂分离纯化提高麦芽糖浆的新工艺,选出了较适合的吸附树脂进行了交换柱吸附分离提纯及其再生方法试验。结果表明,WI树脂对超高麦芽糖浆中的低聚糖具有较好的吸附分离效果。在交换柱中进行吸附分离试验时,单批处理量为0.67ml/g树脂时,WI吸附低聚为91.0%以上。  相似文献   

15.
大孔吸附树脂分离虎杖中白藜芦醇的研究   总被引:7,自引:0,他引:7  
目的:采用大孔吸附树脂对虎杖粗提物中白藜芦醇进行初步富集、分离和纯化.方法:考察18种树脂对白藜芦醇的吸附量和解吸率,选择吸附量大、解吸率高的数种树脂进行吸附动力学研究,确定最佳的脱附工艺.结论:HPD-500树脂对白藜芦醇的吸附量可达58.67mg/g,解吸率为92.6%,经大孔吸附树脂的吸附与解吸,白藜芦醇的含量由粗提物中9.25%提高至39.5%.  相似文献   

16.
以不同大孔树脂吸附法固定化假丝酵母99_125脂肪酶,在微水有机相中的应用表明非极性树脂NKA是最佳的固定化载体。分别以正庚烷及磷酸盐缓冲液作为固定化介质,发现在正庚烷介质中树脂NKA的固定化效率能够达到98.98%,与采用磷酸盐缓冲液作为介质相比,固定化酶的水解活力和表观酶活回收率分别提高了4.07和3.43倍。考察了在微水相中固定化酶催化合成生物柴油的催化性能,结果表明,在给酶量为1.92∶1(初始酶粉与树脂的质量比),pH值为7.4,体系水含量为15%(水与油的质量比),反应温度为40℃条件下,固定化酶具有最佳的催化能力;以正庚烷为介质固定化脂肪酶催化合成生物柴油,采用三次流加甲醇的方式,单批转化率最高达到97.3%,连续反应19批以后转化率仍保持为70.2%。  相似文献   

17.
Scutellarin, a flavone glycoside, popularly used in the treatment of heart disease, has been efficiently separated using macroporous resins from crude extracts of Chinese medicinal plant Erigeron breviscapus (vant.) Hand. Mazz. HPD-800 resin offered the best adsorption and desorption capacity for scutellarin among the eight macroporous resins tested, and its adsorption data at 25 degrees C fit best to the Langmuir isotherm. The dynamic adsorption and desorption experiments have been carried out on a HPD-800 resin packed column to optimize the separation process of scutellarin from the crude extracts of E. breviscapus. After one run treatment with HPD-800 resin, the scutellarin content in the product was increased 15.69-fold from 2.61% to 40.96% with a recovery yield of 95.01%. The preparative separation process via adsorption-desorption method developed in this study provides a new approach for scale-up separation and purification of scutellarin for its wide pharmaceutical use.  相似文献   

18.
大孔吸附树脂柱层析分离淫羊藿甙的研究   总被引:3,自引:1,他引:2  
本文通过考察八种大孔吸附树脂对淫羊藿甙的吸附分离性能,筛选出了AB-8树脂作为分离纯化淫羊藿甙的介质。对该树脂的吸附性能研究表明其对浸提物中的淫羊藿甙有良好的吸附选择性,静态饱和吸附容量和动态吸附容量分别为22.97和16.20mg/mL。通过柱层析实验确定了AB-8树脂分离淫羊藿甙的工艺,经一步层析可将淫羊藿甙的纯度从2.78%提高到27%,回收率达97.3%。  相似文献   

19.
Topical treatments of chronic infections with monoclonal antibodies will require large quantities of antibodies. Because plants have been proven capable of producing multisubunit antibodies and provide for large-scale production, they are likely hosts to enable such applications. Recovery costs must also be low because of the relatively high dosages required. Hence, we have examined the purification of a human secretory antibody from corn endosperm extracts by processing alternatives of packed bed and expanded bed adsorption (EBA). Because of the limited availability of the transgenic corn host, the system was modeled by adding the antibody to extracts of nontransgenic corn endosperm. Complete clarification of a crude extract followed by packed bed adsorption provided antibody product in 75% yield with 2.3-fold purification (with antibody accounting for 24% of total protein). The small size of the packed bed, cation-exchange resin SP-Sepharose FF and the absence of a dense core (present in EBA resins) allowed for more favorable breakthrough performance compared to EBA resins evaluated. Four adsorbents specifically designed for EBA operation, with different physical properties (size and density), chemical properties (ligand), and base matrices were tested: SP-steel core resin (UpFront Chromatography), Streamline SP and Streamline DEAE (Amersham Biosciences), and CM Hyper-Z (BioSepra/Ciphergen Biosystems). Of these, the small hyperdiffuse-style resin from BioSepra had the most favorable adsorption characteristics. However, it could not be utilized with crude feeds due to severe interactions with corn endosperm solids that led to bed collapse. UpFront SP-steel core resin, because of its relatively smaller size and hence lower internal mass transfer resistance, was superior to the Streamline resins and operated successfully with application of a crude corn extract filtered to remove all solids of >44 microm. However, the EBA performance with this adsorbent provided a yield of only 61% and purification factor of 2.1 (with antibody being 22% of total protein). Process simulation showed that capital costs were roughly equal between packed and expanded bed processes, but the EBA design required four times greater operating expenditures. The use of corn endosperm as the starting tissue proved advantageous as the amount of contaminating protein was reduced approximately 80 times compared to corn germ and approximately 600 times compared to canola. Finally, three different inlet designs (mesh, glass beads, and mechanical mixing) were evaluated on the basis of their ability to produce efficient flow distribution as measured by residence time distribution analysis. All three provided adequate distribution (axial mixing was not as limiting as mass transfer to the adsorption process), while resins with different physical properties did not influence flow distribution efficiency values (i.e., Peclet number and HETP) when operated with the same inlet design.  相似文献   

20.
以红枣为原料提取红枣黄酮,通过吸附树脂的筛选,探讨树脂吸附的溶液浓度、pH值、吸附时间、吸附液体积对树脂吸附条件的影响。利用Box-Behnken中心组合设计原理,应用响应曲面分析方法,确定了大孔吸附树脂对红枣黄酮最佳吸附条件为:最佳吸附树脂为XDA-8,吸附时间62 min,吸附液浓度为4.3 mg/L,pH值为7.32,吸附液体积为10 mL,最大吸附效率达到85.64%,优化后得实际吸附率为85.51%。  相似文献   

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