大孔树脂纯化茶皂素的工艺研究

采用静态吸附实验考察了D-101、DM-301、AB-8、D001、D201、D113、D202等大孔树脂对茶皂素的纯化效果,并考察了上样速度、溶剂体积、上样液质量浓度对大孔树脂AB-8动态吸附率的影响以及洗脱液浓度、洗脱速度、洗脱剂体积对动态洗脱率的影响。大孔吸附树脂AB-8纯化茶皂素的最佳工艺条件为:上样液浓度为27 mg/mL,流速为2.5 mL/min,洗脱剂为75%乙醇,用量为上样液体积的2倍,洗脱速度为2.5mL/min,可以得到纯度为85.7%的茶皂素。     

大孔树脂纯化茶皂素的工艺研究

采用静态吸附实验考察了D-101、DM-301、AB-8、D001、D201、D113、D202等大孔树脂对茶皂素的纯化效果,并考察了上样速度、溶剂体积、上样液质量浓度对大孔树脂AB-8动态吸附率的影响以及洗脱液浓度、洗脱速度、洗脱剂体积对动态洗脱率的影响。大孔吸附树脂AB-8纯化茶皂素的最佳工艺条件为:上样液浓度为27 mg/mL,流速为2.5 mL/min,洗脱剂为75%乙醇,用量为上样液体积的2倍,洗脱速度为2.5mL/min,可以得到纯度为85.7%的茶皂素。     

不同类型大孔吸附树脂富集皂角刺总黄酮的效果研究

采用静态吸附方法从7种大孔吸附树脂中选择出最佳树脂,采用动态吸附的方法选择出分离皂角刺总黄酮的最佳工艺。结果 AB-8大孔吸附树脂对皂角刺中总黄酮分离纯化效果较好;最佳工艺条件为:0. 2 g/mL的皂角刺提取液、2 mL/min的上样流速、洗脱剂为70%的乙醇溶液、2 mL/min的洗脱流速。故采用AB-8大孔吸附树脂分离纯化皂角刺总黄酮,其含量可达到62. 5%。     

大孔吸附树脂分离纯化马缨丹总黄酮的工艺研究

探讨大孔吸附树脂纯化马缨丹总黄酮的最佳工艺,通过对4种型号大孔树脂的静态实验,筛选出最佳树脂;考察最佳树脂对马缨丹总黄酮的吸附及洗脱性能,优化工艺参数。结果表明:AB-8为最佳树脂,其最佳工艺条件为:上样液质量浓度0.198 mg/mL,吸附流速为2.0 mL/min,吸附pH为4.0;洗脱剂为70%乙醇,洗脱用量5 BV,减压浓缩得马缨丹总黄酮浸膏,纯度为32.45%。     

中极性大孔吸附树脂分离纯化菊米总黄酮

比较了8种大孔吸附树脂D101、AB-8、NKA-9、D4020、S-8、200702、H103、NKA-Ⅱ对菊米总黄酮的吸附性能,以大孔吸附树脂对菊米总黄酮的吸附率、洗脱率为评价指标,筛选出合适的大孔吸附树脂分离纯化菊米总黄酮,并以静态实验、动态试验考察大孔树脂对菊米总黄酮的分离纯化效果及影响因素,优化吸附和解吸条件。结果表明:200702中极性树脂分离纯化菊米总黄酮效果较好,其最佳吸附工艺为:上样液pH 5~6,质量浓度0.35 mg?mL-1,上样液流速3.0 mL?min-1,最佳洗脱工艺为:70%乙醇溶液30 mL,洗脱速率2.5 mL?min-1,通过本工艺菊米总黄酮纯度达83.5%。     

丹参总酚酸纯化工艺研究

目的:优化并确定丹参总酚酸大孔树脂纯化的最佳工艺。方法:以丹参酚酸B含量为考察指标,对大孔树脂纯化工艺参数进行了考察。结果:研究确定大孔吸附树脂最佳工艺条件为:选用AB-8树脂,以10倍药材量,30%乙醇作为洗脱溶媒,洗脱速度以1m L/min为宜,丹参样品上样浓度为0.5g生药/m L,吸附流速以1m L/min,最大上柱体积为60m L为宜。结论:大孔树脂吸附法是丹参总酚酸纯化工艺的有效方法。     

大孔树脂在苦瓜皂甙提取纯化中的应用研究

研究了大孔吸附树脂在苦瓜皂甙提取纯化工艺中的应用.得到的最佳工艺条件:选用AB-8型大孔吸附树脂,在pH为8～9,浸提液与树脂料液比为8:1,吸附60 min,再用70%的乙醇溶剂作为洗脱液进行洗脱,洗脱液与树脂体积比为8:1,洗脱时间为40 min,收集洗脱液,然后浓缩干燥,就可得纯净的苦瓜皂甙.     

大孔吸附树脂对喜树叶中喜树碱的纯化工艺研究

研究通过静态吸附/解吸实验对大孔吸附树脂进行筛选,优选AB-8大孔吸附树脂作为层析柱填料,并对其进行喜树碱纯化工艺研究;研究表明AB-8树脂对喜树碱的静态吸附率为95.31%;体积分数95%的乙醇静态解吸率为92.4%;最佳吸附条件为:上样液质量浓度为0.175mg/mL,上样液不调pH值,吸附流速为2BV/h,平衡吸附5h;最佳洗脱条件:体积分数95%乙醇,洗脱流速1BV/h,洗脱体积为8BV。在该工艺条件下,洗脱物中喜树碱质量分数为7.43%,洗脱率为83.1%。     

地黄有效成分梓醇的分离纯化工艺研究

用大孔树脂分离纯化地黄提取物中有效成分梓醇,考察了4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AB-8进行分离实验,考察最佳上样量、吸附时间以及洗脱溶剂。结果表明,地黄提取物中梓醇的分离纯化最佳工艺条件是:上样量171 mg/g树脂,吸附时间为0. 5 h,用不同乙醇浓度进行梯度洗脱,得到梓醇粗品,含量达64. 82%。     

大孔树脂对5-羟基色氨酸的吸附研究

筛选适合分离纯化加纳籽中5-羟基色氨酸的树脂,并确定最佳工艺。以5-羟基色氨吸附量和回收率为指标,制定吸附等温线和研究树脂静态吸附动力学,确定大孔树脂型号;动态吸附分离法确定分离条件。对6种树脂进行考察,其中AB-8型大孔吸附树脂对5-羟基色氨酸具有良好的吸附分离性能,其初步分离纯化工艺条件：以浓度10.5mg/mL的样品动态吸附,以50%的乙醇为解吸剂,洗脱流速1.5BV/h,回收率98.79%。结果表明,AB-8型大孔吸附树脂适合分离纯化5-羟基色氨酸,该方法操作简便,利于实际的生产。     

白鹤藤总皂苷提取条件蹬优化

采用单因素实验设计优选白鹤藤总皂苷的超声波乙醇浸提法提取条件,白鹤藤中所含有的总皂苷经5％香草醛-冰醋酸和高氯酸（1：4）混合液处理后显色,用分光光度法在波长445nm处测定吸光值。最终确定白鹤藤总皂苷的最佳超声波乙醇浸提提取条件为：以75％乙醇为提取剂,温度75℃,超声波浸提提取时间45min,料液比1：20,超声波功率100MHz。用本法提取白鹤藤总皂苷经济简便无污染。     

大孔树脂分离富集匙羹藤总皂苷研究

采用大孔树脂对匙羹藤总皂苷进行分离富集.考察了5种树脂对匙羹藤总皂苷的静态吸附效果并筛选出D101树脂用于分离富集匙羹藤总皂苷,通过动态吸附性能考察,确定了D101树脂固定床分离富集匙羹藤总皂苷的工艺条件,在ρ(总皂苷)=5 mg/mL,pH=6,料液以1.0 mL/min的流速通过D101树脂固定床进行吸附,分别用去...     

微波辅助乙醇-K_2 HPO_4双水相提取黄姜总皂苷

采用微波辅助乙醇-磷酸氢二钾双水相体系从黄姜中提取总皂苷。以正交实验法研究了提取条件对总皂苷提取率的影响,确定了最佳提取条件：黄姜粉末颗粒大小为80目,微波功率为390 W,微波辐射时间为5 min。在最佳条件下,总皂苷提取率达13.32%。     

酶法提取无患子皂苷的工艺研究

采用酶法提取无患子皂苷,研究了酶的类型对无患子皂苷提取的影响,并通过正交实验优化酶法提取工艺。结果表明,纤维素酶有助于无患子皂苷的提取,酶提法的较优工艺条件为:纤维素酶用量为无患子粉末质量的0.1%,酶提时间2.5 h,酶提温度50℃,pH值4.7。此时,无患子皂苷的提取率达到86.59%,比未加酶处理时提高了19.63%。     

微波法提取鲜黄姜总皂苷的工艺研究

采用微波法提取鲜黄姜总皂苷。通过单因素实验和正交实验确定最佳提取条件为：液料比15：l（mL：g）、酸解时间2．0h、微波功率400W、微波提取时间4min,在此条件下,总皂苷提取率达到0．26％。与传统提取法相比,微波提取法具有高效、节能、省时、操作简单等特点,适于工业化生产。     

Recovery of Saponins from Jua (Ziziphus joazeiro) by Micellar Extraction and Cloud Point Preconcentration

Juá (Ziziphus joazeiro) is a Brazilian plant and its bark has been used as a detergent and phytotherapic due to its high saponin content (2–10 %). Saponins are triterpenic glycosides with some properties that aid their use in food, cosmetic and pharmaceutical industries. The object of the present work was to develop an extraction and concentration process of saponins from jua bark, using green solvents such as water and ethanol. Firstly, the extraction conditions optimization was carried out using a central composite design, and compared with other methods such as Soxhlet, ultrasound-assisted extraction and micellar extraction. Then, cloud point preconcentration was tested to select the salt type and its concentration which promotes a higher concentration factor and partition coefficient at room temperature. Finally, the removal of a t-octyl phenol ethoxylate (9–10 EO) nonionic surfactant by adsorption was evaluated by optimizing the adsorbent type and its concentration, temperature and time of adsorption, in addition to the adsorbent recycling. Orbital shaker extraction leads to a recovery of 45.6 % saponins under the following conditions: temperature, 38.8 °C; jua/solvent ratio, 0.272; stirring speed, 300 rpm; extraction time, 2 h. Under these conditions, saponins recovery reached 90.8 % when using 15 % v/v of the nonionic surfactant, and a preconcentration factor of 14.2 was obtained by adding sodium carbonate 20 % w/v. The preconcentration factor decreased to a value of 10.1, after nonionic surfactant removal by a hydrophobic crosslinked polystyrene copolymer resin.     

Use of micellar extraction and cloud point preconcentration for valorization of saponins from sisal (Agave sisalana) waste

Sisal (Agave sisalana) is the main hard fiber produced worldwide, with an estimated generation of 400 thousands t in 2011. From its leaves, only the hard fibers, which represent 3–5% of their weight, are removed. The remaining 95–97% is referred to as sisal waste and contains steroidal saponins that can be potentially used in foods, cosmetics and pharmaceuticals formulations, as well as for soil bioremediation. The present work aimed at to evaluate strategies for the extraction and concentration of saponins from sisal waste, focused on the use of clean solvents, such as water and ethanol. For this purpose, it was firstly performed a central composite rotatable design for the optimization of the extraction conditions followed by a comparison of this strategy with other methods (Soxhlet, ultrasound-assisted extraction and micellar extraction). Cloud point preconcentration was then tested, using several types and concentrations of salts. The use of orbital shaker extraction (200 rpm) with an ethanolic solution (30%, v/v) at 50 °C, a mass/volume ratio sisal/solvent of 0.17 (g/mL) for 4 h allowed a recovery of 38.6% of the saponins. When a micellar extraction strategy using 7.5% (v/v) of Triton X-100, under the above-mentioned conditions was performed, saponins recovery raised to 98.4%. In a subsequent step, the addition of 20% (m/v) sodium carbonate led to a preconcentration factor of 20.3. The best adsorbent for Triton removal from the preconcentrated solution was Amberlite FPX-66. The process strategy proposed in the present study showed to be efficient for saponins extraction and preconcentration from a low-cost, highly available agricultural waste.     

Extraction and Fermentation‐Based Purification of Saponins from Sapindus mukorossi Gaertn.

In the present study, the extraction and purification of saponins from Sapindus mukorossi Gaertn. were examined for effective utilization of the saponin resource. Saponins were extracted from S. mukorossi Gaertn. using water. The conditions of the water extraction process, including extraction temperature, extraction time, number of times of extraction, and solvent‐material ratio were optimized. The yield of total Sapindus saponins (TSS) from the pericarp was 33.41 % and its purity in the extract was 45.71 %. The saponin solution was further concentrated to 1/6–1/7 of its original volume, and dried yeast BV818 that adapted to the concentrated Sapindus saponins solution (SW) was screened. The activation conditions, inoculum amount, fermentation temperature, and fermentation period were optimized. By using the dried yeast under optimized conditions, the purity was increased to 75.50 %. The yield of the byproduct ethanol was 5.33 % (w/v), while the content of TSS in the final product decreased from 18.29 to 15.30 % (w/v). These results could contribute to the development of industrial‐scale production of Sapindus saponins.     

琥珀酸二辛酯磺酸钠对海星皂苷在超临界CO2中的增溶作用

利用琥珀酸二辛酯磺酸钠(AOT)/混合醇/水溶液为助溶剂,以乙醇助溶剂为参照,考察了表面活性剂对海星皂苷在超临界CO2介质中的增溶作用。探讨了表面活性剂浓度、助表面活性剂组成、复合表面活性剂配比等因素对海星皂苷增溶的影响,结果表明:摩尔比为4∶1、浓度为0.05 moL/L的AOT/辛基酚聚氧乙烯醚(OP-10)复配表面活性剂,对海星皂苷具有良好的选择性增溶作用,海星皂苷的萃取率为2.40%,提取物中海星皂苷质量分数为58.99%,分别是使用乙醇助溶剂的4.08、2.18倍。     

超临界CO_2萃取海星皂甙

用正交实验法,通过方差分析,建立并优化了超临界CO2/表面活性剂萃取海星皂甙的工艺。在以浓度为0.075 moL/L的二辛酯琥珀酸磺酸钠(AOT)/辛基酚聚氧乙烯醚(TX-10)组成的复合表面活性剂的正丁醇/乙醇/水多元溶液为助溶剂,萃取压力30 MPa,萃取温度333 K,萃取时间2 h,采取两级分离,分离器(1)的温度为328 K,压力15 MPa,分离器(2)的温度为338 K,压力5 MPa的优化工艺条件下,海星皂甙的萃取率为1.33%,萃取物中海星皂甙质量分数为59.01%,溶血指数为19 231。与乙醇〔w(CH3CH2OH)=85%〕萃取相比,超临界CO2萃取海星皂甙的萃取率提高到1.2倍,质量分数提高到2.0倍,溶血指数提高到1.5倍,所萃取的海星皂甙具有显著的细胞毒性,充分体现了超临界CO2萃取的“绿色”特性。