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以栾树叶多酚提取物为原料,比较了7种大孔树脂对栾树叶多酚的静态吸附与解吸效果,结果表明AB-8树脂性能最佳,其24h静态吸附量为13.74mg/g,解吸率为98.35%,3h内达到吸附平衡与解吸平衡。AB-8树脂动态吸附较佳条件为上样液质量浓度为4g/L,上样液pH值为6,在此条件下吸附率为88.21%,动态洗脱较佳条件为洗脱剂乙醇体积分数为60%,洗脱速度为1mL/min,解吸率达到89.91%,在该条件下栾树叶总多酚经AB-8树脂纯化后,质量分数由50.36%增加到72.37%,回收率为86.83%。 相似文献
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以茶条槭叶为原料碱水解提取没食子酸,通过静态吸附和解吸实验对7种大孔吸附树脂进行筛选,采用筛选出来的XDA-8树脂进行纯化工艺研究。结果表明:XDA-8树脂是7种树脂中最合适的纯化树脂,最佳纯化工艺为,上样液pH=3,上样流速3 mL/min,洗脱剂最适宜的浓度、pH和用量分别为80%乙醇,pH≤1和3 BV(倍柱体积)。经XDA-8大孔吸附树脂纯化后所得产物没食子酸含量为25.878%较提取液中没食子酸含量12.483%有所提高,但纯化效果不显著。 相似文献
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黄酮类化合物是在植物中分布非常广泛的一类天然产物,具有多种生物活性。大孔吸附树脂纯化是一项不需复杂设备、操作条件温和的新型分离技术。综述了大孔吸附树脂分离纯化黄酮类化合物的研究进展。 相似文献
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研究大孔吸附树脂分离纯化番石榴叶总皂苷的工艺条件.番石榴叶用70%乙醇回流提取后,上D101型大孔树脂,水洗后分别用30%,50%,70%乙醇洗脱,以番石榴叶总皂苷的洗脱率为指标,考察大孔树脂分离纯化番石榴叶总皂苷的吸附性能和洗脱参数.番石榴叶总皂苷主要富集于30%、50%乙醇洗脱液部分,大孔吸附树脂的吸附容量为17.53 mg·g-1,洗脱率达70.42%,而50%乙醇洗脱时总皂苷纯度可达55.68%,优选洗脱条件为用水洗去水溶性杂质,50%乙醇洗脱总皂苷. 相似文献
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大孔树脂分离纯化核桃青皮总黄酮的研究 总被引:3,自引:0,他引:3
以总黄酮回收率为考察指标,研究了大孔树脂分离纯化核桃青皮总黄酮的工艺。结果表明:D101型树脂对核桃青皮总黄酮有较好的吸附分离性能,是分离纯化核桃青皮总黄酮的适宜大孔树脂;最佳工艺条件为:上柱总黄酮与干树脂质量比为1:12,上样液质量浓度可在3.0875~6.175 g/L 范围内,pH值为5, 6BV(1BV=23.7 mL)的水洗后用5BV的70%乙醇洗脱。经D101处理后的核桃青皮总黄酮回收率在60%,纯度可达80%以上。该工艺简便,能有效分离纯化核桃青皮黄酮类化合物。 相似文献
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LC Zhao Y He X Deng XH Xia J Liang GL Yang W Li H Wang 《International journal of molecular sciences》2012,13(6):7607-7616
In this work, a rapid extraction method based on ultrasound-assisted extraction (UAE) of syringin from the bark of Ilex rotunda Thumb using response surface methodology (RSM) is described. The syringin was analyzed and quantified by high performance liquid chromatography coupled with UV detection (HPLC-UV). The extraction solvent, extraction temperature and extraction time, the three main factors for UAE, were optimized with Box-Behnken design (BBD) to obtain the highest extraction efficiency. The optimal conditions were the use of a sonication frequency of 40 kHz, 65% methanol as the solvent, an extraction time of 30 min and an extraction temperature of 40 °C. Using these optimal conditions, the experimental values agreed closely with the predicted values. The analysis of variance (ANOVA) indicated a high goodness of model fit and the success of the RSM method for optimizing syringin extraction from the bark of I. rotunda. 相似文献
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大孔吸附树脂分离纯化银杏叶总黄酮的研究 总被引:2,自引:0,他引:2
利用4种大孔吸附树脂分离纯化银杏叶总黄酮.结果表明,HPD100型大孔吸附树脂最适合分离纯化银杏叶总黄酮,该树脂的静态饱和吸附量(以干树脂计)为63.8 mg·g-1,静态洗脱率为91.2%,动态饱和吸附-洗脱量为14.0 mg·g-1,洗脱剂为70%乙醇,洗脱剂用量为4倍树脂体积,树脂可重复使用7个周期. 相似文献
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大孔吸附树脂纯化石榴皮多酚 总被引:4,自引:0,他引:4
从D3520、D4020、AB-8、D140、D141、D160、DM-301、DA-201、SAD-7和D101大孔吸附树脂中筛选出D141树脂,研究了其对石榴皮多酚的静态与动态吸附和解吸性能。结果表明,D141树脂对石榴皮多酚的饱和吸附量为19.86 mg/g(干树脂),吸附等温线符合Langmuir方程,饱和吸附时间为5 h,适宜解吸剂为体积分数70%的乙醇溶液;以质量浓度9 mg/mL的石榴皮提取液上柱,流速为1.8~2.0 BV/h时,树脂的多酚穿透吸附容量为39.42 mg/g(干树脂),2.5 BV体积分数70%的乙醇溶液可将吸附于柱上的石榴皮多酚完全洗脱。以该条件纯化石榴皮多酚提取物时,纯化样的收率为15.4 g/100 g(石榴皮),多酚质量分数从34%提高到76.34%。 相似文献
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通过大孔吸附树脂对申嗪霉素发酵滤液静态吸附和解吸试验,从6种大孔吸附树脂中筛选出分离纯化申嗪霉素最优的树脂,考察了该树脂对申嗪霉素的静态、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:AB-8树脂对申嗪霉素有很好的吸附和解吸性能,其最优的动态吸附工艺条件为:上样液浓度3 000μg/mL,上样量4 BV,上样流速2 BV/h;最优的解吸条件为:洗脱剂为80%乙醇溶液,洗脱液用量3 BV,洗脱流速1 BV/h。在此优化条件下,申嗪霉素的吸附率、解吸率、收率、纯度的平均值分别达到(90.33±0.14)%、(90.87±0.12)%、(82.1±0.1)%和(90.74±0.14)%(n=5)。 相似文献
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《分离科学与技术》2012,47(12):1838-1847
Defatted seed meals, the byproducts of Indian mustard seed oil industry, which are just used as animal feedstock and nitrogen fertilizers, possess various nutrients and phytochemical compounds, such as sinigrin and gluconapin. The present study demonstrated a novel, low-cost, and efficient method for the co-production of sinigrin and gluconapin from defatted Indian mustard seed meals by D261 strong basic anion-exchange macroporous resin and medium pressure liquid chromatography (MPLC). The adsorption/desorption capacities of eight adsorbents characterized by BET, IR, and EDS were screened. 26.4 g defatted Indian mustard seed meals, which contained about 1210.3 mg sinigrin and 696.6 mg gluconapin, could produce 2059.6 mg of glucosinolate-rich extract of 53.67% sinigrin and 31.30% gluconapin after separation by D261 resin. Then, 949.40 mg of 97% sinigrin and 568.40 mg of 95% gluconapin could be obtained after the extracts were purified by MPLC, with the recovery of 76.03% of sinigrin and 77.38% of gluconapin. The products were assessed by analytical HPLC and characterized by UV, MS, 1H NMR, and 13C NMR. In conclusion, this method is practical and environmentally friendly, and it is a low-cost process to make full use of Indian mustard seeds. 相似文献
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《分离科学与技术》2012,47(7):1055-1062
Preparative enrichment and separation of Glycyrrhetinic acid monoglucuronide (GAMG) from the pretreated fermentation broth of glycyrrhizin was studied by using six macroporous resins with different physical and chemical properties. D101 resin showed the maximum effectiveness among the tested resins. The solute affinity towards D101 resin at different temperatures was described in terms of Langmuir and Freundlich isotherms, and the equilibrium experimental data were well-fitted to the two isotherms. The dynamic adsorption and desorption tests were carried out in order to optimize the operational parameters for the efficient separation of GAMG. After one run treatment with D101 resin, the contents of GAMG in the product were increased to 8.2-fold with recovery yields of 93.3%. The process achieved easy and effective enrichment and separation of GAMG with D101 resin, and it could be applied for the large-scale preparation of GAMG from the fermentation broth of glycyrrhizin. 相似文献
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以总黄酮的吸附量、回收率及解吸率为考察指标,研究了大孔吸附树脂分离纯化追风伞总黄酮的工艺条件。通过静态吸附实验比较了7种不同类型大孔吸附树脂的吸附特性,确定了D101型大孔吸附树脂用于追风伞总黄酮的纯化富集。通过动态吸附实验,确定了D101型大孔吸附树脂分离纯化追风伞总黄酮的最佳工艺条件为:上样液浓度1.839 mg.mL-1,上样流速为2.0 mL.min-1,洗脱剂为70%乙醇,洗脱剂用量为6 BV。在此条件下,D101型大孔吸附树脂对追风伞总黄酮的动态饱和吸附量为80.05 mg.g-1,纯化后追风伞总黄酮的纯度达到86.2%。D101型大孔吸附树脂可以较好地分离纯化追风伞总黄酮。 相似文献