共查询到19条相似文献,搜索用时 140 毫秒
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以人血清白蛋白为固定相的分子生物色谱分析几种中药活性成分的研究 总被引:11,自引:0,他引:11
提出用人血清白蛋白分子生物色谱分析中药活性成分的方法,分别比较了当归等4种单味中药的分离结果,考察了提取当归的3种溶剂及提取时间对活性物质提取量的影响,同时建立了当归中阿魏酸与藁本内酯的定量分析方法. 相似文献
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以人血清白蛋白为固定相的分子生物色谱分析几种中药活性成 … 总被引:2,自引:0,他引:2
提出用人血清白蛋白分子生物色谱分析中药活性成分的方法,分别比较了当归等4种单味中药的分离结果,考察了提取当归的3种溶剂及提取时间对活性物质提取量的影响,同时建立了当归中阿魏酸与藁本内酯的宣分析方法。 相似文献
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应用分子生物色谱技术研究了筛选和分离当归中的活性成分。以甲基丙烯酸缩水甘油酯为功能单体,通过原位聚合得到了整体柱基质,用二乙胺活化后,以吸附蛋白的方法得到了以牛血清白蛋白(BSA)为固定相的分子生物色谱柱。当归样品经甲醇提取,0.45μm膜过滤后,以BSA分子生物色谱柱为分离柱,以含2%(体积分数)甲醇的Tris-盐酸缓冲溶液为流动相进行分离,用二极管阵列检测器检测。结果表明:活性组分在BSA上的保留机理是疏水作用、静电作用和特定的与空间结构相关的多种因素的共同作用结果。将BSA柱上的保留组分进行了气相色谱-质谱分析,鉴定了8种成分,包括当归中的主要可挥发性成分(藁本内酯)。 相似文献
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分别从中药成分分析、活性筛选和代谢组学三方面对质谱技术在中药研究中的应用进展进行了全面综述.在中药成分分析方面,重点介绍了寡糖异构体的分析方法,以及质谱指纹图谱技术在中药成分分析及质量控制中的应用;在活性筛选方面,分别介绍了超滤-质谱、细胞膜色谱-质谱、微透析-质谱、亲和色谱-质谱、强度衰减质谱、修饰琼脂糖珠-质谱和直接分析质谱等技术及其应用;在代谢组学研究方面,对中药治疗肝损伤、肾虚、心肌梗死和糖尿病等疾病方面的研究进展进行了阐述.上述内容充分反映了质谱技术在中药创新性研究中的重要性. 相似文献
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基于高压制备液相的多维色谱技术在中药分离纯化中的应用 总被引:1,自引:0,他引:1
中药物质基础复杂,对其活性成分的分离一直是中药研究的难题.基于高压制备液相的多维色谱系统在高压制备液相色谱的基础上,结合了多种分离技术,极大地提高了色谱系统的分离性能和分离效率,更有利于对物质基础复杂的中药样品进行分离纯化.本文介绍了基于高压制备液相系统的多维色谱系统的基本原理、分离模式以及关键技术,并综述了其在中药分离纯化中的应用. 相似文献
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用高表达EGFR细胞膜色谱-HPLC/MS联用快速筛选独活中抗EGFR活性成分 总被引:1,自引:0,他引:1
报道了用高表达表皮生长因子受体细胞膜色谱与高效液相色谱/质谱在线联用方法(EGFR/CMC-online-HPLC/MS)快速筛选发现中药独活中的活性成分.实验中,采用高表达EGFR的细胞膜制备色谱固定相,建立EGFR/细胞膜色谱(EGFR/CMC)模型,利用柱切换和固相萃取技术,将EGFR/CMC模型与高效液相色谱/质谱(HPLC/MS)在线联用,构成一种新的可同时"识别-鉴定"目标成分的二维色谱系统,并应用于快速筛选独活中具有抗EGFR活性的目标成分.结果发现独活中的蛇床子素具有与对照药物达沙替尼类似的色谱保留特性,能够作用于EGFR;同时MTT及Elisa分析实验证实蛇床子素对HEK293EGFR细胞增殖及EGFR表达均有抑制作用.本文建立的EGFR/CMC-online-HPLC/MS二维色谱方法,可以选择性地从中药复杂体系中快速"识别-鉴定"目标组分,且筛选结果与特定生物效应显著相关. 相似文献
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中药活性成分的快速分离分析一直是中药研究的重点和热点问题。该文建立了在线亲和固相萃取-高效液相色谱-二极管阵列检测-四极杆飞行时间质谱技术快速筛选中药中与α-葡萄糖苷酶有结合作用的活性成分的方法。四通阀和六通进样阀组成接口界面,收集亲和固相萃取柱中与α-葡萄糖苷酶有结合作用的活性成分,接着进入液相色谱系统进行分析鉴定。阳性对照品((+)-儿茶素)和阴性对照品(水杨酸)混合物筛选确定了方法的特异性和准确性。接着,以玉竹为研究对象,筛选出9种主要的α-葡萄糖苷酶抑制活性化合物,包括5种苯乙基肉桂酰胺类化合物,4种双氢高异黄酮类化合物。结果表明建立的方法简便、快速、特异性强,可用于任何复杂体系中α-葡萄糖苷酶结合活性成分的筛选。 相似文献
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Summary A novel strategy for the screening and analysis of biologically active compounds in traditional Chinese medicine by molecular
biochromatography is proposed. Molecular biochromatography with human serum albumin (HSA) immobilized on silica as stationary
phase was used to screen and analyse the bioactive compounds in the typical Chinese medicine ofAngelica sinensis (Oliv.) Diels. Ten peaks showed retention on this column, which is based on their affinity for HSA. Ferulic acid and liguistilide
were identified as the principal active components, which agrees very well with the results in the literature. A quality control
method was also developed based on the simultaneous determination the concentrations of ferulic acid and liguistilide in solutions
ofAngelica sinensis (Oliv.) Diels extracted with water and methanol. It was observed that the concentrations of ferulic acid and liguistilide
in solution extracted with methanol were 2 and 53 times higher, respectively, than those with water. It was shown that molecular
biochromatography is an effective way of analysing and screening biologically active compounds in traditional Chinese medicine. 相似文献
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《Electrophoresis》2017,38(3-4):486-493
A new method for screening tyrosinase inhibitors from traditional Chinese medicines (TCMs) was successfully developed by capillary electrophoresis with reliable online immobilized enzyme microreactor (IMER). In addition, molecular docking study has been used for supporting inhibition interaction between enzyme and inhibitors. The IMER of tyrosinase was constructed at the outlet of the capillary by using glutaraldehyde as cross‐linker. The parameters including enzyme reaction, separation of the substrate and product, and the performance of immobilized tyrosinase were investigated systematically. Because of using short‐end injection procedure, the product and substrate were effectively separated within 2 min. The immobilized tyrosinase could remain 80% active for 30 days at 4°C. The Michaelis–Menten constant of tyrosinase was determined as 1.78 mM. Kojic acid, a known tyrosinase inhibitor, was used as a model compound for the validation of the inhibitors screening method. The half‐maximal inhibitory concentration of kojic acid was 5.55 μM. The method was successfully applied for screening tyrosinase inhibitors from 15 compounds of TCM. Four compounds including quercetin, kaempferol, bavachinin, and bakuchiol were found having inhibitory potentials. The results obtained in this work were supported by molecular docking study. 相似文献
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Screening of lipase inhibitors in Folium Mori with lipase‐linked magnetic microspheres by high‐performance liquid chromatography and evaluation in diabetic mice 下载免费PDF全文
A new method for the screening of compounds with hypoglycemic effect from traditional Chinese medicines employing high‐performance liquid chromatography and lipase‐linked magnetic microspheres has been proposed. We hypothesized that the interaction of traditional Chinese medicine extracts with lipase‐linked magnetic microspheres should decrease the concentration of compounds with hypoglycemic effect. Using this approach, the potential lipase inhibitors in Folium Mori extract were investigated. First, lipase was immobilized on magnetic microspheres by a chemical method. Then, by comparing the chromatograms of samples before and after the interaction with lipase‐linked magnetic microspheres, seven compounds of Folium Mori extract were identified. It was found that protocatechuic acid, chlorogenic acid, protocatechualdehyde, rutin, isoquercitrin, astragalin, and dicaffeoylquinic acid B had evident combination with lipase‐linked magnetic microspheres. Their hypoglycemic effects were verified in streptozocin‐induced diabetic mice. In the present study, astragalin was verified to improve the glucose tolerance and lower the level of glucose in streptozocin‐induced diabetic mice, which indicated that astragalin might be a new highly efficient lipase inhibitor. Based on these significant results, this method could be a convenient approach to screen potential lipase inhibitors from traditional Chinese medicines. Meanwhile, it also could be expanded to screen other active compounds in traditional Chinese medicines. 相似文献
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综述了近十几年来报道的具有良好生物活性的2-芳基苯并呋喃类化合物, 以及这一类化合物结构骨架的构建与合成方法. 相似文献
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A method for the screening and analysis of biologically active compounds in traditional Chinese medicine is proposed. Affinity chromatography using a human serum albumin (HSA) stationary phase was applied to separate and analyze the bioactive compounds from Artemisia capillaris Thunb. Five major peaks and several minor peaks were resolved based on their affinity to HSA, two of them were identified as scoparone (SCO, 6,7-dimethoxycoumarin) and capillarisin (CAP). CAP shows a much higher affinity to HSA than SCO. The effects of acetonitrile concentration, eluent pH, phosphate concentration and temperature on the retention behaviors of several major active components were also investigated, and it was found that hydrophobicity and eluent pH play major roles in changing retention values. The results demonstrate that the affinity chromatography with a HSA stationary phase is an effective way for analyzing and screening biologically active compounds in traditional Chinese medicine. 相似文献
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Yueting Li Jie Liu Rubin Su Qian Li Yijun Chen Jiao Yang Shujun Zhao Zhixin Jia Hongbin Xiao 《Journal of separation science》2020,43(6):1032-1042
Detection and determination of many known/unknown compounds in traditional Chinese medicines have always been challenging. To comprehensively identify compounds in Qishen granule, which is a widely prescribed herbal formula for treating chronic heart failure, a pseudotargeted screening method was proposed based on compound biosynthetic correlation using ultra high‐performance liquid chromatography coupled with high‐resolution mass spectrometry. Firstly, all possible compounds of Qishen granule were classified into nine types according to their core skeletons, and potential analogue molecular formulas were predicted according to core compound‐related biosynthetic correlations, such as methylation, hydroxylation, and glucosidation. Secondly, nine pseudocompound databases consisting of core compounds, deduced biosynthetic correlations, and predicted analogue molecular formulas were established. Then, compounds of interest were directly located by pseudotargeted screening of high resolution mass spectrometry data and further verified by target tandem mass spectrometry. As a result, 213 constituents were identified and 21 of them were determined as potential new compounds. This demonstrated that pseudotargeted screening based on compound biosynthetic correlations significantly facilitated the processing of extremely large information data and improved the efficiency of compound identification. This research provided essential data for exploration of effective substances in Qishen granule and enriched the methodology for comprehensive characterization of constituents in complex traditional Chinese medicines. 相似文献