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- The purity of isoquercitrin was isolated with a silica gel column. 酶反应产物用硅胶柱层析法提取,可以得到高纯度的异槲皮甙。
- The specimen was extracted by the macroreticular resin and silica gel column. 样品经大孔树脂柱、硅胶柱分离,然后用TLC进行鉴定合并。
- The molecular weight of the antibiotic substance is 48000 Dalton,tested by sephadex-G75 gel column chromatography. 而且用Sephadex-G75凝胶柱层析法测得抗生物质的分子量为48000道尔顿
- Conclusion: Silica gel column chromatography and crystallization are simple and rapid methods to isolate gardenoside. 结论:柱层析和重结晶方法是简单、速分离栀子苷的有效办法。
- Methods The compounds were isolated by silica gel column chromatography and identified by spec-tral analysis. 方法通过硅胶柱色谱法分离纯化化合物,谱学方法鉴定其结构。
- Then the extracted material was sequently filtered and sperated by means of silica gel column chromatography. 提取物通过硅胶柱层析分离,得到无辣味的红色色素。
- Silica gel column chromatography was used to separate and purify total alkaloids from Fritillaria ussuriensis Maxim. 目的:对东北特产平贝母的生物碱进行分离纯化研究。
- Conclusion Chrysophanol and physcion could be effectively separated by silica gel column chromatography. 结论硅胶柱色谱可以实现大黄酚和大黄素甲醚的高效分离;
- Silica gel column separation method and spectrophotography were used to determine the content of urson in the preparation. 采用硅胶柱分离分光光度法,对制剂中所含熊果酸成分进行含量测定,结果含量测定的标准品线性关系好,检测数据稳定。
- A new method is reported for the determination of naphthylacetic acid by gas chromatography on a polydimethylsiloxane sol gel column. 报道了用溶胶-凝胶聚二甲基硅氧烷毛细管柱气相色谱法直接测定萘乙酸的新方法。
- The residue of famoxadone in citrus was studied by acetonitrile extraction,gel column purification,and HPLC-UV detection. 采用乙腈提取、硅胶柱净化、HPLC的检测方法,研究了恶唑菌酮在柑橘中的残留动态。
- In conclusion,the separation method of silica gel column chromatography applied in this experiment can be used to gain highly purified prod... 结论:采用的硅胶柱层析分离纯化可得到纯度较高的分离组分。
- METHODS: Sesquiterpene lactones were separated by the silica gel column and layer preparation, and the active substances were determined by HPLC. 方法:以硅胶柱层析结合薄层制备的方法,分离白术内酯等对照品,以HPLC法测定白术中活性成分的含量。
- Methods: Silica gel column chromatography and crystallization were used to obtained gardenoside from Gardenia jasminoides. 方法:利用柱层析、重结晶从山栀子的成熟果实中进行分离纯化栀子苷。
- The extracts were eluted by 70%,80%,90%ethanol solutions in order in silica gel column chromatography and the refined flovonoids solution was obtained. [方法]采用乙醇回流法提取云南13种蕨类植物根状茎(根)及叶中的总黄酮,经硅胶柱层析,依次用浓度70%25、80%25、90%25的乙醇溶液洗脱,得到精制黄酮溶液,利用紫外光分光光度法测定总黄酮的含量。
- This column showed excellent separation of free fatty acids, amines, and other polar compounds.The sol gel column also showed good r... 游离的脂肪酸、有机碱可直接在该柱上得到很好的分离,其他极性化合物也在该柱上得到极好的分离。
- Method Compounds were extracted by 90% ethanol-petroleum ether and acetoacetate,then purified by silica gel column chromatography. 方法采用硅胶柱层析进行分离纯化,根据理化性质和波谱学数据进行结构鉴定。
- Methods The optimal elution requirement was found by comparing several different elution agents, and the pure compound was purified by silica gel column and gel chromatography. 方法通过最佳展开剂的选择,找到硅胶柱色谱系统的最佳洗脱条件,粗分离后的供试品通过凝胶柱色谱系统分离纯化得到纯供试品。
- A method is described for successive purification of epigallocatechin gallate(EGCG)and epicatechin gallate(ECG)by medium-pressure silica gel column chromatography. 采用一种连续中压硅胶柱层析分离高纯度表没食子儿茶素没食子酸酯(EGCG)及表儿茶素没食子酸酯(ECG),原料为含量高于98%25的茶多酚。
- Two dioscin products and aglycone from enzyme reaction are separated and purified by silica gel column gradient elution with the solvent of chloroform and methanol. 摘要用柱层析法对穿山龙薯蓣皂苷酶解产物进行分离纯化(硅胶柱中以氯仿甲醇洗脱),得到2种单体皂苷和皂苷元。