粗提物SPEHarpagophytum天然产物直接检测NMR法南非钩麻Harpagophytum procumbens(Burch.)DC.eX.Meissn的次生根作为植物饮食补充剂或治疗炎症,风湿的天然药物被广泛使用.其根的极性成分已广泛研究,但非极性成分几乎无人关注.作者应用高效液相色谱法-固定相萃取-核磁共振(HPLC—SPE—NMR)快速分离鉴定了该植物石油...
3) HPLC-NMR 高效液相色谱-核磁共振谱联用4) High performance liquid chromatography nuclear magnetic resonance spectroscopy 高效液相色谱-核磁共振5) SPE-HPLC 固相萃取-高效液相色谱 例句>> 6) SPE-HPLC-MS 固相萃取高效液相质谱补充资料:高效 效能高的;效率高的:～灭虫剂。 说明:补充资料仅用于学习...
NMRLiquid chromatography–solid phase extraction–nuclear magnetic resonance (HPLC-SPE-NMR), noveland highly promising hyphenated technique which is based on post-column analyte trapping by solidphaseextraction. The analytes are subsequently eluted from the SPE cartridges using deuteratedsolvents. This ...
就像您的提问--请问HPLC-SPE-NMR在中药成份分析方面实际应用效果如何? 这种技术既然存在必然有他的优势 在A中效果显著 在B中不尽人意 不能一概而论 要看您想研究什么 如果我武断给出结论 我觉得对您来说可能并不一定是好的见解 您说呢? 另外,作为相关的科研人员,文献真的是获取知识最重要的武器 我个人...
excipient citric acid during storage of an experimental enema preparation has been studied and three isobaric reaction products, i.e., an ester and an amide with non-symmetrically substituted citric acid moieties and a symmetrical amide, were identified by combined use of HPLC–SPE–NMR and HPLC...
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This review describes the principles and performance of a novel and highly promising hyphenated technique, HPLC-SPE-NMR, which is based on post-column analyte trapping by solid-phase extraction. The analytes are subsequently eluted from the SPE cartridges using deuterated solvents. This indirect HPLC...
(3)besidesthesesixwasidentifiedbyapplicationofHPLC-SPE-NMRinaflavonoidrichfractionThelatterapproachconsumedonly15mgofsamples,theoreticallyequivalentto02gofdryleavesThisstudydemonstratesthatHPLC-SPE-NMRhasgreatadvantageoverthegeneralmethodsontheaspectsofmanpower,researchtime,amountsofplantmaterials,andconsumablesin...
Development of a bioassay-coupled HPLC-SPE-ttNMR platform for identification of alpha-glucosidase inhibitors in apple peel (Malus x domestica Borkh.). Food Chem. 2012, 135, 1692-1699.Schmidt, J.S.; Lauridsen, M.B.; Dragsted, L.O.; Nielsen, J.; Staerk, D. Development of a bioassay-...
A bioanalytical platform combining magnetic ligand fishing for α-glucosidase inhibition profiling and HPLC-HRMS-SPE-NMR for structural identification of α-glucosidase inhibitory ligands, both directly from crude plant extracts, is presented. Magnetic beads with N-terminus-coupled α-glucosidase were synth...