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- Keywords Arnebia euchroma;caffeic acid tetramer;high perfermanoe liguid chromatography （HPLC）; 关键词新疆软紫草;咖啡酸四聚体;高效液相色谱法;
- Methods Chemical structure of the caffeic acid tetramers product was elucidated by ultraviolet spectrometry(UV),infrared spectroscopy(IR),nuclearmagnetic resonance(NMR) and mass spectrometry(MS). 方法经紫外光谱、红外光谱、核磁共振和质谱确定结构。
- caffeic acid tetramer 咖啡酸四聚体
- Method: The content of caffeic acid was determined by HPLC. 方法：采用HPLC测定咖啡酸含量。
- Objective To determine caffeic acid in Pugongying granules by HPLC. 目的用高效液相色谱法测定蒲公英颗粒中咖啡酸的含量。
- Caffeic acid tetramers 咖啡酸四聚体
- Luteolin(12)and caffeic acid(14)were the ACE inhibitory components of this plant. 其中木犀草素(12)和咖啡酸(14)为袋花忍冬中具有ACE抑制活性的化合物.
- Introduce the advance in the research of caffeic acid phenethyl ester (CAPE) in recent years. 介绍蜂胶中咖啡酸苯乙酯(CAPE)的最近研究进展;
- Experts suspect that coffee’s antioxidants, such as chlorogenic acid and caffeic acid, deserve the credit. 专家认为咖啡中的抗氧化剂是关键。
- METHODS Menthol was determined by GC and caffeic acid was determined by HPLC in bohe dispensing granules. 方法采用气相色谱法测定薄荷脑的含量;采用高效液相色谱法测定咖啡酸的含量。
- CONCLUSION: Caffeic acid Ge has antiproliferative and proapoptotic effect on U14 tumor cells in vivo and in vitro. 结论：咖啡酸锗在体内、外均能有效抑制小鼠U14瘤细胞的增殖，并诱导肿瘤细胞凋亡。
- Results：Caffeic acid Ge could induced H22 cells apoptosis and inhibit telomerase activity by different concentrations. 结果：咖啡酸锗能诱导H22细胞凋亡以及抑制端粒酶的活性，并与药物浓度有关。
- OBJECTIVE To determine the content of caffeic acid and chlorogenic acid in Taraxacum from different habitats. 目的:测定不同产地蒲公英中咖啡酸和绿原酸含量。
- A method for determination phenolic acid(chlorogenic acid and caffeic acid)in sunflower seeds by HPLC was described. 建立了测定向日葵籽中酚酸含量的高效液相色谱法,同时测定了部分向日葵品种中酚酸的含量。
- A new method for determination of caffeic acid was presented based on cetyl pyridine bromide modified carbon paste electrode. 制作了溴代十六烷基吡啶修饰碳糊电极,研究了咖啡酸在该修饰碳糊电极上的电化学行为。
- The content of caffeic acid in freeze-dried samples decreased with increasing harvesting time, whereas p-coumaric acid increased. 测定印度种辣木冷冻乾燥样品的酚酸类化合物，咖啡酸含量随著采收时间的增加而递减。
- Objective：To investigate the effects of Caffeic acid Ge on telomerase activity and apoptosis on H22 cancer cells in mice. 目的：探讨咖啡酸锗对小鼠肝癌H22端粒酶活性及细胞凋亡的影响。
- Conclusion：Caffeic acid Ge could inhibit H22 cells telomerase activity and cell proliferation obviously and could also induce apoptosis. 结论：咖啡酸锗能显著抑制H22细胞端粒酶的活性，抑制其细胞增殖，诱导其细胞凋亡。
- Caffeic acid and ferulic acid were shown to increase the mouse survival time induced by ET 1 iv administration and decrease the vasoconstrictions of isolated aortic rings. 咖啡酸和阿魏酸(ip) 能剂量依赖性地显著延长ET?1 致小鼠急性死亡时间,在离体器官可观察到咖啡酸与阿魏酸能拮抗ET?1的缩血管效应;
