没食子

此外，在酯型儿茶素的没食子酰基基团和羟基苯基B环之间形成的螯状结构可能有助于咖啡碱的复合。

Besides , the structure formed between the the galloyl group in the molecule of ether type catechins and the hydroxyphenyl B ring was also beneficial to the complexing with the caffeine .

二次柱层析制备高纯度表没食子儿茶素没食子酸酯（EGCG）的工艺研究

Study on preparation process of high purity of epigallocatechin gallate ( EGCG ) by column chromatography

HPLC分析结果显示，茶多酚制品主要含表没食子儿茶素（EGC）、表没食子儿茶素没食子酸酯（EGCG）和表儿茶素没食子酸酯（ECG）三种儿茶素。

The analysis of HPLC demonstrated that the Tea-polyphenols production mainly contained three kinds of catechin : EGC , EGCG and ECG .

通过静态试验研究了7种树脂对表没食子儿茶素没食子酸酯（EGCG）和表儿茶素没食子酸酯（ECG）的吸附和解吸性能。

According to the captive test , the adsorption and desorption performances of seven kinds of resins adsorbent to EGCG and ECG were studied .

这项研究仅仅是认为表没食子儿茶素没食子酸酯（EGCG）具有用于艾滋病病毒感染辅助治疗的潜力。

The study is just that epigallocatechin gallate ( EGCG ) has for the adjuvant treatment of HIV infection potential .

在相同的氧化体系中，表儿茶素没食子酸酯（ECG）的表现不同于表没食子儿茶素没食子酸酯，表明其在该试验所选定的化学氧化条件下为相对稳定。

The behavior of ECG is different from that of EGCG under the oxidation system which indicates that ECG is relatively stable to the selected chemical oxidation conditions in this work .

【目的】研究儿茶素没食子儿茶素没食子酸酯（EGCG）对肝药酶和CCl4急性肝损伤的影响。

To study the effect of Epigallocatechin gallate ( EGCG ) on hepatic microsomal drug-metabolizing enzyme and CCl4-induced liver injury .

绿茶的主要成分表没食子儿茶素没食子酸酯（EGCG）对血小板功能影响的研究

The Effect of ( - ) - Epigallocatechin Gallate ( EGCG ), Main Component of Green Tea , on Platelet Function

他认为，新的研究结果表明表没食子儿茶素没食子酸酯（EGCG）一般耐受性良好，对某些患者似乎有益。

The new findings suggest EGCG is generally well tolerated and appears to have some benefit for some patients , he says .

经HPLC分离与DPPH测定，确定表没食子儿茶素没食子酸酯与表儿茶素没食子酸酯为茶花中主要抗氧化活性成分，在茶花提取物的抗氧化活性中起到主要的作用。

In addition , it is found that EGCG and ECG are the major active components responsible for the antioxidant activity of tea flowers by HPLC separation and DPPH assay .

目的探讨紫外线诱导真皮成纤维细胞凋亡的发生机理以及绿茶多酚的主要成分表没食子儿茶素没食子酸酯（EGCG）对凋亡的保护作用。

Objective To explore the mechanism of ultraviolet-induced fibroblast apoptosis and the protective effects of EGCG , a major green tea catechin , on it .

用后一组溶剂系统，表没食子儿茶素（EGC）、儿茶素（±C）得到了分离，纯度达到92%。

Other major components , such as ( - ) epigallocatechin ( EGC ),(±) catechin (± C ) are isolated by the last solvent systems , each at over 92 % purity .

目的探讨没食子儿茶素没食子酸酯（EGCG）对肾脏受活性氧应激损伤的保护作用。

AIM This study was conducted to identify the protection of epigallocatechin 3 gallate ( EGCG ) against the renal damage by reactive oxygen species ( ROS ) .

德国的研究者发现，表没食子儿茶素-3-没食子酸（EGCG），一种在绿茶中发现的类黄酮化合物，可以阻止丙肝病毒进入到肝细胞中。

German researchers have determined that epigallocatechin-3-gallate ( EGCG ) - a flavonoid found in green tea-inhibits the hepatitis C virus ( HCV ) from entering liver cells .

目的观察中波紫外线（UVB）辐射后成纤维细胞（FB）DNA光产物环丁烷嘧啶二聚体（CPDs）产生和清除情况及表没食子儿茶素没食子酸酯（EGCG）和黄芩甙的干预作用。

Objective To investigate the production and removal of cyclobutane pyrimidine dimers ( CPDs ) induced by UVB irradiation and intervention effect by epigallocatechingallate ( EGCG ) in human fibroblasts .

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%的茶多酚。

A method is described for successive purification of epigallocatechin gallate ( EGCG ) and epicatechin gallate ( ECG ) by medium-pressure silica gel column chromatography . The raw material was 98 % tea polyphenols .

本论文第四部分探讨绿茶提取物中主要成分表没食子儿茶素没食子酸酯（EGCG）的抗肿瘤生化调节作用。

In the fourth part of this paper , the antitumor biochemical modulation of epigallocatechin-3-gallate ( EGCG ), which is a main constituent in green tea extract , is reported .

他认为，如果该研究结果得到证实，且其长期用药的安全性得到大规模长期研究证实，那么有希望通过补充表没食子儿茶素没食子酸酯（EGCG）延缓或避免化疗。

If the findings are confirmed and long-term safety established in larger , longer studies , the hope is that EGCG supplements can delay or prevent chemo , he says .

研究具有抗氧化、抗炎作用的绿茶中的主要活性成分表没食子儿茶酚没食子酸酯（EGCG）对紫外线辐射造成角质形成细胞损伤的保护作用。

The protective effects of ( - ) - epigallocatechin - 3 - gallate ( EGCG ) , the major polyphenolic constituent in green tea , on UV-induced keratinocytes damage .

目的研究绿茶多酚的主要单体成分表没食子儿茶素没食子酸酯（EGCG）的多巴胺能神经元保护作用。

Objective To observe whether the dopaminergic neuroprotective effect of ( - ) - epigallocatechin gallate ( EGCG ) is associated with its inhibition of microglial cell activation in vivo .

[目的]探讨表没食子儿茶素没食子酸酯[（-）epigallocatechin鄄3鄄gallate，EGCG]对人白血病细胞K562/A02多药耐药性的逆转作用及相关机制。

To investigate the reversal effect of ( - ) epigallocatechin-3-gallate ( EGCG ) on human leukemic K562 / A02 cell line and its possible mechanisms .

目的：研究表没食子儿茶素没食子酸酯（EGCG）增强阿糖胞苷（AraC）对人白血病HL60细胞的抗肿瘤活性。

OBJECTIVE To study the potentiation of antitumor effect induced by cytosine arabinoside ( AraC ) with ( - ) epigallocatechin 3 gallate ( EGCG ) .

Shanafelt博士认为，多种类型肿瘤实验室研究已表明表没食子儿茶素没食子酸酯（EGCG）切断肿瘤组织营养丰富的血供，直接杀死肿瘤细胞。

Laboratory studies in a variety of tumor types have shown that EGCG cuts off the nutrient-rich blood supply to tumors and directly kills off cancer cells , Shanafelt says .

目的：探讨不同剂量长波紫外线（UVA）对体外培养的人真皮成纤维细胞胶原合成的影响，观察表没食子儿茶酚没食子酸酯（EGCG）对此影响的防护作用。

Objective : To study the effects of different dosage of ultraviolet A ( UVA ) on cultured human dermal fibroblasts collagen synthesis and the protective effects of ( - ) - epigallocatechin-3-gallate ( EGCG ) on UVA-induced inhibition .

采用高压灭菌锅和高压锅产生的高温蒸汽处理茶鲜叶，研究高温蒸汽处理对绿茶中没食子儿茶素没食子酸酯（GCG）含量的影响。

The GCG content in different tea germplasms , change of GCG content during green tea processing and the tea leaf treated with high temperature steam were studied by using the HPLC determination .

糖类是多羟基化合物，合成1需要进行羟基的选择性保护，以便在7-OH定位连接没食子酰基。

Selective protection of hydroxyl groups is a precondition for the synthesis of 1 , in order to specifically connect a galloyl group at 7-OH of sedoheptulose .

对茶色素进行TrisHCl（pH80）洗涤，其洗涤效率也以第1次最高，TFs含量随洗涤次数增多呈现递增趋势，但被洗液体积呈递减趋势，并存在脱没食子酰基作用。

When tea pigments were washed with Tris-HCl buffer ( pH 8.0 ), the washing efficiency was the highest in first washing and the contents of TFs increased with washing times , but the volume of washed liquid was decreased accordingly , and there was de-galloyl group action during washing .

没食子单宁与蛋白质、磷酯和糖的反应研究

Interaction Study on Gallotannins with Proteins , Phospholipids and Sugars

聚酰胺色谱法分离制备高纯度表没食子儿茶素没食子酸酯

Preparation of High Purity Epigallocatechin Gallate by Polyamide Packed Chromatographic Column Separation

没食子酰微晶纤维素酯的制备及稳定性研究

Study on the Synthesis and Stability of Galloyl-microcrystalline Cellulose Ester