1) catechin
[英]['kætitʃin] [美]['kætɪ,kɪn]
儿茶素
1.
Polymer Characteristics of Catechin and Catechin-Ge~(4+) Measured with a Technology of Mass Spectrometry;
质谱技术研究儿茶素及儿茶素-锗多聚体特性
2.
Electrocatalytic action of catechin at modified electrode of multi-walled carbon nanotube;
多壁碳纳米管修饰电极对儿茶素的电催化作用
3.
The Optimization and Comparison of two Extraction Processes for Production of Tea Catechins;
儿茶素的两种浸提工艺的优化及比较
2) catechins
儿茶素
1.
Simultaneous Determination of Five Catechins and Caffeine in Tea by HPLC and Differentiation of Teas by Cluster Analysis;
HPLC法测定茶叶水提液中五种儿茶素和咖啡碱及其用于茶叶分类的研究
2.
Research Advances in Health and Pharmacological Functions of Tea Catechins;
茶叶儿茶素保健及药理功能研究进展
3.
Near infrared spectroscopic model for determinating total catechins in tea polyphenol powder based on radical basis function network;
基于径向基函数网络的茶多酚总儿茶素近红外光谱检测模型的研究
3) tea catechins
儿茶素
1.
Study on the preparation of core-shell complex nanoparticles and nano-nutraceuticals Ⅰ. Preparation of core nanocapsules encapsulating tea catechins;
芯-壳复合纳米颗粒及其纳米营养物制备技术的研究 Ⅰ.儿茶素纳米胶囊的研制
2.
Cooperativity of tea catechins and other antioxidant;
儿茶素和其它抗氧化剂的协同作用(译)
3.
The results showed as following: The total tea catechins and epicatechin isomers (EGC, EC, EGCG, GCG,including GCG, DL-C) are demonstrated varying during sucrose-green-tea both fermentatio.
结果表明:不同菌种单一和混合培养不同时间,其培养液中的各儿茶素及总量存在明显差异,产膜醋酸菌混合培养有促进EGCG、ECG降解的作用。
4) (+)-catechin
儿茶素
1.
(+)-catechin
儿茶素在离子交换纤维上的吸附动力学
2.
(+)-catechin
HPLC法测定腹痛水中的儿茶素和表儿茶素的含量
3.
(+)-catechin
HPLC测定万应胶囊中儿茶素、表儿茶素和盐酸小檗碱的含量
5) tea catechin
儿茶素
1.
The results show that the antioxidant ability of tea catechin of large leaf tea is more intense than that of small leaf tea.
比较研究了大、小叶种茶儿茶素在植物油中的抗氧化作用 。
2.
To study the stability of tea catechin in the artificial simulation gastric juices and artificial simulation intestinal juice,the authors applied liquid chromatography to examine the stability in the environment of vary pH and simulation stomach and intestines way.
为研究模拟人体胃肠道环境对儿茶素稳定性的影响,利用高压液相色谱技术测定了不同时点儿茶素在不同pH溶液及人工模拟体胃液与肠液中的含量。
6) Tea catechin
茶儿茶素
1.
Tea catechin is a high effective and low toxic scavenger of free radical and has various pharmacological and healthy functions Its absorption,distribution,biologic transformation and excretion were summarized in this paper,so as to provide some theoretical reference for further study of tea catechi
茶儿茶素是一种高效低毒的自由基清除剂 ,具有多种药理和保健功能。
补充资料：儿茶素
又称儿茶精。为黄烷醇的衍生物,分子式C15H14O6。儿茶素最初由儿茶中提出。为无色结晶形固体；能溶于水；其水溶液受热或在无机酸存在下，容易聚合（见聚合反应）成无定形鞣质。儿茶素作为鞣质的前体，广泛分布于植物中，且常与相对应的黄酮类化合物共存。儿茶素的分子中有两个手性（见手征性）碳原子,故有四种立体异构体:(+)－儿茶素、(-)－儿茶素、(+)－表儿茶素、(-)－表儿茶素。
儿茶素类中其他化合物如没食子儿茶素（又称茶儿茶素）等也都有类似的立体异构体，它们在热水溶液中容易发生差向异构化作用或变旋作用(见旋光异构)而相互转化。儿茶素类在植物体中可游离存在，或与糖（见碳水化合物）结合成苷或与有机酸缩合（见缩合反应）为酯类而存在。例如，由茶叶中曾分离出儿茶素及其酯类衍生物，主要有(-)－表儿茶素、(-)－表没食子儿茶素、(-)－表儿茶素-3－没食子酸酯、(-)－表没食子儿茶素-3－没食子酸酯等。这些化合物分子小，溶于水成真溶液，在溶液中可被氧化而自身缩合为不同程度的缩合产物，从水溶性鞣质到水不溶性鞣红。当用开水沏绿茶时，开始茶水为黄绿色澄清液，放置过夜后，转为黄棕色混浊的溶液，即鞣质前体变为缩合鞣质所致。
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