咖啡酸的

Objective: To purify caffeic acid tetramer with macroporous resin on the basis of its fundamental physicochemical stability research.

中文摘要：目的：初步研究咖啡酸四聚体的理化稳定性的基础上选择合适的大孔吸附树脂，去除杂质，提高紫草水溶性部分中有效成分咖啡酸四聚体的含量。

A rapid LC/MS/MS method was developed for the simultaneous determination of rosmarinic acid, caffeic acid and ferulic acid.

本文建立了一种同时快速测定水溶性迷迭香提取物中迷迭香酸、阿魏酸和咖啡酸含量的高效液相色谱－串联质谱分析方法。

The constituents were extracted by some solvents. 18 constituents were isolated from Chloroform fraction by different chromatography. 15 constituents were identified by IR ,MS and NMR as follows: 3-sitosterol, P-sitosterylpalm itate,succinate acids, 1, 4-benzenediol, 1, 2-benzenediol, p-hydroxybenzaldehyde, syringaresinol, oleanolic acid, usolic acid, ethyl caffeate , Rosmarinic acid ethylster and etc. In such constituents ,nine compounds were isolated for first time from Origanum vulgare L..

牛至药材经水煮醇沉法所得浸膏，利用溶剂法和色谱法从中分离得到18个单体成分，通过IR、MS、NMR等波谱技术鉴定了其中的15个化合物，分别为β-谷甾醇(1)、β-胡萝卜苷(2)、琥珀酸(3)、对-二苯酚(4)、邻-二苯酚(5)、对羟基苯甲醛(6)、1.2-二羟基-4-异丙基-5-甲基苯(7)、新木脂素(8)、丁香脂素(9)、齐墩果酸(10)、乌苏酸(11)、4-二十六烯(12)、正二十六醇(13)、咖啡酸乙酯(14)、迷迭香酸乙酯(15)等，其中化合物3、4、5、6、7、8、9、14、15等9种化合物均为首次从该属植物中分离得到。

The identified proteins were divided into two following categories: one is regulatory proteins, for example, caffeic acid 3-O-methyltransferas, HSP70, glyoxalase I , actin, and so on. They are involved in protein biosynthesis and processing, cellular structural organization and stress responses. The other is function proteins, for instance, ascorbate peroxidase, cytoplasmic malate dehydrogenase, cytosolic phosphoglycerate kinase, S-adenosyl methionine synthetase, ATP synthase, and so on. They are involved in photosynthesis, photorespiration, redox homeostasis, and metabolisms.

通过分析可以将这些差异蛋白分为两大类：第一类是调节性蛋白，如咖啡酸三氧转甲基酶，热激蛋白70，醛酮变位酶I，肌动蛋白等，它们主要参与蛋白质的合成和加工、胁迫响应、细胞骨架稳定等过程；第二类是功能性蛋白，如抗坏血酸过氧化物酶，细胞质苹果酸脱氢酶，细胞质磷酸甘油酸激酶，S-腺苷蛋氨酸合成酶，ATP合酶等，它们则参与氧化还原平衡、光合作用、光呼吸和各种代谢等过程。

At present, the pigment from purple sweet potato is extracted by acid solution, the major anthocyanins are cyanidin and peonidin acylated with aromatic acid, such as caffeic acid, ferulic acid and ρ-hydroxybenzoic acid.

目前，该色素主要采用酸性溶剂法直接提取，其主要成分为被咖啡酸、阿魏酸或对羟基苯甲酸等芳香酸酰化的矢车菊素和芍药素等花色苷。

These compounds were identified as follows:chrysophanol (FP-1),physcion(FP-2),eriosematin(FP-3),scoparone(FP-4),lupeol(FP-5),betulinic acid(FP-6),3\',4\'-Dihydroxy-trans-cinamic acid octacosyl ester(FP-7),β-sitosterol (FP-8),flemiphilippinone A(FP-9),monopalmitin(FP-10),emodin(FP-11),islandicin (FP-12),salicylic acid(FP-13),p-methoxyphenylpropionic acid(FP-14),trideca-1, 3-diene(FP-15),lupinifolin(FP-16),flemichin D(FP-17),flemiphilippinin A(FP-18), auriculasin(FP-19),erythrinin B(FP-20),6-C-prenylluteolin(FP-21), 8-(1,1-dimethylallyl) genistein(FP-22),flemiphilippinin E(FP-23),flemiphilippinin F (FP-24),5,7,3\',4\'-tetrahydroxy-6,8-diprenylisoflavone(FP-25),flemiphilippinin D (FP-26),dorsmaninsⅠ(FP-27),osajin(FP-28),6,8-diprenyleriodictyol(FP-29), lupinalbin A(FP-30),genistein(FP-31),3\'-O-methylorobol(FP-32),orobol(FP-33), 5,7,2\',3\',4\'-pentahrdroxyflavone(FP-34),the mixture of biochanin A and prunetin (FP-35 and 36),genistin(FP-37),sophororicoside(FP-38),3\'-O-methylorobol-7-glucoside(FP-39),the mixture of sissotrin and prunetin 4\'-O-β-D-glucoside(FP-40 and 41),adenosine(FP-42) and luteoloside(FP-43,mixture).

这些化合物分别为大黄酚(FP-1)、大黄素甲醚(FP-2)、eriosematin(FP-3)、滨蒿内酯(FP-4)、羽扇豆醇(FP-5)、白桦酸(FP-6)、咖啡酸二十八烷酯(FP-7)、β-谷甾醇(FP-8)、蔓性千斤拔酮A(FP-9)、单棕榈酸甘油酯(FP-10)、大黄素(FP-11)、islandicin(FP-12)、水杨酸(FP-13)、对甲氧基苯丙酸(FP-14)、十三烷-1，4-二烯烃(FP-15)、lupinifolin(FP-16)、千斤拔素D(FP-17)、蔓性千斤拔素A(FP-18)、auriculasin(FP-19)、erythrinin B(FP-20)、6-C-异戊烯基木犀草素(FP-21)、8-(1，1-二甲烯丙基)-染料木黄酮(FP-22)、蔓性千斤拔素E(FP-23)、蔓性千斤拔素F(FP-24)、5，7，3′，4′-四羟基-6，8-双异戊烯基异黄酮(FP-25)、蔓性千斤拔素D(FP-26)、dorsmaninsⅠ(FP-27)、osajin(FP-28)、6，8-双异戊烯基圣草素(FP-29)、lupinalbin A(FP-30)、染料木黄酮(FP-31)、3\'-O-甲基香豌豆苷元(FP-32)、奥洛醇(FP-33)、5，7，2′，3′，4′-五羟基黄酮(FP-34)、鹰嘴豆素甲和樱黄素的混合物(FP-35和FP-36)、染料木苷(FP-37)、槐属苷(FP-38)、7-葡萄糖基-3\'-O-甲基香豌豆苷(FP-39)、印度黄檀苷和樱黄素4′-O-β-D-葡萄糖苷的混合物(FP-40和FP-41)、腺嘌呤核苷(FP-42)和木犀草苷(FP-43，混合物)。

Caffeic acid phenethyl ester is a biologically active ingredient of honeybee propolis.

之前对咖啡酸苯乙酯的研究显示咖啡酸苯乙酯是具有抗病毒、抗发炎、抗氧化、放射线治疗的致敏剂等作用的性质。

The important role of hydroxycinnamic acids,i.e.,caffeic acid, chlorogenic acid,sinapic acid,ferulic acid,3-hydroxycinnamic acid (3-HCA) and 4-hydroxycinnamic acid(4-HCA) as the pBR322 plasmid DNA-Cleaving agents in the presence of Cu ions was investigated.

我们研究了羟基肉桂酸衍生物即咖啡酸、绿原酸、芥子酸、阿魏酸、3-羟基肉桂酸(3-HCA)和4-羟基肉桂酸(4-HCA)在Cu存在下诱导pBR322质粒DNA链断裂损伤情况，结果发现HCAs的促氧化活性与它们的分子结构有密切的关系，具有邻二羟基结构和邻二甲氧基羟基结构的化合物表现出了更高的促氧化活性，其中CaA的活性最高。

A simple, fast, and reliable method based on capillary electrophoresis with electrochemical detection was developed for the separation and determination of rutin, ferulic acid, vanillic acid, chlorogenic acid, quercetin and caffeic acid in Radix Astragali and its medicinal preparations.

采用毛细管电泳－电化学检测法对中药黄芪的主要活性成分芦丁、阿魏酸、香草酸、绿原酸、槲皮素和咖啡酸进行了分离和测定。

Chemically, propolis is exceedingly complex and contains a rich variety of potent terpenes and benzoic, caffeic, cinnamic, and phenolic acids.

从化学成分分析，蜂胶是极度复杂的并且富含了有效的萜烃，安息香酸，咖啡酸，苯乙烯酸和酚酸。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。