儿茶酸

In addition, the effects of PCA and oregano decoction on the pharmacokinetics of MTX were investigated in rats.

此外，本研究亦探讨原儿茶酸及北茵陈水煎剂对 MTX 动力学的影响。

Objective To develop an RP-HPLC method for the simultaneous determination of the contents of protocatechuic acid, rutin, hyperoside and quercitrin in Bidens parviflora Willd..

目的 建立同时测定小花鬼针草中原儿茶酸、芦丁、金丝桃苷和槲皮苷含量的方法。

Results The linear ranges of protocatechuic acid, rutin, hyperoside and quercitrin were 40.2-804.0, 24.8-496.0, 25.2-504.0, 20.4-408.0 mgL^(-1)(r≥0.999 5, n=6), respectively. The average recoveries were 100.2%, 99.3%, 99.5% and 98.3%(RSD.9%, n=6), respectively.

结果 原儿茶酸、芦丁、金丝桃苷、槲皮苷质量浓度分别在40.2~804.0、24.8~496.0、25.2~504.0、20.4~408.0 mgL^(-1)内与峰面积呈良好线性关系(r≥0.999 5， n=6)，方法平均回收率分别为100.2%、99.3%、99.5%、98.3%(RSD≤2.9%， n=6)。

RESULTS β-sitosterol(1),2,6-dihydroxyhumlan-9-3(12),7(13),9-triene(2),quercetin-7-methyl ester(3),protocatecheuic acid(4),shikimic acid(5),shikimic acid methyl ester(6) and daucosterol(7) were isolated from Ill...

结果从厚皮香八角果皮中分离得到了7个化合物，分别是β-谷甾醇(1)2、，6-dihydroxyhumulan-9-3(12)，7(13)，9-triene(2)、槲皮素-7-甲基醚(3)、原儿茶酸(4)、莽草酸(5)、莽草酸甲酯(6)和胡萝卜苷(7)。

Coli and the disruption of pcaH in strain NCIMB 10467 has lead to loss of its ability to catabolize protocatechuate.

而pcaH在NCIMB 10467菌株中的敲除则使该菌完全丧失了代谢原儿茶酸的能力。

The results showed coadministration of PCA significantly increased the Cmax of MTX and oregano decoction significantly increased the systemic exposure of MTX.

结果显示，原儿茶酸显著增加 MTX 之血峰浓度；MTX 和北茵陈水煎剂并服时显著增加 MTX 的全身暴露量及平均滞留时间。

Thetotal amount of 13 kinds of acid methanol soluble phenolic substances in female plant leaves ofAcer negundo L.was also significantly higher than that in male plant leaves.

因为原儿茶酸、丁香酸、苯甲酸、肉桂酸、杨梅黄酮等组分的含量较高，复叶槭雌株叶片中13种酸性醇溶性酚类物质的总量普遍高于雄株(p＜0.01)。

The detection wavelength was set at 258 nm. ResultsThe peak of protocatechuic acid appeared for about 7 minutes.

结果原儿茶酸的保留时间约为7 min，且与其它峰的分离度大于1.5。

ObjectiveTo establish a method to determine the content of protocatechuic acid in Scutellaria barbara.

目的建立半枝莲药材中原儿茶酸的含量测定方法。

The major bioactive components in a Chinese herb named Polygonum perfoliatum L. including ferulic acid, vanillic acid, quercetin, caffeic acid and protocatechuic acid were simultaneously determined by capillary electrophoresis with electrochemical detection in this paper.

采用毛细管电泳-电化学检测法同时分离测定了中药杠板归中的阿魏酸、香草酸、槲皮素、咖啡酸、原儿茶酸等主要生物活性成分的含量。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。