儿茶

儿茶提取物对菌丝生长的抑制效果较差，但却显著抑制了孢子萌发，抑制率达100%。

The extract of Acacia catechu did not inhibit the growth of mycelium , but restrained the spore germination by 100 % .

目的：建立丹参口服液中原儿茶醛含量的高效液相色谱法（HPLC法）测定方法。

Objective : To establish a content assay method of catechu aldehyde in salvia miltiorrhiza oral liquid by HPLC .

结论：丹参素、原儿茶醛是丹酚酸B的降解产物。

CONCLUSION : They are possibly the degraded artifacts of salvianolic acid B.

儿茶酸还可能预防致癌物质引起的DNA损伤。

Cate-chins may also prevent DNA damage caused by carcinogens .

HPLC法测定血浆中丹参脂质体的原儿茶醛浓度

HPLC Determination of Protocatechuic Aldehyde in Salvia Miltiorrhiza Liposome in Plasma

儿茶素衍生物对人免疫缺陷病毒逆转录酶及DNA聚合酶的抑制作用

The Inhibitory Effects of Catechin Derivatives on the Activities of Human Immunodeficiency Virus Reverse Transcriptase and DMA Polymerases

反相HPLC法测定脉炎消口服液中丹参素和原儿茶醛的含量

RP-HPLC determination on Danshensu and Protocatechuic Aldehyde in " Maiyanxiao " oral liquid

HPLC法测定板栗种仁中原儿茶酸的含量

Determination of content of protocatechuic acid from the seeds of Castanea mollissima Blume by HPLC

原儿茶酸有明显抗乙型肝炎病毒（HBV）的作用。

Protocatechuic acid ( PA ) has the significantly role of anti-hepatitis B virus .

儿茶素对动物血清SOD的影响

Catechin Influence on Serum SOD in Mice

综上所述，中国卤虫PO是一种属于儿茶酚酶类型的含铜金属蛋白酶。

All these demonstrated that AsPO is a copper-containing catecholase-type metalloenzyme .

PVDF微滤膜在天然儿茶染料制备中的应用

Application of PVDF micro-filtration membrane to processing of natural catechu dye

儿茶素对拟衰老大鼠大脑皮层及肾组织MDA、SOD的影响

Effect of catechin on the content of MDA and SOD in cerebral cortex and kidney of aging rats

RP-HPLC法测定鼠肝组织儿茶酚氧位甲基转移酶活性的研究

Study on Catechol-O-Methyltransferase Activity in Rat Liver by RP-HPLC

通过对百合中多酚氧化酶（PPO）的粗酶液进行研究发现以儿茶酚为底物时它有两个最适pH，分别为4.0、7.0。

The enzyme activity showed two pH optima , at pH 4.0 and 7.0 with catechol as substrate .

RP-HPLC测定2种产地板栗种仁中原儿茶酸的含量

Content Determination of Protocatechuic Acid in Seeds of Castanea mollissima Blume from Two Regions by RP-HPLC

儿茶素富集和EGCG单体纯化新工艺研究

Study on the new technology of catechins enrichment and EGCG purification

采用LDH（lactatedehydrogenase）法，检测了五种萃取组分及原儿茶酸对细胞膜的影响。

Lactate dehydrogenase ( LDH ) assay was used to investigate the effects of PCA on cell membrane structures .

盐酸昂丹司琼口服溶液的人体药代动力学和生物等效性研究反相HPLC法测定脉炎消口服液中丹参素和原儿茶醛的含量

HPLC-MS determination of pharmacokinetic of ondansetron in human plasma and its bioequivalence RP-HPLC determination on Danshensu and Protocatechuic Aldehyde in " Maiyanxiao " oral liquid

方法：采用HPLC法测定儿茶及儿茶提取物中儿茶素及表儿茶素的含量；

METHODS : HPLC was used to determine the contents of ( + ) Catechin and ( - ) Epicatechin in catechu and its extract ;

儿茶素对肝药酶和CCl4急性肝损伤的影响

Effects of EGCG on hepatic microSomal drug-metabolizing enzyme and CCl_4-induced liver injury

茶多酚的主要成分是儿茶素，由此证明，儿茶素类化合物与植物抗UV-B辐射损伤机制有关。

Using Arabidopsis , it was demonstrated that the tea polyphenols comprising mainly the catechins alleviate UV-B stress in plants .

儿茶素可明显抑制初步纯化的PG和PL活性以及它们对棉苗组织的浸软作用。

Activities of partial purified PG and PL and their maceration ability on cotton tissues were decreased after mixing with catechin solution .

鲜切莲藕在贮藏期间TP、FP和儿茶酚的量先上升后下降；

The amount of TP , FP and catechol in fresh cut lotus root slices during storage period increased initially and decreased afterwards .

贮藏期间定期测定鲜切莲藕的褐变度（BD）、总酚（TP）、游离酚（FP）和儿茶酚含量。

The browning degree ( DB ), total phenols ( TP ), free phenols ( FP ), and catechol were determined periodically .

果蔬抗氧化作用的物质基础除维生素C、维生素E、β-胡萝卜素和微量元素外，还与茄红素、黄酮、花青素、儿茶素等黄酮类化合物密切相关；

In addition to Vit C , E , β - carotene , carotenoid and micro-elements in fruits and vegetables , the contents of lycopene flavonoids , anthocyanin and catechin are also closely related to antioxidant activities .

儿茶素微胶囊高、中剂量组小鼠的碳粒廓清指数K和吞噬指数α有显著的提高（P＜0.01）；

Microencapsulated catechin high dosage group , middle dosage group could also improved K , a ( P < 0.01 ) and increase the viscus index of spleen and thymus ( P < 0.05 P < 0.01 ) ;

目的探讨抑郁症患者红细胞儿茶酚氧位甲基转移酶（COMT）活性及其与抑郁症发病机制的可能联系。

Objective To explore the relationship between catechol O-methyltransferase ( COMT ) activity and depression .

儿茶素清除超氧阴离子对AngⅡ诱导的内皮祖细胞NO与eNOS表达及凋亡影响

Effects of clearance of superoxide anion by catechin on the expression of NO and eNOS and apoptosis in endothelial progenitor cells induced by angiotensin ⅱ

用荧光探剂DPH研究原儿茶醛对血小板膜流动性的影响

Use of fluorescence probe DPH in the study of the effects of Protocatechualdehyde on platelet membrane fluidity