多酚类

多酚类化合物对MTT法测定细胞活性的影响

Influence of polyphenols on MTT method in detecting cell activity

在试验浓度范围内，CO2浓度为600μmol·mol-1时最有利于百合叶片多酚类和类黄酮含量的提高。

The contents of polyphenols and flavonoids in lily leaves reached the maximum when the concentration of CO_2 was 600 μ mol · mol ~ - 1 .

樱桃中还含有大量的维生素A、B以及多酚类抗氧化物质。

Cherry also contains a lot of vitamin A , B and a number of phenolic antioxidants .

分析了苦丁茶多酚类总量、儿茶素组成、咖啡碱和维生素C含量。

Composition of catechins and contents of polyphenols , caffeine and vitamine C were analysed by HPLC method .

AIM以多酚类、腐殖质结合的碳水化合物为主要组成物质。

AIM fraction was dominated by high branched ( n value ) polyphenols and humus bound carbohydrates .

甘蔗植物组织内的多酚类、色素类等物质是干扰RAPD扩增反应的主要成分。

Substances such as phenols , pigments in plant tissues affect their RAPD results .

这些结果充分表明，PA、TP多酚类物质与胶原蛋白和壳聚糖分子间发生了强烈的相互作用。7.以天然多酚类化合物作为交联剂的胶原蛋白-壳聚糖海绵生物相容性以及止血性能的研究。

The results showed that polyphenols , collagen and chitosan has strong interaction and good compatibility . 7 .

EGCG是一种重要的水溶性茶多酚类化合物。

EGCG is a kind of important water-soluble tea polyphenol compounds .

本文研究了两种天然多酚类化合物毛蕊花甙（VER）和迷迭香酸（RA）在细胞体系中的修复作用，证明细胞中也可能存在DNA非酶性快速修复。

Here we reported that the non-enzymatic fast repair activity of two natural polyphenols may also exist in cellular system .

白藜芦醇（resveratrol，3,4′，5-三羟基二苯乙烯）为多酚类化合物，是一种存在于自然界的植物抗毒素。

Resveratrol ( 3,4 ' , 5-trihydroxystilbene ) is a phytoalexin which is present in a number of plant species .

实测结果也表明细胞中ROS在实验全过程一直维持在高水平，ROS并没有被多酚类清除。

Actually , the present results showed that the cellular ROS are kept at a high level throughout the whole experimental process .

GTP的抗氧化活性是由于在它的结构中存在多酚类化合物。

The antioxidant activity of GTP is due to the presence of polyphenolic compounds in its composition .

研究通过在裂解液中加入聚乙烯吡咯烷酮去除多酚类化合物和利用水饱和乙醚去除多糖，改进了香蕉果实RNA的提取方法。

A suitable method for extracting RNA from banana fruit pulp has been improved by added polyvinylpyrrolidone into the extract solution to remove polyphenolic compounds and using water-saturated ether to remove polysaccharides .

RAPD分析需要分离高质量的核DNA，棉花叶片中多酚类化合物含量高，在DNA分离过程中，它们跟核酸、蛋白质发生不可逆反应，从而影响了DNA的得率和纯度。

A prerequisite to RAPD is the iso - lation of good quality nuclear DNA . Cotton leaves contain high levels of polyphenolic com - pounds that irreversibly interact with proteins and nucleic acids during DNA isolation .

目的：白藜芦醇（resveratrol）是一种存在于葡萄皮及红酒中的多酚类植物抗毒素。

Objective : Resveratrol ( trans-3 , 4 ' , 5-trihydroxystilbene ) is a phenolic phytoalexin present in grape skins and wines , especially red wines .

针对余甘子叶片富含多酚类、多糖、色素等物质，易与DNA结合成复合物，难溶解。又易抑制Taq酶活性，从而影响PCR扩增。

Were rich in emblic leaves , which were subject to combine with DNA to form insoluble compounds , and which inhibited the activity of Tag enzyme , therefore which affected the PCR .

白藜芦醇（Resveratrol）是一种具有抗癌、抗菌、雌激素作用、抗肿瘤、保护神经系统等多种药理活性作用的多酚类化合物。

Resveratrol is a kind of polyphenolic compounds , which are featured with anticancer , antibacterial , estrogenic , antitumour , nervous system protective and other pharmacological activities .

红松（PinusKoraiensis）广泛分布于在我国东北地区，红松种壳中富含多种活性成分，其中多酚类成分是重要的抗氧化剂，具有很大的开发潜力。

Pinus koraiensis is widely distributed in Northeast China . Among variety of active ingredients , polyphenols are important antioxidant in Pinus koraiensis seed shell , and have tremendous development potential .

以上这些结果表明，CAPE以及相关的多酚类化合物保护线粒体的作用主要与它们的抗氧化活性有关，而且它们有可能成为预防和治疗缺血再灌注损伤的有效药物。

These results suggest that CAPE and its related phenolic compounds protect mitochondria mainly correlated to their antioxidative activities and may be of interest for the prevention and therapy of ischemia-reperfusion injuries .

白藜芦醇（Resveratrol，Res）是一类存在于植物中的多酚类化合物，具有很多对人体有益的作用，包括抗心血管疾病、抗肿瘤、抗炎、抗氧化等。

Resveratrol is a polyphenol compound which exists in the plants and has many beneficial functions to human body such as anti-angiocardiopathy , Antitumous effect , antioxidant activity , anti-inflammatory , ect .

本文采用天然多酚类化合物原花青素（PA）、茶多酚（TP）作为交联剂对水产品胶原蛋白-壳聚糖共混膜和海绵进行改性，以期提高其热稳定性和机械性能。

In order to improve thermal stability and mechanical properties of the grass carp scale collagen-collagen-chitosan blend films and sponges , the natural polyphenols PA ( procyanidins ), TP ( tea polyphenols ) was used as crosslinking agent .

GC/MS分析结果表明，Fenton试剂氧化改变了酵母废水中多酚类化合物、焦糖化合物及美拉德色素等难降解物质的结构，使酵母废水容易降解。

The results of GC / MS analysis indicate that the chemical oxidation by Fenton reagent changes the structures of some refractory substances such as caramel , melanoidins and polyphenol , thus making the biodegradation feasible .

党参（CodonoPsisPilosula）是一种常用中药。含有多糖，皂甙，倍半萜类，多酚类，甙类，生物碱类，挥发油等多种成分。

Codonopsis pilosula is a commonly used traditional Chinese medicine , which contains polysaccharides , saponins , sesquiterpenes , polyphenols , glycosides , alkaloids , volatile oil et al .

为了研究多酚类化合物对生物大分子氧化损伤的保护作用，采用MDA测定、SDS-PAGE、琼脂糖电泳，检测了4种多酚对由自由基引起的脂质过氧化、蛋白质氧化降解、DNA断裂的保护作用。

To examine the protections to biological macromoleculars against oxidative damage by several polyphenol compounds . Employ MDA determination 、 SDS-PAGE 、 agarose gel electrophoresis to research the protections to lipid peroxidation , protein oxidation , DNA oxidation induced by free radical of four compounds .

在用这些菌株对海带进行的侵染实验中，研究了海带发病过程中超微结构的变化，海带体内多酚类化合物、活性氧（ROS）含量的变化，以及多酚氧化酶活性的变化。

The changes of ultrastructure , the alteration of the level of polyphenol compounds , reactive oxygen species ( ROS ) and the activities of polyphenol oxidase in Laminaria japonica against infection of alginic acid decomposing bacteria were investigated .

果蔬贮藏、加工过程中的褐变包括酶促褐变和非酶褐变（Maillard反应、焦糖化反应、抗坏血酸氧化变色和多酚类氧化缩合）。

Browning in the processing and storage of fruits and vegetables involves enzymatic browning and non - enzymatic browning ( Maillard reaction , caramel reaction , oxidation of ascorbic acid and oxidation of polyphenols ) .

我们研究了咖啡酸苯乙酯（Caffeicacidphenethylester，CAPE）以及相关的多酚类化合物对缺氧复氧诱导离体小鼠脑和肝脏线粒体损伤的保护作用。

In the present study , an attempt has been made to evaluate the protective effects of caffeic acid phenethyl ester ( CAPE ) and its related phenolic compounds on mouse brain and liver mitochondria injury induced by in vitro anoxia-reoxygenation .

通过最陡爬坡试验和中心组合设计试验，优化得到最佳的多酚类化合物提取条件为：丙酮浓度为62%，提取温度为47℃，在此条件下啤酒花中多酚的最大提取量为47.40mg·g-1。

The optimal condition described as follows : acetone concentration was 62 % and extracting temperature was 47 ℃ by the steepest ascent experiment and the central composite design . Under the optimized condition , the highest extracting amount of polyphenols from Humulus lupulus was 47.40 mg · g-1 .

大麦多酚类活性物质的提取工艺研究

Studies on Technology for Extraction of Active Substance of Barley Polyphenol

葡萄素是一种取自葡萄的多酚类化合物。

Viniferin is a kind of polyphenol compound extract from grapes .