计算溶液所需的质量、体积或浓度。
,适用于对基线干扰要求严格的色谱和分析工作流程。
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在色谱分析、有机合成和交叉偶联反应领域已被 33 篇同行评审文献引用。
Information
Proanthocyanidins (PAs), also known as condensed tannins, are a class of polyphenols found in a variety of plants. They are very Solidful antioxidants that remove harmful free oxygen radicals from cells.
In vitro
Proanthocyanidins have also been shown to inhibit lipid peroxidation, platelet aggregation, capillary permeability and fragility. They have been shown to modulate the activity of regulatory enzymes including cyclooxygenase, lipooxygenase, protein kinase C, angiotensin-converting enzyme, hyaluronidase enzyme and cytochrome P450 activities.
In vivo
Proanthocyanidins have been shown to play important roles in several biological processes resulting in health benefits. For instance, proanthocyanidins have been reported to have antioxidant, anti-inflammatory, antimicrobial, antiproliferative, cardioprotective, hypolipidemic and antidiabetic activities. Proanthocyanidins induce a strong hypotriglyceridemic effect in experimental animals, in part by inhibiting VLDL secretion by the liver. Animal studies demonstrate that proanthocyanidins reduce the plasma levels of atherogenic apolipoprotein B-triglyceride-rich lipoproteins and LDL-cholesterol but increase antiatherogenic HDL-cholesterol. Proanthocyanidins are thought to be poorly absorbable and highly metabolized by gut microflora before absorption. They affects lipid metabolism and has important positive consequences on cardiovascular diseases.
分类树(Taxonomy Tree)
| 界(kingdom) | 有机化合物 |
|---|---|
| 超类(Superclass) | 苯丙素类和聚酮类 |
| 类(Class) | 黄酮类化合物 |
| 亚类(Subclass) | 黄烷类 |
| 中间层级节点(Intermediate Tree Nodes) | 黄烷-3-醇 |
| 直接上位类(Direct Parent) | 儿茶素 |
| 其他上位类(Alternative Parents) | 3'-羟基黄酮类化合物 3-羟基黄酮类化合物 4'-羟基黄酮类化合物 4-羟基黄酮类化合物 5-羟基黄酮类化合物 7-羟基黄酮类化合物 1-苯并吡喃 苄醚 儿茶酚 烷基芳基醚 1-羟基-4-未取代苯类化合物 1-羟基-2-未取代苯类化合物 缩酮 1,2-二醇 仲醇 氧环化合物 碳氢化合物衍生物 |
| 分子骨架(Molecular Framework) | 芳香族杂多环化合物 |
| 取代基(Substituents) | 1-苯并吡喃 - 1-羟基-2-未取代苯环化合物 - 1-羟基-4-未取代苯环化合物 - 1,2-二醇 - 3-羟基黄酮 - 3'-羟基黄酮 - 4-羟基黄酮 - 4'-羟基黄酮 - 5-羟基黄酮 - 7-羟基黄酮 - 乙醛酸 - 羟基苯甲酸酯 - 芳基醚 - 芳香族杂多环化合物 - 苯基化合物 - 苯并吡喃 - 苄基醚 - 茶多酚 - 儿茶酚 - 铬烷 - 乙醚 - 烃衍生物 - 羟基黄酮 - 酮醛 - 单环苯基基团 - 有机氧化合物 - 有机杂环化合物 - 有机氧化合物 - 氧杂环 - 苯酚 - 多醇 - 醛基 |
| 描述(Description) | 该化合物属于儿茶素类有机化合物。这类化合物含有儿茶素结构单元,即3,4-二氢-2-苯并吡喃-3,5,7-三硫醇。 |
| 外部描述符(External Descriptors) | 暂无 |
H315: 引起皮肤刺激
H319: 引起严重眼睛刺激
H335: 可能引起呼吸道刺激
H302: 吞食有害
P261: 避免吸入灰尘/烟雾/气体/雾/蒸汽/喷雾
P305+P351+P338: 如进入眼睛:用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出,取出隐形眼镜。继续冲洗。