酚类

As a result, four compounds were obtained from Caesalpinia Sappan L. by four processes. Two compounds were hydroxybenzene and one compound was hydroximic acid.

结果表明，经过四个步骤分离，得到4种纯物质，其中两种为酚类化合物，一种为羟肟酸。

Result: Seven phenolic compounds were identified as rosmarinic acid(1),gallic acid(2),gentisic acid 5-O-(6′-O-galloyl)-β-D-glucopyranoside(3),caffeic acid(4),p-coumaric acid(5),ethyl caffeate(6) and acteoside(7),respectively.

结果：分离得到7种酚类化合物，经结构鉴定为：迷迭香酸(1)，没食子酸(2)，龙胆酸5-O-(6′-O-没食子酰基)-β-D-吡喃葡萄糖苷(3)，咖啡酸(4)，对香豆酸(5)，咖啡酸乙酯(6)和acteoside(7)。

The results of the experiment show that the main non-enzymatic browning reactions are Maillard and caramelization reaction, and VC or polyphenol does not play an important role in the color formation.

结果显示：美拉德反应和焦糖化是主要的非酶褐变反应，VC、多酚类物质对颜色形成不起主要的贡献作用；果糖和蔗糖在非酶褐变反应中起重要的作用，葡萄糖的作用几乎可忽略不计。

Several non-enzymatic types of browning reactions that might possibly occur in citrus juice during storage were also discussed, the result indicated that degradation of Vc was the main cause of browning, whereas the possibility for Maillard reaction, Caramelization, Polyphenol oxidation and condensation to take place in juice was little.

在贮藏过程中，还对橙汁中可能发生的几种非酶褐变类型进行了探讨，发现Vc的降解反应是橙汁褐变的主要原因，而美拉德反应、焦糖化反应或酚类化合物的氧化缩合反应在橙汁中发生的可能性都很小。

After PPO being destroyed,oxidation and condensation of polyphenols were the causes of banana juice browning before juice was sterilized,while caramelization of sug ar played an important role in browning during sterilization.

当热烫充分时，酚类化合物氧化聚合是杀菌前香蕉汁褐变的主要原因，而杀菌时的色泽变化主要是糖类焦糖化反应的结果。

Under the same buffer circumstance, the signals were collected by the amperometric detector and the conductometric detector at the same time using the same Pt wire working electrode and the same counter electrode.

首次采用本实验室自行研制的毛细管电泳多通道电化学检测系统将电导仪和伏安仪并联与同一毛细管电泳系统中，在同一缓冲溶液和同一工作电极下对无机离子和酚类化合物同时进行了检测取得了满意的结果。

Tyrosine is a precursor of certain alkaloids, and of various phenolic inhibitors such as coumaric acid.

酪氨酸是特殊生物碱和许多酚类抑制剂的前体物质，如：香豆酸。

UV-B absorbing capacities of methanol and cell-bound alkali extractable phenolics were measured in leaves of potted one-year-old seedlings of Pinus massoniana, Schima superba, Cryptocarya concinna, Castanopsis fissa and Castanopsis chinensis to investigate the UV-B protecting strategy in plants exposed to full sunlight.

通过测定马尾松和荷木，及黄果厚壳桂、藜蒴和锥树叶片中甲醇提取物和细胞壁碱性酚类提取物中UV-B吸收物质的含量，以及叶片叶绿素含量和比叶面积，研究全日光强下植物对UV-B的防护策略。

Starain LHG1 could not only utilize the intermediate products of cycloalkanes－clohexanone and cyclopentanone, but also could degrade alkane, aromatic hydrocarbon and phenols, such as liquid paraffin,solid paraffin, naphthalene and phenol.

LHG1菌株能够利用环烷烃代谢的中间产物环己酮和环戊酮。此外，LHG1菌株还能降解液体石蜡、固体石蜡、萘和苯酚等链烃、芳香烃和酚类。

The experimental results suggested that Davallia mariesii and Araiostegia parvipinnata have enriched antioxidant components and better antioxidative activity.

首先，测定上述七种植物水抽取物总多酚类之含量，结果显示以海州骨碎补、鳞轴小膜盖蕨含量最多；在多种抗氧化活性测定中，亦以鳞轴小膜盖蕨、海州骨碎补具较佳之活性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。