酚性化合物

The objective of present study aims to reveal the adaptive natuer of these metabolistes in nectar in biocoenosis context by analyzing the behavioral and physiological mechanisms of how bees cope with secondary compounds in nectar. The results are as following.

本文通过对取食含有次生代谢物质花蜜的蜜蜂的行为、生理和性别分化的研究，来探讨花蜜中这些次生代谢物质在自然群落中的生态功能，主要的研究结果如下： 1、野坝子植物分泌的花蜜中含有酚类化合物，其相对涩性（多酚对植食性动物取食阻隔大小的参数）为0.1679±0.0467。

Methods〕 Volatile phenolics in drinking water not been extracted by chloroform were detected by flow injection analysis.

目的〕为获得一种方便、准确和灵敏测定水中挥发性酚类化合物的检测方法。

Their structures were characterized as dihydroconiferyl dihydro-p-coumarate, vanillin, apocynin, p-hydroxybenzaldehyde, syringaldehyde, syringic acid, syringylethanone,α-hydroxypropiosyringone, coniferyl aldehyde, dihydroconiferyl alcohol, 2-hydroxyphenylpropanol, and 3-hydroxy-4-methoxy-phenylethanol, respectively.

结果 从该植物中分离得到12个酚性化合物，其结构分别为二氢松柏醇二氢对羟基桂皮酸酯，香草醛，罗布麻宁，对羟基苯甲醛，丁香醛，丁香酸，丁香乙酮，α-羟基丁香丙酮，松柏醛，二氢松柏醇，2-羟基苯丙醇和3-羟基－4-甲氧基苯乙醇。

This thesis deals with the investigation on the chemical constituents of Dioscorea Opposite Thunb and studys the interactions between 5,7-dihydroxy-4′-methoxy flavanone,-epicatechin and bovine serum albumin using fluorescence, electrochemical method ,UV absorption and NMR spectroscopy. The main contents are as follows: Chapter 1: Study of the chemical constituents in Dioscorea opposita Thunb 1. Two methods were used to methylate the fatty acid in Dioscorea opposita Thunb.

本文在前人的工作基础上对我省道地药材-怀山药饮片中的化学成分进行了系统的研究；同时利用核磁共振方法、电化学分析法、荧光光谱法、紫外光谱法分别研究了两种天然酚性化合物5，7-二羟基-4′-甲氧基二氢黄酮，(--表儿茶素与牛血清白蛋白之间的相互作用，主要内容如下：一。

It worthes noting that diterpene skeleton of tanshinone and gibberellic acid are similar.

丹参主要含有脂溶性的二萜醌类化合物和水溶性的酚酸类化合物，均具有较强的药理活性。

After 3 months storage, our result showed that (1) color a value of rose liqueur with sucrose treatment had a slower decreased than with fructose treatment,(2) the sample added with caffeic acid or ferulic acid or tea polyphenol showed no significant difference in the color, anthocyanins content, and antioxidant capacity during storage as compared to control, and (3) the total amount of volatile compounds of rose liqueur decreased gradually, however there was one ester volatile formed, hexadecanoic ethyl ester, during storage.

贮藏三个月发现，(1)以果糖勾兑者在储藏试验中，其红色度下降速度较以蔗糖处理者快，建议仍以非还原糖进行勾兑对日后酒液保存较易，且酒液最好能予以避光包装，以避免颜色品质的下降；(2)添加不同之多酚类化合物时发现，添加caffeic acid、ferulic acid和茶多酚对酒液色泽、花青素含量、以及抗氧化能力之降低速度与控制组并无显著性的差异。(3)酒液储藏三个月后，其香气高级醇均有减少之趋势；但有hexadecanoic acid， ethyl ester酯类出现。

In chapter 6, a simple and rapid method for the simultaneous determination of three water-soluble compounds,β(3, 4-dihydroxyphenyl) lactic acid, protocatechuic acid and protocatechuic aldehyde, in radix Salviae Miltiorrhiza injection was firstly developed.

在第六章，我们首次建立了一种简单的、快速的同时测定丹参注射液中三种水溶性化合物丹参素、原儿茶酚和原儿茶醛的毛细管区带电泳法。

From its roots, we gained 9 compounds including triterpenes, steroidal glycoside, and fatty acid, a triterpene and a of them are new compounds.

分别对肥牛树的根、茎、叶三个部分的乙醇提取物进行了提取分离工作，从其根中分离鉴定了9个化合物，包括三萜、甾醇苷、酚性化合物、螺环化合物和脂肪酸等，其中有两个新化合物，即一个三萜和一个螺环化合物。

From its branchs, we obtained 8 compounds belonging to triterpene, norsesquiterpene, phenolic compound, lignan and long chain fatty acid. A lignan and a long chain fatty acid are new compounds.

从其枝条中分离鉴定了8个化合物，包括三萜、降倍半萜衍生物、酚性化合物、木脂素和脂肪酸等，其中有两个新化合物，即一个木脂素和一个长链脂肪酸。

RESULTS ＆ CONCLUSIONS: 8 compounds were isolated and 6 compounds elucidated as Bergarpten, Umbelliferone, Skimmianine, Kaempferol, 3,5 - Diacetyltambulin and Zanthonitrile.

结果与结论：从竹叶椒果实的脂溶性部位分离得到了8个化合物，鉴定了其中的6个化合物，分别是化合物1香柑内酯、化合物2伞形花内酯、化合物3菌芋碱、化合物4山奈酚、化合物5（3，5-Diacetyltambulin）、化合物6；其中山奈酚系首次从花椒属植物中分离得到。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。