ester

简明释义

英[ˈestə(r)]美[ˈestər]

n. [有化]酯

n. （Ester）人名；（法）埃斯泰；（德、西、意、葡、罗、挪、丹、芬、爱沙）埃斯特尔

英英释义

单词用法

同义词

反义词

例句

1.The invention relates to the application of elaidic acid ethyl ester.

本发明涉及到反油酸乙酯的应用。

2.A glyceryl ester of margaric acid.

十七烷酸的一种甘油酯。

3.The mechanism involves a combination of hydrolysis of the ester linkages and enzymatic attack on ether and amide bonds.

该机制涉及的联系和对醚酯和酰胺键水解酶的攻击组合。

4.A new ester guerbet alcohol acetate is synthesized.

合成了一种新的乙酸2-辛基十二烷醇酯。

5.This complex reaction is characterized by a keto-enol tautomerism equilibrium and ester exchange reaction.

该复杂反应的特征在于酮-烯醇互变异构平衡和酯交换反应。

6.OBJECTIVE: To prepare L-dopa methyl ester hydrochloride eye ointment and establish a method for its quality control.

目的：制备盐酸左旋多巴甲酯眼膏并建立其质量控制方法。

7.The chemical reaction produced an ester that has a fruity smell.

这个化学反应产生了一种酯，它有一种水果的气味。

8.In organic chemistry, an ester is formed by the reaction of an alcohol and a carboxylic acid.

在有机化学中，酯是由醇和羧酸反应形成的。

9.Many natural oils are composed of triglycerides, which are a type of ester.

许多天然油脂由甘油三酯组成，这是一种酯。

10.The sweet fragrance of the perfume is due to the presence of several esters.

香水的甜美香气是由于几种酯的存在。

11.Esterification is the process by which an ester is formed.

酯化反应是形成酯的过程。

作文

Ester is a term used in organic chemistry to describe a class of compounds that result from the reaction between an alcohol and a carboxylic acid. These compounds are characterized by their pleasant aromas and are commonly found in various natural and synthetic substances. For example, many fruits owe their delightful scents to the presence of esters. In fact, the smell of bananas, pears, and apples can be attributed to specific esters that are produced during the ripening process. This characteristic makes esters not only important in chemistry but also in the food and fragrance industries. The formation of an ester (酯) occurs through a process called esterification, where an alcohol reacts with a carboxylic acid, resulting in the release of water. This reaction is typically catalyzed by an acid, which helps speed up the process. The general formula for an ester (酯) is RCOOR', where R and R' represent hydrocarbon chains. Depending on the length and structure of these chains, the properties of the ester can vary significantly. Esters are not only known for their fragrances but also for their applications in various fields. In the pharmaceutical industry, esters are often used as intermediates in the synthesis of drugs. Their ability to modify the solubility and absorption characteristics of active ingredients makes them valuable in drug formulation. Moreover, esters are widely used as solvents in paints, coatings, and adhesives due to their favorable evaporation rates and low toxicity. In addition to their industrial applications, esters play a crucial role in biological systems. Many lipids, which are essential components of cell membranes, are actually esters formed from glycerol and fatty acids. This highlights the importance of esters in maintaining cellular structure and function. Furthermore, the metabolism of fats in our bodies involves the breakdown of triglycerides, which are a type of ester, into fatty acids and glycerol to provide energy. One of the most fascinating aspects of esters is their role in the production of biodiesel. Biodiesel is made through a process called transesterification, where triglycerides (fats or oils) react with methanol or ethanol to produce fatty acid methyl esters (FAME). This renewable fuel source has gained popularity due to its lower environmental impact compared to fossil fuels. The use of esters in biodiesel production exemplifies how organic compounds can contribute to sustainable energy solutions. In conclusion, the significance of esters (酯) extends far beyond their delightful fragrances. They are integral to numerous chemical processes, industrial applications, and biological functions. Understanding the chemistry behind esters not only enhances our knowledge of organic compounds but also opens doors to innovations in various fields, including pharmaceuticals, food science, and renewable energy. As we continue to explore the potential of these versatile compounds, it is clear that esters will remain a vital area of study in chemistry and beyond.

酯是有机化学中用来描述一类化合物的术语，这些化合物是由醇和羧酸反应而成的。这些化合物以其愉悦的香气为特征，通常存在于各种天然和合成物质中。例如，许多水果的迷人气味归因于酯的存在。实际上，香蕉、梨和苹果的气味可以归因于在成熟过程中产生的特定酯。这一特性使得酯不仅在化学上重要，而且在食品和香水工业中也占有一席之地。 酯（酯）的形成通过一个叫做酯化的过程发生，在这个过程中，醇与羧酸反应，释放出水。这个反应通常由酸催化，以加速反应过程。酯（酯）的通式为RCOOR'，其中R和R'代表烃链。根据这些链的长度和结构，酯的性质可能会有显著差异。 酯不仅因其香气而闻名，还因其在各个领域的应用而受到重视。在制药行业，酯常用作药物合成的中间体。它们能够改变活性成分的溶解度和吸收特性，使其在药物配方中具有价值。此外，由于其良好的蒸发速率和低毒性，酯被广泛用作油漆、涂料和粘合剂中的溶剂。 除了工业应用，酯在生物系统中也发挥着至关重要的作用。许多脂质，作为细胞膜的重要组成部分，实际上是由甘油和脂肪酸形成的酯。这凸显了酯在维持细胞结构和功能方面的重要性。此外，我们体内脂肪的代谢涉及将甘油三酯（一种酯）分解为脂肪酸和甘油以提供能量。 酯最令人着迷的方面之一是它们在生物柴油生产中的作用。生物柴油是通过一个叫做转酯化的过程制造的，在这个过程中，甘油三酯（脂肪或油）与甲醇或乙醇反应，生成脂肪酸甲酯（FAME）。这种可再生燃料因其对环境的较低影响而受到青睐。酯在生物柴油生产中的应用示范了有机化合物如何为可持续能源解决方案做出贡献。 总之，酯（酯）的重要性远不止于其愉悦的香气。它们是众多化学过程、工业应用和生物功能的核心。理解酯背后的化学不仅增强了我们对有机化合物的知识，也为药物、食品科学和可再生能源等多个领域的创新开辟了道路。随着我们继续探索这些多功能化合物的潜力，显然酯将在化学及其他领域保持重要的研究方向。