lactones

简明释义

英[ˈlæk.təʊnz]美[ˈlæk.toʊnz]

n. [有化]内酯（lactone 的复数形式）

英英释义

单词用法

同义词

反义词

例句

1.The extraction yield of the lactones under the optimal method was above 70%, and the purity was above 90%.

采用该方法，异土木香内酯与土木香内酯的提取率大于70%，其纯度大于90%。

2.Hawthorn has rich nutrition and contains vitamins, flavones, lactones, carbohydrates, proteins, fats and minerals such as Ca, P and Fe.

山楂营养丰富，含有多 种维生素，还含有黄铜类、内酯、糖类、蛋白质、脂肪和钙、磷、铁等矿物质。

3.Isolation of three sesquiterpene lactones from the roots of Cichorium glandulosum Boiss. et Huet. by high-speed counter-current chromatography.

高速逆流色谱法分离毛菊苣根中的三种倍半萜烯内酯。

4.The main ingredients of Tripterygium wilfordii are total alkaloids and terpenoid lactones.

雷公藤生物碱和总萜内酯是雷公藤主要有效成分。

5.Dr Blackwell studies a group of quorum-sensing molecules called acylated homoserine lactones (AHLs).

Blackwell博士研究了群体感应中的一种叫做酰基高丝氨酸内酯(AHLs)分子。

6.Esters, alcohols, aldehydes, and lactones were the major constituents.

主要成分为酯类、醇类、醛类、内酯类化合物。

7.Isolation of three sesquiterpene lactones from the roots of Cichorium glandulosum Boiss. et Huet. by high-speed counter-current chromatography.

高速逆流色谱法分离毛菊苣根中的三种倍半萜烯内酯。

8.Research shows that lactones can have antimicrobial properties.

研究表明，内酯可能具有抗菌特性。

9.The study of lactones is important in understanding lipid metabolism.

对内酯的研究对于理解脂质代谢至关重要。

10.In perfumery, certain lactones are used to create sweet and creamy scents.

在香水中，某些内酯用于创造甜美和奶油般的香气。

11.Some fruits release lactones during ripening, contributing to their flavor.

一些水果在成熟过程中释放内酯，从而增强其风味。

12.The aroma of the cheese is enhanced by the presence of various lactones.

奶酪的香气因多种内酯的存在而增强。

作文

Lactones are a fascinating class of compounds that have garnered significant attention in the fields of chemistry and biology. These cyclic esters, formed from the condensation of hydroxy acids, play crucial roles in various natural processes and have a wide range of applications in industry and medicine. In this essay, I will explore the structure, properties, and significance of 内酯, highlighting their importance in both nature and human innovation.To begin with, 内酯 are characterized by their unique ring structure, which distinguishes them from other types of esters. The formation of a 内酯 occurs when a hydroxyl group of a carboxylic acid reacts with its own carbonyl group, resulting in a closed-loop molecule. This structural feature not only influences the chemical reactivity of 内酯 but also contributes to their stability and volatility. For example, many naturally occurring 内酯 are known for their pleasant aromas, making them valuable in the fragrance and flavoring industries.In nature, 内酯 are produced by various organisms, including plants and fungi. They serve essential functions in plant signaling and defense mechanisms. One well-known example is the production of 内酯 by certain species of fungi, which can inhibit the growth of competing microorganisms. This natural antifungal property has led to the exploration of 内酯 as potential biopesticides in agriculture, providing an eco-friendly alternative to synthetic chemicals.Moreover, 内酯 have gained prominence in medicinal chemistry. Some 内酯 exhibit bioactive properties, making them candidates for drug development. For instance, the antibiotic compound erythromycin is derived from a specific type of 内酯. Its ability to inhibit bacterial protein synthesis has made it a critical tool in treating various infections. Researchers continue to investigate the therapeutic potential of other 内酯, aiming to discover new drugs that can combat resistant strains of bacteria and other pathogens.In addition to their biological significance, 内酯 are also utilized in various industrial applications. They are commonly used as solvents, plasticizers, and intermediates in the synthesis of other chemicals. The versatility of 内酯 allows them to be incorporated into a wide range of products, from cosmetics to pharmaceuticals. Their ability to enhance the stability and performance of formulations makes them indispensable in many industries.In conclusion, 内酯 are an intriguing group of compounds that hold great promise in scientific research and practical applications. Their unique structure and properties enable them to play vital roles in nature, contribute to advancements in medicine, and serve various industrial purposes. As we continue to study and understand 内酯, we may unlock new possibilities for innovation and sustainability in our world. The ongoing exploration of these compounds underscores the interconnectedness of chemistry and life, reminding us of the importance of natural products in shaping our future.

内酯是一类引人入胜的化合物，在化学和生物学领域受到了广泛关注。这些环状酯是由羟基酸的缩合反应形成的，在各种自然过程中发挥着关键作用，并在工业和医学中有着广泛的应用。在本文中，我将探讨内酯的结构、性质及其重要性，强调它们在自然界和人类创新中的重要性。首先，内酯的独特环状结构使其与其他类型的酯区分开来。内酯的形成发生在羧酸的羟基与其自身的羰基反应时，导致闭合的环状分子。这一结构特征不仅影响了内酯的化学反应性，还对其稳定性和挥发性产生了影响。例如，许多天然存在的内酯以其愉悦的香气而闻名，使其在香料和调味品行业中具有价值。在自然界中，内酯由各种生物体（包括植物和真菌）产生。它们在植物信号传导和防御机制中发挥着重要作用。一个众所周知的例子是某些真菌产生的内酯，可以抑制竞争微生物的生长。这种天然抗真菌特性使得内酯在农业中作为潜在的生物杀虫剂受到探索，为合成化学品提供了一种环保的替代方案。此外，内酯在医药化学中也越来越受到重视。一些内酯表现出生物活性，使其成为药物开发的候选者。例如，抗生素化合物红霉素源自一种特定类型的内酯。其抑制细菌蛋白质合成的能力使其成为治疗各种感染的重要工具。研究人员继续探索其他内酯的治疗潜力，旨在发现可以对抗耐药菌株和其他病原体的新药。除了生物学意义外，内酯还被广泛应用于各类工业。它们通常用作溶剂、增塑剂和其他化学品合成的中间体。内酯的多功能性使其能够被纳入从化妆品到药品的各种产品中。它们增强配方的稳定性和性能的能力使其在许多行业中不可或缺。总之，内酯是一组引人入胜的化合物，在科学研究和实际应用中具有巨大潜力。它们独特的结构和性质使其在自然界中发挥至关重要的作用，促进医学进步，并服务于各种工业用途。随着我们继续研究和理解内酯，我们可能会为未来的创新和可持续发展开辟新的可能性。对这些化合物的持续探索强调了化学与生命的相互联系，提醒我们自然产品在塑造我们未来中的重要性。