alkaloids

简明释义

英[ˈæl.kə.lɔɪdz]美[ˈæl.kə.lɔɪdz]

n. [有化] 生物碱；生物碱类

英英释义

单词用法

同义词

反义词

例句

1.Alkaloids are one of the effective physiological activity components in many medicine herbs.

生物碱是一类具有生理活性的物质，是许多药用植物的有效成分之一。

2.Containing alkaloids or derivatives thereof but not containing hormones, other products of heading no. 29, 37 or antibiotics.

含有生物碱及其衍生物，但不含抗菌素及税目29.37的激素或其他产品。

3.Objective:To investigate the diterpenoid alkaloids from Aconitum bulleyanum.

目的：研究滇西乌头的二萜生物碱成分。

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.Their bright coloration is associated with their toxicity and levels of alkaloids.

它们明亮的颜色下，伴随着是毒液了高浓度生物碱！

6.Objective To study the alkaloids from Aconitum handelianum.

目的研究剑川乌头中的二萜生物碱。

7.The analysis result showed that the contents of total alkaloids in hairy roots were higher than explants and calli.

检测结果表明，毛状根中的总生物碱含量高于长春花的原植株和愈伤组织。

8.Many plants produce alkaloids to deter herbivores.

许多植物产生生物碱来阻止食草动物。

9.Researchers are studying the effects of alkaloids on cancer cells.

研究人员正在研究生物碱对癌细胞的影响。

10.Some alkaloids have medicinal properties and are used in pharmaceuticals.

一些生物碱具有药用特性，并用于制药。

11.Caffeine is a well-known example of a stimulant alkaloid found in coffee.

咖啡因是咖啡中一种著名的兴奋剂生物碱。

12.The toxicity of certain alkaloids can pose risks to human health.

某些生物碱的毒性可能对人类健康构成风险。

作文

Alkaloids are a group of naturally occurring organic compounds that mostly contain basic nitrogen atoms. They are predominantly found in plants and have significant effects on humans and animals. The term 'alkaloid' is derived from the Arabic word 'al-qaly,' which means 'the ashes of plants.' Alkaloids are known for their pharmacological properties and have been used for centuries in traditional medicine as well as in modern pharmaceuticals. Some well-known examples of alkaloids include caffeine, nicotine, morphine, and quinine. These compounds can have potent effects on the nervous system, making them valuable in treating various medical conditions.One of the most fascinating aspects of alkaloids (生物碱) is their diverse range of biological activities. For instance, caffeine, an alkaloid found in coffee and tea, acts as a stimulant that can enhance alertness and reduce fatigue. On the other hand, morphine, derived from the opium poppy, is a powerful analgesic used to relieve severe pain. This duality illustrates the importance of alkaloids (生物碱) in both enhancing human experiences and providing therapeutic benefits.In addition to their medicinal uses, alkaloids (生物碱) also play a crucial role in plant defense mechanisms. Many plants produce these compounds as a means of deterring herbivores and protecting themselves from pathogens. For example, the bitter taste of many plants is often attributed to the presence of alkaloids (生物碱), which makes them less palatable to potential threats. This natural defense strategy highlights the evolutionary significance of alkaloids (生物碱) in the survival of plant species.Moreover, the study of alkaloids (生物碱) has led to significant advancements in the field of chemistry and pharmacology. Researchers continue to explore the vast array of alkaloids (生物碱) present in different plant species, aiming to discover new compounds that could be developed into novel medications. The isolation and synthesis of alkaloids (生物碱) have paved the way for the development of various drugs that are now essential in modern medicine.However, it is important to note that while many alkaloids (生物碱) have beneficial effects, some can also be toxic or addictive. For instance, nicotine, found in tobacco, is highly addictive and can lead to serious health issues, including cancer and cardiovascular diseases. This underscores the need for caution when using alkaloids (生物碱) in both recreational and medicinal contexts.In conclusion, alkaloids (生物碱) are a fascinating class of compounds that hold immense significance in both nature and medicine. Their diverse range of effects, from therapeutic applications to ecological roles, makes them a subject of ongoing research and interest. As we continue to unravel the complexities of alkaloids (生物碱), it is essential to appreciate their potential benefits while also being mindful of their risks. Understanding these compounds better will not only enhance our knowledge of plant biology but also improve our ability to harness their properties for the benefit of human health and well-being.

生物碱是一类天然存在的有机化合物，主要含有基本的氮原子。它们主要存在于植物中，对人类和动物有显著影响。“生物碱”一词源自阿拉伯语“al-qaly”，意为“植物的灰烬”。生物碱因其药理特性而闻名，几个世纪以来一直被用于传统医学以及现代药物中。一些著名的生物碱例子包括咖啡因、尼古丁、吗啡和奎宁。这些化合物可以对神经系统产生强效，使其在治疗各种医疗条件中具有重要价值。生物碱（alkaloids）最迷人的方面之一是它们多样的生物活性。例如，咖啡因，存在于咖啡和茶中，是一种刺激剂，可以增强警觉性和减少疲劳。另一方面，吗啡，源自罂粟，是一种强效镇痛剂，用于缓解严重疼痛。这种双重性显示了生物碱在增强人类体验和提供治疗益处方面的重要性。除了其药用用途外，生物碱还在植物防御机制中发挥着至关重要的作用。许多植物产生这些化合物作为抵御食草动物和保护自己免受病原体侵害的手段。例如，许多植物的苦味通常归因于生物碱的存在，这使得它们对潜在威胁的可口性降低。这种自然防御策略突显了生物碱在植物物种生存中的进化重要性。此外，对生物碱的研究促进了化学和药理学领域的重大进展。研究人员继续探索不同植物物种中存在的广泛生物碱，旨在发现可以开发成新药的新化合物。生物碱的分离和合成为各种现在在现代医学中必不可少的药物的发展铺平了道路。然而，值得注意的是，虽然许多生物碱具有有益效果，但一些也可能是有毒或成瘾的。例如，烟草中的尼古丁是高度上瘾的，并可能导致严重的健康问题，包括癌症和心血管疾病。这强调了在娱乐和药用背景下使用生物碱时需要谨慎。总之，生物碱是一类令人着迷的化合物，在自然和医学中具有巨大意义。它们多样的效果，从治疗应用到生态角色，使它们成为持续研究和兴趣的主题。随着我们继续揭示生物碱的复杂性，欣赏它们的潜在益处，同时也要注意它们的风险，将是至关重要的。更好地理解这些化合物不仅会增强我们对植物生物学的知识，还将改善我们利用其特性造福人类健康和福祉的能力。