nonessential amino acid

简明释义

非必需氨基酸

英英释义

例句

1.The body can synthesize nonessential amino acids, which means they do not need to be obtained from the diet.

身体可以合成非必需氨基酸，这意味着它们不需要从饮食中获取。

2.Some athletes focus on getting enough protein, but they often overlook the importance of nonessential amino acids.

一些运动员专注于摄取足够的蛋白质，但他们常常忽视非必需氨基酸的重要性。

3.Glutamine is a popular supplement because it is a nonessential amino acid that supports recovery.

谷氨酰胺是一种流行的补充剂，因为它是一种支持恢复的非必需氨基酸。

4.Unlike essential amino acids, nonessential amino acids can be produced by the human body.

与必需氨基酸不同，非必需氨基酸可以由人体合成。

5.Certain foods are rich in nonessential amino acids, such as beans and nuts.

某些食物富含非必需氨基酸，例如豆类和坚果。

作文

Amino acids are the building blocks of proteins and play a crucial role in various biological processes. Among the different types of amino acids, there are two main categories: essential and nonessential amino acids. The term nonessential amino acid refers to those amino acids that our bodies can synthesize on their own, meaning they do not need to be obtained directly from our diet. This is in contrast to essential amino acids, which must be acquired through food because the body cannot produce them. There are eleven nonessential amino acids: alanine, aspartic acid, asparagine, glutamic acid, serine, proline, glycine, cysteine, tyrosine, arginine, and ornithine. Each of these amino acids plays a unique role in maintaining health and supporting bodily functions. For instance, alanine is vital for energy production and the metabolism of glucose, while glutamic acid is important for brain function and neurotransmission.The body’s ability to produce nonessential amino acids highlights its remarkable adaptability. When we consume protein-rich foods, our digestive system breaks down these proteins into their constituent amino acids. From there, our body can use these amino acids to create the specific nonessential amino acids it requires, depending on its needs at any given time. This means that even if our diet is lacking in certain amino acids, our body can still maintain a balance by synthesizing what it needs.However, it is essential to remember that while nonessential amino acids can be produced by the body, this does not diminish their importance. These amino acids are involved in numerous physiological processes, including the synthesis of hormones, enzymes, and neurotransmitters. For example, tyrosine is a precursor for dopamine, a neurotransmitter that plays a significant role in mood regulation and cognitive function.Moreover, some nonessential amino acids become conditionally essential during times of stress or illness. For instance, during periods of rapid growth, illness, or physical trauma, the body may require more of certain amino acids than it can produce. In such cases, it is crucial to ensure an adequate intake of dietary protein to support the increased demand for these amino acids.In conclusion, understanding the concept of nonessential amino acids is fundamental to appreciating the complexity of human nutrition and physiology. While they are termed 'nonessential' because the body can produce them, their roles are vital for overall health and well-being. A balanced diet that includes a variety of protein sources can help ensure that the body has the necessary building blocks to synthesize both essential and nonessential amino acids, supporting optimal health throughout life.

氨基酸是蛋白质的基本组成部分，在各种生物过程中发挥着至关重要的作用。在不同类型的氨基酸中，主要分为两类：必需氨基酸和非必需氨基酸。术语非必需氨基酸指的是那些我们身体能够自行合成的氨基酸，这意味着它们不需要直接从饮食中获取。这与必需氨基酸形成对比，后者必须通过食物摄取，因为身体无法生产它们。共有十一种非必需氨基酸：丙氨酸、天冬氨酸、天冬酰胺、谷氨酸、丝氨酸、脯氨酸、甘氨酸、半胱氨酸、酪氨酸、精氨酸和鸟氨酸。这些氨基酸在维持健康和支持身体功能方面各自发挥着独特的作用。例如，丙氨酸对能量生产和葡萄糖代谢至关重要，而谷氨酸则对大脑功能和神经传递非常重要。身体合成非必需氨基酸的能力突显了其惊人的适应性。当我们摄入富含蛋白质的食物时，消化系统会将这些蛋白质分解成其组成氨基酸。然后，身体可以根据其在任何给定时间的需求使用这些氨基酸来合成所需的特定非必需氨基酸。这意味着，即使我们的饮食缺乏某些氨基酸，身体仍然可以通过合成所需的氨基酸来维持平衡。然而，重要的是要记住，虽然非必需氨基酸可以由身体产生，但这并不减少它们的重要性。这些氨基酸参与许多生理过程，包括激素、酶和神经递质的合成。例如，酪氨酸是多巴胺的前体，多巴胺是一种在情绪调节和认知功能中发挥重要作用的神经递质。此外，某些非必需氨基酸在压力或疾病期间会变得条件性必需。例如，在快速生长、疾病或身体创伤期间，身体可能需要比其能生产的更多某些氨基酸。在这种情况下，确保足够的膳食蛋白质摄入以支持对这些氨基酸增加的需求至关重要。总之，理解非必需氨基酸的概念对于欣赏人类营养和生理学的复杂性至关重要。虽然它们被称为“非必需”，因为身体可以生产它们，但它们的作用对整体健康和幸福至关重要。均衡的饮食，包括多种蛋白质来源，可以帮助确保身体拥有合成必需和非必需氨基酸所需的基本构件，从而在整个生命中支持最佳健康。