ascorbic acid

简明释义

抗坏血酸

英英释义

例句

1.The food industry adds ascorbic acid to products as a preservative and to enhance flavor.

食品工业在产品中添加抗坏血酸作为防腐剂并增强风味。

2.Citrus fruits like oranges and lemons are excellent sources of ascorbic acid.

柑橘类水果如橙子和柠檬是优质的抗坏血酸来源。

3.Doctors often recommend ascorbic acid supplements to help patients recover from colds more quickly.

医生通常建议患者服用抗坏血酸补充剂，以帮助他们更快地从感冒中恢复。

4.A deficiency in ascorbic acid can lead to scurvy, a disease characterized by weakness and anemia.

缺乏抗坏血酸会导致坏血病，这是一种以虚弱和贫血为特征的疾病。

5.Many fruits and vegetables are rich in ascorbic acid, which is essential for maintaining a healthy immune system.

许多水果和蔬菜富含抗坏血酸，这对维持健康的免疫系统至关重要。

作文

Vitamin C, scientifically known as ascorbic acid, is an essential nutrient for humans and plays a vital role in various bodily functions. This water-soluble vitamin is crucial for the growth and repair of tissues in the body. It is also an important antioxidant, helping to protect cells from damage caused by free radicals. The human body cannot synthesize ascorbic acid, which means it must be obtained through diet or supplements. Fruits and vegetables are the primary sources of ascorbic acid, with citrus fruits like oranges and lemons being particularly rich in this nutrient. Other sources include strawberries, kiwi, bell peppers, and broccoli.The significance of ascorbic acid extends beyond its nutritional value; it plays a critical role in the synthesis of collagen, a protein that helps maintain the structure of skin, blood vessels, and bones. Collagen is essential for wound healing, and adequate levels of ascorbic acid are necessary for the body to produce this vital protein. Without sufficient ascorbic acid, individuals may experience delayed wound healing and increased susceptibility to bruising.Moreover, ascorbic acid is involved in the absorption of iron from plant-based foods. This is particularly important for individuals who follow vegetarian or vegan diets, as they may be at a higher risk of iron deficiency. By enhancing iron absorption, ascorbic acid helps prevent anemia and promotes overall health.The recommended daily intake of ascorbic acid varies by age, gender, and life stage. For most adults, the recommended dietary allowance (RDA) is 65 to 90 milligrams per day. However, some individuals may need higher amounts, such as pregnant or breastfeeding women, smokers, and those under physical stress. While it is possible to obtain sufficient ascorbic acid through a balanced diet, some people may choose to take supplements to ensure they meet their nutritional needs.Despite its many benefits, it is important to note that excessive intake of ascorbic acid can lead to adverse effects. High doses, particularly from supplements, can cause gastrointestinal disturbances such as diarrhea and stomach cramps. Therefore, it is advisable to consult with a healthcare professional before starting any supplementation regimen.In conclusion, ascorbic acid is a vital nutrient that contributes significantly to our health. Its role in collagen synthesis, iron absorption, and as an antioxidant highlights its importance in maintaining overall well-being. By consuming a diet rich in fruits and vegetables, individuals can easily meet their daily requirements for ascorbic acid. Understanding the significance of this essential vitamin can help us make informed dietary choices and promote a healthier lifestyle.

维生素C，科学上称为抗坏血酸，是人类必需的营养素，对身体的各种功能起着至关重要的作用。这种水溶性维生素对身体组织的生长和修复至关重要。它也是一种重要的抗氧化剂，帮助保护细胞免受自由基造成的损害。人类身体无法合成抗坏血酸，这意味着必须通过饮食或补充剂来获得。水果和蔬菜是抗坏血酸的主要来源，柑橘类水果如橙子和柠檬尤其富含这种营养素。其他来源包括草莓、猕猴桃、甜椒和西兰花。抗坏血酸的重要性不仅在于其营养价值；它在胶原蛋白的合成中发挥着关键作用，胶原蛋白是一种帮助维持皮肤、血管和骨骼结构的蛋白质。胶原蛋白对伤口愈合至关重要，足够的抗坏血酸水平对身体产生这种重要蛋白质是必要的。如果缺乏足够的抗坏血酸，个体可能会经历伤口愈合延迟和淤血易感性增加。此外，抗坏血酸还参与植物性食物中铁的吸收。这对于遵循素食或严格素食饮食的人尤其重要，因为他们可能面临更高的缺铁风险。通过增强铁的吸收，抗坏血酸有助于防止贫血并促进整体健康。抗坏血酸的推荐每日摄入量因年龄、性别和生活阶段而异。对于大多数成年人，推荐的膳食摄入量（RDA）为每天65到90毫克。然而，一些个体可能需要更高的摄入量，例如孕妇、哺乳期女性、吸烟者和处于身体压力下的人。虽然通过均衡饮食可以获得足够的抗坏血酸，但一些人可能选择补充剂以确保满足营养需求。尽管有许多好处，但值得注意的是，过量摄入抗坏血酸可能会导致不良反应。特别是来自补充剂的高剂量可能导致胃肠道不适，如腹泻和胃痉挛。因此，在开始任何补充方案之前，建议咨询医疗专业人士。总之，抗坏血酸是对我们健康至关重要的营养素。它在胶原蛋白合成、铁吸收和作为抗氧化剂方面的作用突显了其在维持整体健康中的重要性。通过摄入富含水果和蔬菜的饮食，个体可以轻松满足每日抗坏血酸的需求。了解这种必需维生素的重要性可以帮助我们做出明智的饮食选择，促进更健康的生活方式。