provitamin

简明释义

英[prəʊˈvɪtəmɪn]美[proʊˈvaɪtəmɪn]

n. 维他命原；前维生素；维生素原

英英释义

单词用法

同义词

反义词

例句

1.A vitamin precursor that the body converts to its active form through normal metabolic processes. Carotene for example is a provitamin of vitamin a.

维生素原一种由身体通过正常新陈代谢过程，将其转化成活跃形式的维生素的前体，比如，胡萝卜素是维生素a的维生素原。

2.Ingredient: Green tea essence, Provitamin B5 etc.

主要成份：绿茶精华、维他命原b5等。

3.Sorbitol and provitamin B5 have intensive moisturizing properties and also protect the extremely fine skin around the eyes area from further moisture loss.

山梨醇和维生素原b 5密集保湿的属性，同时保护进一步的水分流失的眼睛周围的皮肤极其精细的。

4.Lift and separate your lashes and brows with this clear gel mascara. Formulated with ProVitamin B5 to strengthen and nourish lashes.

此款透明眼睫毛膏含维生素原B5配方不仅可以让眼睫毛保持卷曲和根根分明，同时可以滋养眼睫毛，加强眼睫毛韧性。

5.Main ingredients: Rose essence, moisturizing factor, provitamin B5 and vitamin e.

主要成分：玫瑰花精华、保湿因子、维他命原b 5、维他命e。

6.Sorbitol and provitamin B5 have intensive moisturizing properties and also protect the extremely fine skin around the eyes area from further moisture loss.

山梨醇和维生素原b 5密集保湿的属性，同时保护进一步的水分流失的眼睛周围的皮肤极其精细的。

7.Some dietary supplements contain provitamins to support skin health.

一些膳食补充剂含有前维生素以支持皮肤健康。

8.The term provitamin refers to compounds that can be converted into vitamins in the body.

术语前维生素指的是可以在体内转化为维生素的化合物。

9.Carrots are rich in beta-carotene, a type of provitamin that the body converts into vitamin A.

胡萝卜富含β-胡萝卜素，这是一种身体转化为维生素A的前维生素。

10.Spinach is an excellent source of provitamins, particularly lutein and zeaxanthin.

菠菜是优质的前维生素来源，特别是叶黄素和玉米黄质。

11.Many fruits and vegetables contain provitamins that can help improve our overall health.

许多水果和蔬菜含有可以帮助改善我们整体健康的前维生素。

作文

In the realm of nutrition, the term provitamin refers to a substance that can be converted into a vitamin within the body. This concept is crucial for understanding how our bodies utilize various nutrients to maintain health and vitality. For instance, one of the most well-known provitamins is beta-carotene, which is found in carrots and other colorful fruits and vegetables. When consumed, beta-carotene is converted into vitamin A, an essential nutrient for vision, immune function, and skin health.The significance of provitamins extends beyond just vitamin A. There are several other provitamins that play vital roles in our diet. For example, vitamin D can be synthesized in the skin from cholesterol when exposed to sunlight, but it can also be derived from dietary sources such as fish liver oil or fortified foods. This dual pathway demonstrates how certain compounds can act as provitamins under specific conditions, ensuring that our bodies receive adequate nutrition.Moreover, the presence of provitamins in our diet underscores the importance of consuming a variety of foods. A diet rich in fruits, vegetables, whole grains, and healthy fats provides the body with numerous provitamins that can be transformed into essential vitamins. This diversity not only supports overall health but also enhances our ability to absorb and utilize these nutrients effectively.In recent years, there has been growing interest in the role of provitamins in disease prevention. Research suggests that diets high in provitamins, particularly those from plant sources, may lower the risk of chronic diseases such as heart disease, diabetes, and certain cancers. For instance, antioxidants found in many provitamins help combat oxidative stress, which is linked to aging and various health issues.However, it is essential to recognize that while provitamins can be beneficial, they should not be relied upon exclusively for health. The conversion process of provitamins to active vitamins can vary based on individual metabolism, age, and overall health status. Therefore, it is crucial to maintain a balanced diet that includes both provitamins and preformed vitamins to ensure optimal health.In conclusion, the concept of provitamins highlights the intricate relationship between our diet and health. By understanding what provitamins are and how they function, we can make more informed choices about our nutrition. Emphasizing a diverse intake of foods rich in provitamins not only supports our body's vitamin needs but also promotes overall well-being. As we continue to learn more about nutrition and its impact on health, the role of provitamins will undoubtedly remain a key area of interest for both researchers and health enthusiasts alike.

在营养学领域，术语provitamin指的是一种可以在体内转化为维生素的物质。这个概念对于理解我们身体如何利用各种营养素来维持健康和活力至关重要。例如，最著名的provitamin之一是β-胡萝卜素，它存在于胡萝卜和其他色彩丰富的水果和蔬菜中。当被摄入后，β-胡萝卜素会转化为维生素A，这是一种对视力、免疫功能和皮肤健康至关重要的营养素。provitamins的重要性不仅限于维生素A。还有其他几种provitamins在我们的饮食中发挥着重要作用。例如，维生素D可以在皮肤中从胆固醇合成，当暴露在阳光下时，但它也可以通过鱼肝油或强化食品等饮食来源获得。这种双重途径展示了某些化合物如何在特定条件下作为provitamins发挥作用，确保我们的身体获得足够的营养。此外，饮食中存在的provitamins强调了摄入多样化食物的重要性。富含水果、蔬菜、全谷物和健康脂肪的饮食为身体提供了大量的provitamins，这些物质可以转化为必需的维生素。这种多样性不仅支持整体健康，还增强了我们有效吸收和利用这些营养素的能力。近年来，人们对provitamins在疾病预防中所起的作用越来越感兴趣。研究表明，富含植物来源的provitamins的饮食可能降低慢性疾病的风险，例如心脏病、糖尿病和某些癌症。例如，许多provitamins中的抗氧化剂有助于抵御氧化压力，而氧化压力与衰老和各种健康问题有关。然而，必须认识到，虽然provitamins可能是有益的，但不应仅依赖它们来保持健康。provitamins转化为活性维生素的过程可能因个体的新陈代谢、年龄和整体健康状况而异。因此，保持均衡的饮食，包括provitamins和已形成的维生素，对于确保最佳健康至关重要。总之，provitamins的概念突显了我们的饮食与健康之间错综复杂的关系。通过理解什么是provitamins及其功能，我们可以更明智地选择我们的营养。强调摄入丰富的provitamins的多样化食物，不仅支持我们身体对维生素的需求，还促进整体健康。随着我们继续了解更多关于营养及其对健康的影响，provitamins的作用无疑将继续成为研究人员和健康爱好者关注的重点领域。