iodine number

简明释义

碘值

英英释义

例句

1.In the laboratory, we determined the iodine number of several vegetable oils.

在实验室中，我们测定了几种植物油的碘值。

2.The iodine number is a measure of the unsaturation of fats and oils.

碘值是衡量脂肪和油脂不饱和度的指标。

3.The iodine number can help in identifying the type of oil used in food products.

碘值可以帮助识别食品中使用的油的类型。

4.A higher iodine number indicates more double bonds in the fatty acids.

更高的碘值表示脂肪酸中有更多的双键。

5.To assess the quality of the oil, we measured the iodine number before and after refining.

为了评估油的质量，我们在精炼前后测量了碘值。

作文

The concept of the iodine number is crucial in the field of chemistry, particularly in the study of unsaturated fatty acids and oils. The iodine number, or 碘值 in Chinese, is a measure of the degree of unsaturation in a fat or oil. It indicates how many grams of iodine can be absorbed by 100 grams of a substance. This property is essential for understanding the chemical composition and characteristics of various oils and fats, which play significant roles in industries ranging from food production to cosmetics.To comprehend the importance of the iodine number, one must first recognize the structure of fatty acids. Fatty acids can be classified as saturated or unsaturated based on their molecular structure. Saturated fatty acids have no double bonds between carbon atoms, while unsaturated fatty acids contain one or more double bonds. The presence of these double bonds is what the iodine number quantifies.For instance, consider vegetable oils, which often have high iodine numbers. These oils, such as sunflower or soybean oil, are rich in unsaturated fats, making them healthier options compared to saturated fats found in animal products. A higher iodine number suggests that the oil is more fluid and less likely to solidify at room temperature, which is desirable for many culinary applications.In contrast, fats with lower iodine numbers, like butter or lard, are predominantly saturated and tend to be solid at room temperature. Understanding the iodine number helps consumers make informed choices about dietary fats, as unsaturated fats are generally considered healthier than saturated ones. Beyond dietary implications, the iodine number is also significant in the manufacturing and processing of oils. For example, in the production of biodiesel, the iodine number can influence the fuel's properties, such as its stability and cold flow characteristics. Manufacturers often strive to achieve specific iodine numbers to meet regulatory standards and optimize performance.Moreover, the iodine number is not limited to oils and fats; it is also applicable in the analysis of various organic compounds. In the pharmaceutical industry, the iodine number can help in assessing the quality and purity of raw materials. By determining the iodine number, chemists can infer the extent of unsaturation, which can affect the reactivity and stability of compounds.In conclusion, the iodine number serves as a vital indicator of the unsaturation level in fats and oils, influencing both health and industrial applications. Its role extends beyond mere measurement; it encompasses aspects of nutrition, product formulation, and quality control. As consumers and manufacturers continue to prioritize health and sustainability, understanding the iodine number will remain essential in making informed decisions about the fats and oils we use in our daily lives.

“碘值”这一概念在化学领域中至关重要，特别是在不饱和脂肪酸和油的研究中。“碘值”，即iodine number，是衡量脂肪或油的不饱和程度的指标。它表示每100克物质可以吸收多少克碘。这一特性对于理解各种油脂的化学组成和特性至关重要，这些油脂在从食品生产到化妆品等多个行业中发挥着重要作用。要理解iodine number的重要性，首先必须认识到脂肪酸的结构。脂肪酸可以根据其分子结构分为饱和和不饱和。饱和脂肪酸在碳原子之间没有双键，而不饱和脂肪酸则含有一个或多个双键。iodine number正是用来量化这些双键的存在。例如，考虑植物油，它们通常具有较高的iodine numbers。这些油，如葵花籽油或大豆油，富含不饱和脂肪，使其相比于动物产品中的饱和脂肪成为更健康的选择。较高的iodine number表明该油在室温下更流动，更不容易固化，这在许多烹饪应用中是理想的。相反，具有较低iodine numbers的脂肪，如黄油或猪油，主要是饱和的，倾向于在室温下固体。理解iodine number有助于消费者做出关于饮食脂肪的明智选择，因为不饱和脂肪通常被认为比饱和脂肪更健康。除了饮食影响外，iodine number在油的制造和加工中也很重要。例如，在生物柴油的生产中，iodine number会影响燃料的性质，如其稳定性和冷流特性。制造商通常努力实现特定的iodine numbers以满足监管标准并优化性能。此外，iodine number不仅限于油脂和脂肪；它同样适用于各种有机化合物的分析。在制药行业中，iodine number可以帮助评估原材料的质量和纯度。通过确定iodine number，化学家可以推断不饱和程度，这可能会影响化合物的反应性和稳定性。总之，iodine number作为脂肪和油的不饱和水平的重要指标，对健康和工业应用产生了影响。它的作用不仅限于测量；它涉及营养、产品配方和质量控制的各个方面。随着消费者和制造商继续优先考虑健康和可持续性，理解iodine number将继续在我们日常生活中使用的脂肪和油的明智决策中发挥重要作用。