acid number

简明释义

酸价

英英释义

例句

1.The acid number 酸值 can be used to predict the shelf life of the product.

可以利用酸值 acid number来预测产品的保质期。

2.Monitoring the acid number 酸值 helps in assessing the degradation of the oil over time.

监测酸值 acid number有助于评估油品随时间的降解情况。

3.A higher acid number 酸值 indicates more free fatty acids present in the sample.

较高的酸值 acid number表示样品中存在更多游离脂肪酸。

4.We need to test the acid number 酸值 of this lubricant to ensure it meets industry standards.

我们需要测试这种润滑剂的酸值 acid number以确保其符合行业标准。

5.The oil's acid number 酸值 is an important factor in determining its quality.

油的酸值 acid number是决定其质量的重要因素。

作文

The term acid number refers to a critical measurement in the field of chemistry and material science, particularly concerning the quality and stability of various substances such as oils, fats, and lubricants. It is defined as the amount of potassium hydroxide (KOH) in milligrams that is required to neutralize one gram of a substance. This measurement is essential because it indicates the presence of free fatty acids in oils and fats, which can significantly affect their quality and usability. A higher acid number suggests a higher concentration of these free fatty acids, which can lead to undesirable properties such as rancidity, corrosion, and decreased shelf life.In the food industry, for instance, the acid number is crucial for assessing the quality of edible oils. When oils undergo hydrolysis or oxidation, they can develop free fatty acids, resulting in an increased acid number. This change not only affects the flavor and aroma of the oil but also its nutritional value. Therefore, manufacturers routinely test the acid number to ensure that their products meet safety standards and consumer expectations. If the acid number exceeds acceptable levels, the oil may be deemed unsuitable for consumption, leading to economic losses and potential health risks.In addition to its significance in food quality control, the acid number also plays a vital role in the production and maintenance of lubricants. Lubricants are essential for reducing friction and wear in machinery and engines. However, over time, lubricants can degrade, leading to an increase in the acid number. This increase indicates the formation of acidic compounds through oxidation or contamination, which can corrode engine components and reduce the lubricant's effectiveness. Regular monitoring of the acid number helps in determining when to replace or refresh lubricants, thereby extending the life of machinery and ensuring optimal performance.Moreover, the acid number is not limited to just oils and fats; it is also relevant in the manufacturing of biodiesel. Biodiesel, produced from vegetable oils or animal fats, must have a low acid number to ensure efficient production and high-quality fuel. A high acid number in feedstock can lead to complications during the transesterification process, resulting in lower yields and poor-quality biodiesel. Therefore, testing the acid number of feedstock before production is a standard practice in the biodiesel industry.In conclusion, the acid number is a vital parameter across various industries, including food, lubricants, and biofuels. Its measurement provides insights into the quality and stability of products, helping manufacturers maintain standards and ensure safety. Understanding the implications of the acid number allows producers to take necessary actions to improve product quality, thus benefiting both consumers and the industry as a whole. As technology advances and new materials are developed, the importance of monitoring the acid number will likely continue to grow, highlighting the need for ongoing research and innovation in this field.

“酸值”是化学和材料科学领域中的一个重要测量，特别涉及各种物质（如油、脂肪和润滑剂）的质量和稳定性。它被定义为中和一克物质所需的氢氧化钾（KOH）毫克数。这个测量至关重要，因为它指示了油和脂肪中游离脂肪酸的存在，这会显著影响其质量和可用性。较高的“酸值”表明这些游离脂肪酸的浓度较高，这可能导致不良特性，如腐败、腐蚀和缩短保质期。例如，在食品行业，“酸值”对评估食用油的质量至关重要。当油经历水解或氧化时，可能会产生游离脂肪酸，从而导致“酸值”的增加。这种变化不仅影响油的味道和香气，还影响其营养价值。因此，制造商定期测试“酸值”，以确保其产品符合安全标准和消费者期望。如果“酸值”超过可接受的水平，该油可能被认为不适合消费，从而导致经济损失和潜在的健康风险。除了在食品质量控制中的重要性外，“酸值”在润滑剂的生产和维护中也发挥着至关重要的作用。润滑剂对于减少机械和发动机中的摩擦和磨损至关重要。然而，随着时间的推移，润滑剂可能会降解，导致“酸值”的增加。这一增加表明通过氧化或污染形成了酸性化合物，这可能会腐蚀发动机部件并降低润滑剂的有效性。定期监测“酸值”有助于确定何时更换或更新润滑剂，从而延长机械的使用寿命并确保最佳性能。此外，“酸值”不仅限于油和脂肪；在生物柴油的生产中，它也很相关。生物柴油是由植物油或动物脂肪生产的，必须具有较低的“酸值”以确保高效的生产和高质量的燃料。原料中高“酸值”可能导致在酯交换过程中出现并发症，导致产量降低和生物柴油质量差。因此，在生产之前测试原料的“酸值”是生物柴油行业的标准做法。总之，“酸值”是各个行业（包括食品、润滑剂和生物燃料）中的重要参数。它的测量提供了产品质量和稳定性的见解，帮助制造商维持标准并确保安全。理解“酸值”的影响使生产者能够采取必要措施改善产品质量，从而使消费者和整个行业受益。随着技术的进步和新材料的发展，监测“酸值”的重要性可能会继续增长，突显出在这一领域持续研究和创新的必要性。