2022年7月25日 · While olive oil is technically acidic, it is the measurement of free fatty acids within the oil that attribute to the acidity of olive oil. The lower the amount of free fatty acids in the oil, the higher quality of the oil. Thus, when looking for good olive oil, pay close attention to the percentage of acid in the oil.

油酸（Oleic acid），化学式为C18H34O2 。是一种单不饱和Omega-9脂肪酸，存在于动植物体内。将油酸加氢加成得到硬脂酸。油酸的双键反式异构体称为反油酸。油酸能调节血脂水平，降低胆固醇，有效减少高胆固醇血症及心血管疾病的发生，降低患冠心病的几率。

2021年3月1日 · The reason that a high acidity is an issue is the nature of the oil, an acidic oil is exactly that it is acidic! The acidity is created by the reaction of the oil with oxygen resulting in an oxidation process and formation of compounds such as alcohols, carbonyls, acids and then sludges which are aggressive compounds which will degrade ...

There is a common misconception that olive oil is highly acidic. However, the truth is that olive oil is actually a low-acid food. The pH level of olive oil can vary depending on factors such as the type of olives used, the production process, and the storage conditions.

Olive oil contains small amounts of free fatty acids (meaning not attached to other fatty acids in the form of a triglyceride). Free acidity is an important parameter that defines the quality of olive oil. It is usually expressed as a percentage of oleic acid (the main fatty acid present in olive oil

While olive oil is primarily alkaline, it also contains some acidic components. The acidity of olive oil is usually measured by its free fatty acid content. Extra virgin olive oil, which is considered the highest quality, has the lowest level of acidity, typically below 0.8%.

Acid oils (AO) and fatty acid distillates (FAD) are oil refining by-products rich in free fatty acids. The objective of this study is their characterization and the identification of their sources of variability so that they can be standardized to improve their use as feed ingredients.

Simply stated, a low level of free fatty acids is an indicator of better olive oil. So, an acidity level of 0.8 percent is average, 0.5 percent is good and 0.3 percent is considered the highest quality.

In the production of lubricants, additives are added to the base oils, which are usually a little "acidic". Especially additives to improve wear or corrosion protection are based on slightly acidic compounds. Even engine oils whose additives have a primarily alkaline effect already have some acid-reacting components as fresh oil.

Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. It is an odorless, colorless oil, although commercial samples may be yellowish due to the presence of impurities.