The acids in vegetable oils consist mainly of free fatty acids, phosphoric acid, phosphates, and amino acids. These substances are inherent in vegetable oils but are also produced by storage and oxidative decomposition of the fats and oils themselves, and even include additives and their transformation products. The amount of free fatty acids present in a plant is measured by its acid value, known as the acid value of vegetable fats and oils. It is expressed as the amount of potassium hydroxide (KOH) required to neutralize the free fatty acids present in 1 g of fat, usually expressed as mgKOH/g. Determining acid value is one of the main indicators of the quality of vegetable fats and oils. On the one hand, the acid value is one of the important indexes to control and reflect the degree of oil refining; on the other hand, the oil in storage or use can be chemically reacted with oxygen in the air to generate a certain amount of organic acid. The greater the acid value of the oil, the greater the deterioration of the oil; therefore, the acid value is also one of the main indicators to determine the degree of rancidity of the oil. Lifeasible provides professional vegetable oils and fats acid value determination services for global customers to ensure that the quality of your vegetable oils and fats and the sanitary condition in line with the requirements of the laws and regulations.
Vegetable oils and fats are subject to rancidity during processing and storage due to exposure to air, light, temperature changes, microorganisms, and enzymes. Edible vegetable oils and fats are the sources of the food industry, and the quality of fats and oils is directly related to people's health level. As an expert in food chemistry and nutritional analysis, Lifeasible provides reliable analysis and testing services according to the corresponding standards for determining the acid value of vegetable oils and fats. Each stage of the analysis is carried out in a different laboratory to avoid any risk of contamination. A strict quality policy ensures the reliability of the analysis.
Standards for determining the acid value of vegetable fats and oils:
Our acid value of vegetable fats and oils detection services include but are not limited to:
| Detection Items | Detection Scope | Detection Methods | |
| Acid value Peroxide value Free fatty acid content Total saturated fatty acids Total polyunsaturated fatty acids Total trans fatty acids Refractive index Density Viscosity Impurity content |
Solubility Chloride content Moisture content Epoxy value Fatty acid composition Ester exchange value Degree of hydrolysis Freezing point Relative density … |
Peanut oil Corn oil Soybean oil Sesame oil Rapeseed oil Sunflower oil Palm oil Olive oil Linseed oil Castor oil, etc. |
Hot solvent method Color indicator method Artificial potentiometric titration Automatic potentiometric titration, etc. |
Lifeasible provides comprehensive content of the acid value of vegetable fats and oils detection and can design customized solutions according to your specific requirements. We hope that our products and technology can satisfy our customers. We look forward to your inquiry. For more information, please contact us.
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