Acid value
Acid Value
The Acid Value (pronounced: /ˈæsɪd ˈvæljuː/) is a significant parameter in the field of Chemistry and Biochemistry, particularly in the analysis of fats and oils. It is a measure of the amount of free fatty acids present in a substance, usually expressed in milligrams of potassium hydroxide (KOH) required to neutralize the free acids in one gram of the sample.
Etymology
The term "Acid Value" is derived from the English words "acid", from the Latin acidus meaning sour, and "value", from the Old French value, meaning worth. In this context, it refers to the worth or significance of the acid content in a substance.
Related Terms
- Fatty Acids: These are carboxylic acids with long aliphatic chains, which can be either saturated or unsaturated. They are a key component in the structure of fats and oils.
- Saponification Value: This is another important parameter in the analysis of fats and oils. It is the amount of KOH required to saponify a given fat or oil sample.
- Iodine Value: This is a measure of the degree of unsaturation of a fat or oil, i.e., the amount of iodine that can be absorbed by the double bonds in the fatty acid chains.
- Peroxide Value: This is a measure of the extent to which a fat or oil has undergone oxidative rancidity. It is expressed in terms of milliequivalents of peroxide per kilogram of sample.
See Also
External links
- Medical encyclopedia article on Acid value
- Wikipedia's article - Acid value
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