Significance of Acid value
Acid value is a crucial quantitative measurement that reflects the free fatty acid content in oils, ointments, and creams, indicating their quality and potential rancidity. It quantifies the milligrams of potassium hydroxide needed to neutralize these acids, thus highlighting the product's purity and shelf life. A lower acid value is generally associated with better oil quality and freshness. Understanding acid value is essential for assessing the stability and suitability of various oil-based formulations.
Synonyms: Acid number, Acidity
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
The concept of Acid value in scientific sources
Acid value measures free acids in oil, reflecting quality, potential rancidity, and freshness. It quantifies the potassium hydroxide required to neutralize organic acids, showcasing the oil's condition during storage and indicating its overall quality.
From: World Journal of Pharmaceutical Research
(1) A measure of the acidity of the cream, which can indicate the presence of free fatty acids.[1] (2) A measure of the free fatty acids present in oils, indicating potential rancidification and quality assessment of the sample.[2] (3) The acid value measures the number of milligrams of potassium hydroxide needed to neutralize the free fatty acids in one gram of fat, indicating the quality of oils.[3] (4) A measure of the free fatty acids present in the formulation, which can impact the cosmetic properties of the cream.[4] (5) The measure of free fatty acids in a fat or oil, indicative of its quality and the potential for rancidity if the value is high.[5]
From: International Ayurvedic Medical Journal
(1) The measure of free acids in a substance, indicating the potential for deterioration of the formulation.[6] (2) Indicates the presence of free fatty acids in the oil, important for assessing rancidity. Dashamoola Taila had an acid value of 6.52 mg KOH/g, whereas Dashamoola Ghrita had 4.44 mg KOH/g.[7] (3) The measure of free fatty acids in fats or oils, indicating their quality and potential rancidity.[8] (4) Indicates the quantity of free fatty acids in a sample; lower values are associated with better shelf life and reduced rancidity.[9] (5) A measure of the free acids in the oil, used to indicate the refinement of Sarjikakshara taila and its shelf life.[10]
From: AYU (Journal of Research in Ayurveda)
(1) A measurement that indicates the amount of free fatty acids in a fat, relevant for evaluating ghee and ointments.[11] (2) Acid value is a measurement indicating the amount of free fatty acids in Ghrita, which is related to its stability, quality, and potential rancidity.[12] (3) A measure of free fatty acids present in a substance, found to be 4.3968 w/v in Tulasi Amla Yashti Ghrita, indicating its quality.[13] (4) A measurement of the acidity of Brahmi Ghrita, indicating its quality and properties.[14] (5) Indicates the amount of free fat present in the oil, with implications on the freshness and rancidity of the oil.[15]
From: Journal of Ayurveda and Holistic Medicine
(1) The amount of potassium hydroxide needed to neutralize free fatty acids in a sample, indicating the sample's acidity.[16] (2) A measure of the free fatty acid content in the oil, which can indicate rancidity.[17] (3) The amount of potassium hydroxide required to neutralize free organic acids in 1 gram of a fat or oil, indicating the freshness and quality of the oil.[18] (4) A measure of the free fatty acids in fats and oils, which can determine their freshness and shelf stability.[19]
From: Journal of Ayurveda and Integrative Medicine
(1) A value representing the amount of free fatty acids in oils, which can indicate the freshness and quality of the fat.[20] (2) A measure indicating the amount of free fatty acids present in a fat, which increases with rancidity over time.[21] (3) A measure of the free acids in the cream formulation, which can affect skin irritation upon application.[22]
From: Ancient Science of Life
(1) A measurement used to assess the concentration of acidic compounds in '777 oil' before and after sunlight exposure.[23] (2) A measure indicating the amount of free fatty acids in the finished product of Somarajee tail.[24]
From: Ayushdhara journal
(1) A measure indicating the amount of acidic substances within a sample, useful in evaluating the quality of the Jaypal beeja after Shodhana.[25] (2) A measure of the free fatty acids present in a sample, indicating the quality and freshness of the oil.[26]