Detection of peroxide gives the initial evidence of rancidity in unsaturated fats and oils. Other methods are available, but peroxide value is the most widely used. It gives a measure of the extent to which an oil sample has undergone primary oxidation; extent of secondary oxidation may be determined from p-anisidine test.[1]
The double bonds found in fats and oils play a role in autoxidation. Oils with a high degree of unsaturation are most susceptible to autoxidation. The best test for autoxidation (oxidative rancidity) is determination of the peroxide value. Peroxides are intermediates in the autoxidation reaction.
Autoxidation is a free radical reaction involving oxygen that leads to deterioration of fats and oils which form off-flavours and off-odours. Peroxide value, concentration of peroxide in an oil or fat, is useful for assessing the extent to which spoilage has advanced.
^Chemistry And Technology Of Oils And Fats Chemistry And Technology Of Oils And Fats By Dr. M.M. Chakrabarty Archived 2018-09-25 at the Wayback Machine
Detection of peroxide gives the initial evidence of rancidity in unsaturated fats and oils. Other methods are available, but peroxidevalue is the most...
by 100 grams of a given substance Peroxidevalue – Measure of peroxide content of a fat or oil Saponification value – Milligrams of a base required to...
Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid that is slightly more viscous than water...
Mass of iodine absorbed by 100 grams of a given substance Peroxidevalue – Measure of peroxide content of a fat or oil Saponification – Process that converts...
Acid number Amine value Argentation chromatography Bromine number Epoxy value Hydroxyl valuePeroxidevalue Saponification value ^ The interaction between...
complicated AOM (active oxygen method), which is based on measuring peroxidevalues for determining the induction time of fats and oils. Over time, the...
-MXDA. Amine value = 825 Acid value Bromine number Epoxy value Hydroxyl value Iodine valuePeroxidevalue Saponification value Howarth, G.A (1995). "5". In...
rancidity. Another measure of the oil's chemical degradation is the peroxidevalue, which measures the degree to which the oil is oxidized by free radicals...
Acetone peroxide (/æsəˈtəʊn pɛrˈɒksaɪd/ also called APEX and mother of Satan) is an organic peroxide and a primary explosive. It is produced by the reaction...
in the ideal gas equation (PV=nRT) Protecting group, as Pv, Pivaloyl Peroxidevalue Perovskite (Pv), a mineral Page view, a metric in web analytics Semaphore...
bromination of all olefins. Acid value Epoxy value Hydroxyl value Iodine valuePeroxidevalue Saponification value Bromatometry Kuchar, Edward J. (1964)...
data Parameter Units Min Max FFA (oleic acid) % 1.5 Peroxidevalue meqO2/Kg 5.0 Saponification value mg/KOH/gr C:14:0 Myristic % 0.7 1.6 C:16:0 Palmitic...
oil acidity. The feasibility to measure olive oil free acidity and peroxidevalue by NIR spectroscopy in the wavenumber range 4,541 to 11,726 cm−1 was...
maximum size of bone particles, the maximum fat content (and its peroxidationvalue), and the minimum amount of protein and essential amino acids. Mechanically...
June 2022. Retrieved 15 October 2022. Vanhanen, L (2006). "The use of peroxidevalue as a measure of quality for walnut flour stored at five different temperatures...
Diacetyl peroxide is the organic peroxide with the formula (CH3CO2)2. It is a white solid or oily liquid with a sharp odor. As with a number of organic...
delivered as either hydrogen peroxide or carbamide peroxide. Hydrogen peroxide is analogous to carbamide peroxide as it is released when the stable complex is...
applications of the valued reagent mCPBA illustrate these reactions. Reaction of peroxycarboxylic acids with acid chlorides affords diacyl peroxides: RC(O)Cl +...
mg/kg have been reported in the literature and commercially. These high values provide antioxidant properties and a long shelf life for industrial, pharmaceutical...
gravity .88-0.914 Slip melting point 30-35 °C Peroxidevalue 4.0 Iodine value 38-42 Saponification value 187-193 Unsaponifiable matter 1.2% max Refractive...
formed is able to react with an oxygen molecule to form a peroxide compound. The process of peroxide formation is greatly accelerated by exposure to even low...
Included in this testing regime is the determination of free acidity, peroxidevalue, Ultraviolet light extinction, fatty acid composition, sterol composition...
Walter discovered that hydrazine hydrate was hypergolic with high-test peroxide of 80–83%. He was probably the first to discover this phenomenon, and set...
The oil has a good saponification value and the free fatty acid was found to be at 34.78 mg while the peroxidevalue of the oil is less i.e. 4.3mEq/Kg...
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