Peroxide value in vegetable oil
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Analysis of Peroxide value in vegetable oils can be carried out by OxiTester using micro quantities of raw sample with practical, fast and extremely accurate methods. So in junt a few menutes you can determine peroxides number of olive oil, palm oil, avocado oil etc. to verify their oxidative status.
The number of peroxides present in a vegetable oil is an index of its primary oxidative level and consequently of its tendency to go rancid.
Insaturated free fatty acids react with oxygen and form peroxides, which determine a series of chain reactions that generate the production of volatile substances that bring the typical rancid smell. Those reactions are accelerated by high temperature and by light and oxygen exposure.
The chemical analysis used to determine the number of peroxides of vegetable oils is an index of its status of preservation. In fact, the lower is the number of peroxides, the better is fat or oil quality and its status of preservation.
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Instrument
Reagents
R1 (in cuvette): alcoholic mixture
R2 (in vial): Redox solution
Test method
Test type: End Point
Colorimetric reaction at 505 nm
Testing time: 5-8 minutes
It is possible to carry out several test sessions with a maximum of 14 samples.
Calibration can be performed by aligning the test to reference values.
Test principle
R-O-O-R peroxides oxidize Fe++ ions. The Fe+++ ions resulting from oxidation are grouped and form a red complex. Its colorimetric intensity, measured at 505 nm, is directly proportional to the concentration of peroxides in the sample. CDR innovative method simplifies and speeds up the standard procedure, because it enables the test to be carried with micro-quantities and to be applied to fats that are difficult to extract.
Sample
Vegetable raw oil like olive oil, palm oil, avocado oil, etc. as is.
Kit
The reagents are provided in sealed bags, each containing 10 test tubes. They have a 12 months duration, starting from the production date. Stocking requirements are described on the bag label.
Reagents do not contain dangerous solvents and are ready for use.
Request more information about peroxide value analysis in vegetable oils: click and contact us
Related arguments
Determination of peroxide value in edible fats and oils
Determination of peroxide value in essential oils
Determination of peroxide value of oil extracted from dry fruit
| CODICE KIT | VOLUME CAMPIONE | RANGE |
| *300159A (20 test) *300150A (100 test) |
2.5-5.0 µL | 0.3-50 mEqO2/Kg |
