Peroxide value in dry fruit
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Using Foodlab System it is possible to carry out a chemical test for the determination of peroxides index of oils extracted from dry fruit, using micro quantity of sample.
The number of peroxides present in edible fat is an index of its primary oxidative level and consequently of its tendency to go rancid. The lower is the number of peroxides, the better is fat quality and its status of preservation.
Read also:
Determination of peroxide value in vegetable oils
Determination of peroxide value in edible fats and oils
Determination of peroxide value in essential oils
Instrument
Reagents
R1 (in cuvette): alcoholic mixture
R2 (in vial): Redox solution
Test method
End Point test
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
Oil extracted from dry fruit. CDR has developed an innovative system that can be used to perform a cold extyraction of oil using a press.
The system is pratical and quick. It uses very little quantities of dry fruit since only a micro quantity of sample oil is needed for the test. It does not need any solvent for the extraction.
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.
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| CODICE KIT | VOLUME CAMPIONE | RANGE |
| *300159 (20 test) *300150 (100 test) |
2,5 – 50 µL | 0,01 – 50 mEqO2/Kg |
