CDR FoodLab® is the chemical analyzer for quality and process control that allows you to determine a wide range of parameters of many foods, animal feeds and pet foods.

Peroxide Value (POV) test in Oils and Fats

The amount of peroxides of fats indicate the degree of primary oxidation and therefore its likeliness of becoming rancid. A lower number of peroxides indicates a good quality of oil and a good preservation status.
Unsaturated free fatty acids react with oxygen and form peroxides, which determine a series of chain reactions that generate the production of smelling volatile substances. Those reactions are accelerated by high temperature and by light and oxygen exposure.

CDR innovative method simplifies and speeds up the standard procedure, because it enables the analysis to be carried out using micro-quantities of samples and to be applied to fats that are difficult to extract.

Features

  • Rapids results: 3 minutes ISO/AOCS compliant method.
  • Results are comparable to the ISO/AOCS method with very high correlation coefficients
  • Simple method: photometric method, low toxicity reagents pre-filled in disposable cuvettes.
  • test using micro-samples:suitable even to test fat substances that have a difficult extraction process.
  • Cost effective solution: rapid return on investment

Method

Principle of the test

R-O-O-R peroxides oxidise Fe2+ ions. The Fe3+ ions formed during oxidation are complexed to form a red coloured complex whose intensity, measured at 505 nm, is directly proportional to the concentration of peroxides in the sample. The innovative CDR method simplifies and speeds up the official procedure and, thanks to the micro-quantities of sample used, makes it possible to extend the analysis to fat samples that are difficult to extract.

The amount of POV of fats indicate the degree of primary oxidation and therefore its likeliness of becoming rancid. A lower number of peroxide value indicates a good quality of oil and a good preservation status.

Unsaturated free fatty acids react with oxygen and form POV, which determine a series of chain reactions that generate the production of smelling volatile substances. Those reactions are accelerated by high temperature and by light and oxygen exposure.

CDR innovative method simplifies and speeds up the standard procedure, because it enables the analysis to be carried out using micro-quantities of samples and to be applied to fats that are difficult to extract.

Calibration curve

The CDR method for the determination of peroxide value of oils and fats showed very good correlation with the reference method: AOCS Official Method Cd 8-53. In addition, the international reference laboratory Campden BRI carried out comparative tests between the CDR FoodLab® method for determining the peroxide value and the UKAS accredited titration method used by Campden BRI (Campden BRI Method TES-AC-360 based on ISO 3960 or AOCS Cd 8b-90 or AOAC 965.33): the correlation coefficient was R² = 0.9681, value that shows that the correlation between the two methods is very good.

Correlation curve of the CDR FoodLab® method with the reference method obtained by the international reference laboratory CampdenBri. R² = 0.9681

Reagent test Kits

Measuring range Fats and Oils

AnalysesMeasuring rangeResolutionRepeatability

Measuring range Flours

AnalysesMeasuring rangeResolutionRepeatability

Measuring range Bakery products

AnalysesMeasuring rangeResolutionRepeatability

Measuring range Essential oils

AnalysesMeasuring rangeResolutionRepeatability

The analyzers for oils and fats quality control

image

CDR FoodLab®

  • Complete analysis panel, supplied already configured
  • Up to 16 determinations simultaneously
  • Possibility of carrying out analyses of the same sample
  • Integrated printer
  • Full connections (LAN - USB - Bluetooth barcode/QR code reader)
image

CDR FoodLab® Jr

  • Partial analysis panel, supplied configured with 3 analyses of your choice, implementable
  • Up to 3 determinations simultaneously
  • Wireless connection to external printer
  • USB connections


 

...