Peroxide Value test in Fats and Oils

CDR FoodLab, chemical analysis system of  fats and oils, ideal solution for real time quality control

With the analysis systems in CDR FoodLab range, in just 4 minutes, without titration, using micro quantity of sample you can carry out the Peroxide Value test of edible Oils and fats like Olive oil, Nuts oil, Walnut oil, Peanut oil, Sunflower oil, castor oil, Palm oil and the other vegetable oils, butter, margarine, Fish oil, coocking oil, animal fats and so on. Absolutely no preparation for oil sample and a really easy one for fat sample. The method in compliant to AOCS Official Method Cd 8-53.

Features

  • Rapids results: 4 minute ISO/AOCS compliant method.
  • 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

Take a look! It’s fast and simple

 

Compliant to AOCS Method

CDR method shows a very good correlation with AOCS Official Method Cd 8-53.

peroxidevaluevsreference

Systems to test Free Fatty Acids in animal and vegetable fats and oils

  CDR FOODLAB CDR OXITESTER CDR PALMOILTESTER
Food Matrices Animal and vegetable fats and oils Olive Oil Palm Oil
Parameters FFA (Acidity)
Peroxide Value (PV)
p-Anisidine Value (AnV)
Soaps
Iodine Value in palm oil (IV)
Polyphenols in olive oil
Oxidative Stability Index (OSI) in olive oil
FFA (Acidity)
Peroxide Value (PV)
Polyphenols
Oxidative Stability Index (OSI)
K270
FFA (Acidity)
Peroxide Value (PV)
Iodine Value (IV)
DOBI
β carotene

Method

Test type: End Point
Testing time: 4 minutes – 70 Tests/Hour
It is possible to carry out several test sessions with a maximum of 16 samples.
The system is supplied pre-calibrated and ready for use.

Principle of the test

R-O-O-R peroxides oxidize Fe2+ ions. The Fe3+ 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. Results are expressed as meqO2/Kg.

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.

Composition of the Kit and Reagents

Code *300150: kit suitable for 100 tests, contains :
1) 10 bags with 10 pre-filled cuvette with reagent R1 (mix of alcohols and chromogenous compounds).
2) 2 bottles with R2 reagent (redox solution).

Code *300159: suitable for 20 tests, contains:
1) 2 bags with 10 pre-filled cuvette with reagent R1 (mix of alcohols and chromogenous compounds).
2) 1 bottle with R2 reagent (redox solution).

Diluition Kit *300129 – suitable for 100 tests, contains:
1) Diluent: Bottle with 100 mL of diluent (mixture of alcohols).
2) 100 test cuvettes with caps.

Code *300150/A: suitable for 100 tests, contains:
1) 10 bags with 10 pre-filled cuvette with reagent R1 (mix of alcohols and chromogenous compounds).
2) 2 bottles with R2 reagent (redox solution).

Code *300159/A: suitable for 20 tests, contains:
1) 2 bags with 10 pre-filled cuvette with reagent R1 (mix of alcohols and chromogenous compounds).
2) 1 bottle with R2 reagent (redox solution). (OxiTester)

Code *300164: suitable for 10 tests, contains:
1) 1 bags with 10 pre-filled cuvette with reagent R1 (mix of alcohols and chromogenous compounds).
2) 1 bottle with R2 reagent (redox solution). (MiniFood)

Codice *300160: suitable for 100 tests, contains:
1) 10 bags of code * 300164

Code *300190: suitable for 100 tests, contains :
1) 1 bottle with R1 (mix of alcohols and chromogenous compounds).
2) 2 bottle with reagent R2 (redox solution).
3) 100 test cuvettes with caps (PalmOilTester)

Sample Handling

Oil as is (olive oil, extracted from seeds, nuts, etc.).
Solid fats: melted using bain-marie method before starting the test (animal fats, palm oil, etc.).
Extractable fats: extract the fatty part following the instructions provided in the test method (butter, cream, margarine, semi-finished products, etc.).

Measuring range

Peroxide Value Test in Olive Oil and Vegetable Oils:

Specific curves suitable for the analyzers CDR OxiTester e CDR WineLab

Meas. range
(mEqO2/Kg)
Code Sample Volume Resolution
(mEqO2/Kg)
Repeatability
0,3 – 25 *300150/A
*300159/A
5 µL 0.01 0.3
1 – 50 *300150/A
*300159/A
2.5 µL 0.01 0.3

Peroxide Value in Essential Oils

Specific curves suitable for the analyzer CDR OxiTester.

Meas. range (mmol/L) Code Sample Volume Resolution (mmol/L) Repeatability
0 – 13 *300150/A
*300159/A
5 µL 0.01 0.02
0.5 – 25 *300150/A
*300159/A
2,5 µL 0.01 0.02

Peroxide Value Test in fat matrix

Specific curves suitable for the analyzer CDR FoodLab for fats and oils.

Meas. range
(mEqO2/Kg)
Code Sample Volume Resolution
(mEqO2/Kg)
Repeatability
0.01 – 3.4 *300150
*300159
50 µL 0.01 0.1
0.1 – 5.5 *300150
*300159
25 µL 0.01 0.1
0.5 – 11 *300150
*300159
10 µL 0.01 0.3
0.3 – 25 *300150
*300159
5 µL 0.01 0.3
1 – 50 *300150
*300159
2.5 µL 0.01 0.3
4 – 275 *300150
*300159
5 µL diluted (100 µL) 0.1 3
7 – 550 *300150
*300159
5 µL diluted (50 µL) 0.1 3

The curves 50µL and 25µL are mainly recommended for refined oils with very low Peroxide Value, requiring great precision to values lower than 1. The curve 5µL can be used for refined oils and non-refined with Peroxide Value below 25.

Peroxide Value Test in butter; margarine; cream and semi-finished fats

Specific curves suitable for the analyzer CDR FoodLab for fats and oils.

Meas. range
(mEqO2/Kg)
Code Sample Volume Resolution
(mEqO2/Kg)
Repeatability
0.1 – 5.5 *300150
*300159
25 µL 0.01 0.1

The curve 5µL is the same for the analysis of fats, but in this case it is necessary to make a small sample treatment.

Peroxide Value Test in dried fruits nuts

Specific curves suitable for the analyzer CDR FoodLab for fats and oils.

Meas. range (mEqO2/Kg) Code Sample Volume Resolution (mEqO2/Kg) Repeatability
0.1 – 5.5 *300150
*300159
25 µL 0.01 0.01
0.3 – 11 *300150
*300159
10 µL 0.01 0.3

The curves are the same for the analysis of fats, these are the most suitable rangefor the application of dried fruit nuts. The oil is extracted by pressure through the system CDR cold extraction.

Peroxide Value Test in Palm Oil

Specific curves suitable for the analyzer CDR PalmOilTester.

Meas. range (mEqO2/Kg) Codice Sample Volume Resolution (mEqO2/Kg) Repeatability
0.01 – 0.55 *300190 25 µL 0.01 0.1
0.3 – 11 *300190 10 µL 0.01 0.3
0.3 – 25 *300190 5 µL 0.01 0.3
1 – 50 *300190 5 µL 0.01 0.3

Peroxide Value Test in Flour

Specific curves suitable for the analyzer CDR FoodLab for fats and oils.

Code Meas. range (mEqO2/Kg) Sample Volume Resolution (mEqO2/Kg) Repeatability
*300150
*300159

0,05 – 25

100 µL extracted sample 0.01 0.3

To carry out the analysis of peroxide in the flour is sufficient a very easy sample preparation.

Find out the analyzer that best suits your needs

Analizzatori CDR FoodLab per l'analisi dell'acidità in oli e grassi analimali e vegetali  CDR FOODLAB CDR OXITESTER CDR PALMOILTESTER
Food Matrices Animal and vegetable fats and oils Olive Oil Palm Oil
Parameters FFA (Acidity)
Peroxide Value (PV)
p-Anisidine Value (AnV)
Soaps
Iodine Value in palm oil (IV)
Polyphenols in olive oil
Oxidative Stability Index (OSI) in olive oil
FFA (Acidity)
Peroxide Value (PV)
Polyphenols
Oxidative Stability Index (OSI)
K270
FFA (Acidity)
Peroxide Value (PV)
Iodine Value (IV)
DOBI
β carotene

Reagent developed by CDR S.r.l - ISO 9001 certified company

Peroxide Value was last modified: December 14th, 2016 by CDR s.r.l.