Oils and fats

Frying oils and fried snacks

Animal feeds and silages

Pet Food

The most important application of the iodine number test is to determine the amount of unsaturation contained in the fatty acids that make up oils. This unsaturation is in the form of double bonds which react with iodine compounds. The higher the iodine value, the greater the unsaturation present in the fatty acid.The iodine number is used as a quality or process control parameter but it can also be used as a characterization parameter because each type of oil or fat has an iodine value included in a range that identifies the product itself.

Determination of Iodine Value in Oils and Fats

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. 

Method

Test type: Kinetic analysis. Testing time: [uni]. Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR FoodLab®.<h3>Sample treatment</h3>Oil: take the sample in the unaltered state (olive oil, seed oil, hazelnut oil, etc.). Solid fat: melt in a water bath before sample collection (animal fats, palm oil, etc.). Fish oil: take the sample in the unaltered state Frying oil: take the sample in the unaltered state Snacks and fried products: with the CDR system, the oil to be analysed can be extracted with a simple mechanical treatment. Dried fruit in shell: with the CDR system, the oil to be analysed can be extracted with a simple mechanical treatment. Bakery products: it is necessary to grind the sample and add the EXTRAFLUID water-based fat extraction aid in appropriate proportions; after a short centrifugation the fat is obtained as supernatant. Spreads: simply add the extraction aid; after a short centrifugation, the fat is obtained as supernatant.

Double bonds react with iodine in alcoholic solution determining a variation in the reagent’s absorbance. This amount measured at 446 nm is indirectly related with concentration of double bond in the sample, expressed as IV (Iodine Value).

Test Principle

CDR method to test iodine value in fats and oils shows a good correlation with Official Method UNI EN ISO 3961:2018 based on the offocial method AOCS Cd 1c-85.

Calibration Curve

CDR method to test iodine value in fats and oils shows a good correlation with Official Method UNI EN ISO 3961:2018 based on the offocial method AOCS Cd 1c-85.

Determination of Iodine Value in Oils and Fats

Method

Test Principle

Calibration Curve

Reagent test Kits

Measuring range

The analyzer for oils and fats quality control

CDR FoodLab®