For a wide range of companies, the prediction of oxidation stability of raw material and finished products is a matter of ever-growing importance with many operational and economic implications.
Studying the behavior of fats oxidation is critical for quality control and R&D operators and provides important information for comparing formulas and new ingredients, studying the transportation effects on goods, assessing the storage period, developing new products, and more.
VELP provides an innovative accelerated Oxidation Stability Reactor that enables companies to achieve accurate and reliable results, according to AOCS Cd-12c-16.
The VELP Oxitest performs analysis without requiring a preliminary fat extraction and this guarantees representative results. In fact, the components of a complex matrix not extracted with an organic solvent, are often important in determining the oxidative stability of the fat component. Then they must be considered by letting them act in their matrix.
By submitting the sample to an established over-pressure of pure oxygen (6 bar, degree 5.0) and high constant temperature (90 °C), the instrument measures the absolute pressure change inside two independent chambers, monitoring the oxygen uptake by reactive components present in samples, and gives as result the Induction Period (IP).
The IP is the time required to reach the starting point of oxidation, corresponding to either a level of detectable rancidity or a sudden change in the rate of oxidation. The longer the Induction Period, the higher the stability against oxidation over time.