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Oxidation stability

Oxidation stability

Every food, feed and other product containing lipids (creams, lip balms, body lotions, wax etc...) undergoes oxidation of the contained fat portion, which causes unpleasant flavor, bad smell and the loss of its natural sensorial qualities. The Oxitest Method is an internationally recognized analytical technique for the determination of the oxidation stability of food, fats and oils.

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Predictive Study of Fat Oxidation Method

Many factors have influence on lipid oxidation (and in the shelf life of the sample) such as ambient temperature, exposure to heat, the composition of Fatty Acids and its degree of saturation, the concentration of oxygen etc. Especially for food industries, the prediction of stability to oxidation of raw material and finished products is a crucial information with many operational and economic implications.

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Velp Fat oxydation method predictive oxidation stability

Accelerated Oxidation Testing with OXITEST Reactor

The stability tests performed with the OXITEST reactor accelerate the oxidation process that in normal conditions can last weeks or months and provide fast, accurate and reliable results. 
The OXITEST Method is an internationally recognized analytical technique (AOCS Standard Procedure Cd 12c-16) for the determination of the oxidation stability of food, fats and oils.

Impact of Lipid Oxidation on Food, Feed, and Cosmetic Products

Every food, feed and other product containing lipids (creams, lip balms, body lotions, wax etc.) undergoes oxidation of the contained fat portion, which causes unpleasant flavor, bad smell and the loss of its natural sensorial qualities. 

Reliable Results for Various Industries with OXITEST

The stability tests performed with the OXITEST reactor accelerate the oxidation process that in normal conditions can last weeks or months and provide fast, accurate and reliable results for Food & Feed, Cosmetic, Pharma and Petrochemical industries.

How OXITEST Works: Accelerating Oxidation with Temperature and Oxygen Pressure

OXITEST speeds up the oxidation process because of the two accelerating factors, temperature and oxygen pressure. The instrument measures the absolute pressure change inside the two chambers, monitoring the oxygen uptake by reactive components in the sample and automatically generates an IP value. 

Understanding the Induction Period (IP) in Oxidation Stability

VELP Oxidation stability Induction Period (IP) Graphical Results

Induction Period Results

Induction Period (IP)

14h 46 min (Graphical method)

Test duration

21h 00 min

Curve 1

Y = -0,003X +6,18

Curve 2

Y = -1,575X +29,43

The Induction Period (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. The operator can create test reports for a single test or compare different analyses for a better interpretation of the data.
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Applications of OXITEST in Different Sample Types

OXITEST works directly on the whole sample without the need for preliminary fat separation, ensuring representative results on solid, semi-solid and liquid samples, raw and finished products. 

VELP Applications Food, Feed and Beverage Industry - Whealth

Food, Feed and Beverage Industry

VELP Applications Cosmetic Industry

Cosmetic Industry

Photo by Toa Heftiba on Unsplash

VELP Applications Chemical Industry

Chemical Industry

OXITEST Oxidation Stability Reactor: Innovative Testing Solution

VELP OXITEST Oxidation Stability Reactor

OXITEST Oxidation Stability Reactor

Innovative accelerated oxidation test for the determination of the oxidation stability of fats on the whole sample according to AOCS Cd-12c-16.

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OXITEST Oxidation Stability Reactor
VELP

OXITEST Oxidation Stability Reactor

Reference : VEL-F30900248

Fats and oils oxidation stability tests for R&D and QC Labs

The oxidation stability tests performed with the OXITEST reactor accelerate the lipid's oxidation process that in normal conditions can last weeks or months and provide fast, accurate and reliable results for Food & Feed, Cosmetic, Pharma and Petrochemical industries. 

The OXITEST provides added value information for Quality Control and Research & Development Labs for:

  • Quality control of raw materials and ingredients
  • Transportation and effects on goods
  • Storage period studies
  • Product Development and behavior
  • Formula Optimization
  • Ingredient and alternative ingredients testing
  • Process optimization
  • Packaging study and alternative packaging comparison

The results of the OXITEST are expressed through the IP Induction Period

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.

Representative results testing the whole sample

The OXITEST reactor subjects the sample to a high oxidative stress environment in order to evaluate, in a short period of time, the resistance to fat oxidation:

  • Established over-pressure of pure oxygen (6 bar, degree 5.0)
  • High constant temperature, 90 °C

With the OXITEST Method, the stability test is performed directly on the sample as it is solid, liquid or doughy

The method's key advantage is that the OXITEST ensures representative results without extensive sample preparation

Other components of the sample matrix such as chemical oxidants or transition metal can promote oxidation and the use of extracted matter may not be a suitable predictor of stability.


OXISoft™ software powerful and intuitive

The OXITEST is entirely controlled via PC through the intuitive OXISoftTM software which is able to control up to 4 OXITEST simultaneously and independently. The OXISoft™ is quick and easy-to-use, at a glance you always have the program parameters, work conditions and results. 

The software comes with multi-lingual support and a pre-installed library of methods related to a wide range of sample types, you can use these, modify them and create your own methods!

Data management, reportiing and archive with the following test types:

  • Repeatability test
  • Freshness test
  • Formulas comparison
  • Packaging comparison
  • IP during ageing
  • Estimated shelf life
OXITEST Oxidation Stability Reactor
VELP
OXITEST Oxidation Stability Reactor
Reference : VEL-F30900248

Fats and oils oxidation stability tests for R&D and QC Labs

The oxidation stability tests performed with the OXITEST reactor accelerate the lipid's oxidation process that in normal conditions can last weeks or months and provide fast, accurate and reliable results for Food & Feed, Cosmetic, Pharma and Petrochemical industries. 

The OXITEST provides added value information for Quality Control and Research & Development Labs for:

  • Quality control of raw materials and ingredients
  • Transportation and effects on goods
  • Storage period studies
  • Product Development and behavior
  • Formula Optimization
  • Ingredient and alternative ingredients testing
  • Process optimization
  • Packaging study and alternative packaging comparison

The results of the OXITEST are expressed through the IP Induction Period

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.

Representative results testing the whole sample

The OXITEST reactor subjects the sample to a high oxidative stress environment in order to evaluate, in a short period of time, the resistance to fat oxidation:

  • Established over-pressure of pure oxygen (6 bar, degree 5.0)
  • High constant temperature, 90 °C

With the OXITEST Method, the stability test is performed directly on the sample as it is solid, liquid or doughy

The method's key advantage is that the OXITEST ensures representative results without extensive sample preparation

Other components of the sample matrix such as chemical oxidants or transition metal can promote oxidation and the use of extracted matter may not be a suitable predictor of stability.


OXISoft™ software powerful and intuitive

The OXITEST is entirely controlled via PC through the intuitive OXISoftTM software which is able to control up to 4 OXITEST simultaneously and independently. The OXISoft™ is quick and easy-to-use, at a glance you always have the program parameters, work conditions and results. 

The software comes with multi-lingual support and a pre-installed library of methods related to a wide range of sample types, you can use these, modify them and create your own methods!

Data management, reportiing and archive with the following test types:

  • Repeatability test
  • Freshness test
  • Formulas comparison
  • Packaging comparison
  • IP during ageing
  • Estimated shelf life

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