Evaluation of frying oil for snack industry

Easy, fast and reliable chemical tests to monitor the degradation of frying oil and to determine the shelf life of fried products and snacks with CDR FoodLab

To obtain a high quality snack product, it is essential to continuously monitor frying oil. CDR FoodLab® enables to control the quality of frying oil directly during the manufacturing stage with a fast, simple and reliable method.

Evaluation of frying oil: To obtain a high quality snack product, it is essential to continuously monitor frying oilIn industrial frying quality staff may monitor several chemical parameters during the frying operation in an effort to maintain optimum product quality.

In fact monitoring frying oil is essential to avoid unpleasant effects on finished snacks products.

Manufacturing plants usually have a filtering system that is designed to extend the life of the oil, while drastically reducing costs. However, it is still important to identify the parameters that indicate a progressive degradation of oil, as a result of the fact that physical and chemical properties of fried oil and fat tend to change significantly after extensive use.

Chemical tests to monitor the quality of frying oil

The most common chemical test conducted by fryer operators is for Free Fatty Acids (FFA), because frying process causes the increase of the FFA.

tests to to check the quality and the life of a frying oil

In addition to this, it is important to consider that the frying process also produces peroxides that immediately transform into polar compounds due to the high temperatures.

Thus, Peroxide Value (PV) cannot be regarded the sole indicator. The frying process also produces several volatile and non-volatile compounds including aldehydes and ketones.

A study carried out on soybean oil used to fry chips showed that the p-Anisidine Value (AnV) was significantly influenced by the concentration of aldehydes and polymers, and by other sensorial evaluations.

Given these considerations, the appropriate indicators to monitor the quality of oil during the frying process appear to be Free Fatty Acids (FFA), p-anisidine value (AnV) and Peroxide Value (PV), while the quality of incoming oil can be assessed using Free Fatty Acids and Peroxide Value as indicators.

The critical process control points

The limit values for each parameter that is indicative of physical and chemical alterations are influenced by several variables that include the type of oil, the type of food being fried and the frying method.

It is therefore necessary to define experimentally the threshold values that represent the critical process control points.

These values can provide an effective indication of whether the frying process complies with the requirements necessary to ensure a product with a high final quality.

CDR FoodLab® for Snack industry

CDR FoodLab analysis system for snack industryCDR FoodLab® is the ideal system to monitor the degradation of frying oil, cooking oil, waste oil.

It can determine:

  • Free Fatty Acids (FFA) in 1 minute
  • Peroxide Value in 4 minutes
  • p-Anisidine Value in 2 minutes

CDR FoodLab® system is intensively using for the quality control in frying industry since many years.

It is used from the quality control of the oil to the entire frying process in order to manage it at best avoiding dangerous of flavours.

With the possibility of Shelf life determination CDR FoodLab® becomes an important system that allows the frying industries to realise a complete quality control from the oil to the packaged final product.

Evaluation of frying oil: To obtain a high quality snack product, it is essential to continuously monitor frying oilTo know the topic in-depth download the full document: “EVALUATION OF FRYING OIL


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With the CDR system, you can perform your tests in total autonomy

Neither skilled staff nor a dedicated external laboratory is needed to use our systems. CDR FoodLab® optimizes traditional testing methods, making them faster and easier, while guaranteeing accuracy standards in line with the reference methods.

Analytical kit

CDR FoodLab® Analysis Systems use disposable pre-vialed reagents specifically developed by the research laboratories of CDR. The use of pre-vialed reagents and the analytical procedures allow:

  • a sample preparation that is quick and easy, when needed at all;
  • making analytical procedures extremely fast and easy;
  • removing all needs for complex calibration procedures.

Reagents come in aluminum packages containing 10 test tubes each to perform 10 tests (or packages for 100 tests containing 10 single packages of 10 test tubes each).

Just a few steps and results are yielded right away

Just a few steps will suffice to carry out your analysis in a rapid way in total autonomy. The system is composed of both the analyzer based on photometric technology and a kit of low toxicity, pre-vialed reagents, developed by CDR.

CDR FoodLab® is cost-effective because it does not require the use of expensive equipment and does not entail maintenance, assistance or calibration costs.
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