Oils and fats

Frying oils and fried snacks

Soaps are salts of fatty acids obtained from a reaction that occurs between free fatty acids and sodium carbonate. Thanks to their water solubility and insolubility in oil, they can be separated from fat through specific procedures. Food industries use this technique to lower fat acidity and to enhance its organoleptic characteristics. For such industries, it is important to carry out a chemical test for determining the concentration of soaps in oil and fat.

Soaps test 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. 

Test type: End Point. Testing time: [uni]. Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR FoodLab® and 3 tests for CDR FoodLab® Junior.<h3>Sample treatment</h3>Oil: use as is (extracted from dry fruits, 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.).

Method

At specific pH values soaps mixed with bromphenol, generate a specific blue colour. Its intensity, measured at 604 nm, is directly proportional to the concentration of soaps in the sample. CDR innovative method simplifies and accelerates the standard procedure, because it enables the test to be carried with micro-quantities and to be applied to fats that are difficult to extract.

Test principle

CDR method shows a very good correlation with Official Method&nbsp;NGD C8-1976.

Calibration Curve

Correlation CDR FoodLab® with the reference method NGD C8-1976. R²=0.9998

Reagent test Kits

Measuring range

CDR FoodLab® the analyzer for quality control of food, animal feeds and pet foods. Top version

CDR FoodLab®

CDR FoodLab® the analyzer for quality control of food, animal feeds and pet foods. Junior version