How to know the oxidation state to predict the Shelf life of the fried snacks
Snacks food can undergo degradation processes, first of all, the lipid oxidation which causes rancidity and off- flavours. There are several methods to test the shelf life of snacks and bakery foods, but CDR FoodLab® is the only one, not only to be a green method, but also, it is able to give an actual measurement of oxidative stability of finished products, in a simple and fast way. Read Comparison between different methods
Testing p-Anisidine to provides a indication of deep-frying oil resistance – University of Hamburg
CDR Foodlab® was used for a test to determine the p-Anisidine Value in two types of sunflower oils for a comparative study on the oxidative stability of deep-frying oils carried out by the University of Hamburg: “Analyses of the oxidative stability of deep-frying oils”, curated by Katharina D. Placke, Jan Fritsche and Kim K. Kleeberg. Researchers relied on our instrument to determine the quantity of p-Anisidine, which provides a sound indication of deep-frying oil resistance. The study highlighted the reduced testing time, the intuitive method of the system, the fact that titration is not required and, therefore, that toxic reagents are not employed. [More…]
Study on the stability of palm olein blended with macadamia oil for deep-fat frying application
The study “Improvement in nutritional quality and thermal stability of palm olein blended with macadamia oil for deep-fat frying application”, supported by Texas A&M University and published on the Journal of Food Science Technology, aimed to investigate the suitability of refined bleached deodorized palm olein oil (RBD POO) and Macadamia integrifolia oil (MO) blend as deep-fat frying substitute. CDR FoodLab® for analysis of Free Fatty Acids (FFA), Peroxide Value (PV), and Anisidine Value (AV) has been used for the study. The mentioned parameters has considered as indicators of the state of oil deterioration.
Testing the oxidation of oil over time: Peroxides, p-Anisidine Value, TOTOX
CDR FoodLab® is the ideal solution to monitor the quality or the progressive degradation of deep-frying oil, providing accurate data on the oxidation of oil at a given moment. Moreover, the system allows to perform an utmost accurate analysis of an oil thanks to the p-Anisidine Value test, which is the parameter indicating the secondary stage of oxidation. The TOTOX value is calculated by the formula: p-Anisidine + 2 Peroxides. This allows to determine the whole oxidation story of an oil and, therefore, its overall degradation state.
The figure shows the trend of the three parameters over time and the relation between their respective values. The TOTOX value is the parameter calculated combining the peroxide value and the p-anisidine value and reveals the whole oxidation state of an oil. Source: “Oxidation of food grade oils”.
The international reference laboratory Campden Bri has trialled the CDR FoodLab® to establish whether it could meet the requirements for analysing a number of important food quality parameters. assessment of the ability of the CDR FoodLab® to analyse for Anisidine Value, Peroxide Value and Free Fatty Acid content showed that the instrument gave comparable results to the reference methods with very high correlation coefficients suggesting good accuracy of results. [More…]
The reliability and availability of CDR FoodLab® system for determining acid value (AV) and peroxide value (POV) were assessed during the hydrolytic rancidification and lipid oxidation of edible oils.
The CDR FoodLab® system based on spectrophotometry was compared to the official methods (ISO 660 and 3960 protocols) based on manual titration employing the standard mixture for the simulated oxidation models and edible oils during the thermally induced oxidation at 180°C.
Considering ISO protocols with a probability of human error in manual titration, the rapidness and simplicity of the reagent kit based on spectrophotometry make it a very good alternative to monitor the lipid oxidation of edible oils and lipid-containing foods. [More…]