Solutions for Quality Control of Edible Oils
Learn about the most important quality control parameters for edible oils and the best solutions for analyzing them.
Majority of the edible oils used for cooking, frying and food formulations are derived from plant sources, specifically from oilseeds such as soybean, canola, sunflower seeds, cottonseed and peanuts. Edible vegetable oils are liquid at room temperature and comprised of mainly triacylglycerides that are made up of three fatty acids attached to a glycerol molecule through ester bond.
Oil quality deteriorates by hydrolysis, oxidation and polymerization of the oil. Hydrolysis increases the amount of free fatty acids (FFA), mono- and diacylglycerols and glycerols in oils. Oxidation produces hydroperoxides and low molecular weight volatile compounds such as aldehydes, ketones, carboxylic acids, and short chain alkanes and alkenes. Dimers and polymers also are formed when oil is exposed to high temperatures during cooking and frying.
Monitoring and maintaining edible oil quality are paramount importance to ensure safety of the product for consumption. Although there is no official standard set for evaluating edible oil quality, FFA content, peroxide value (PV) and p-anisidine value (AV) are commonly used in industry to report edible oil quality.
Which Equipment to Use?
Colorimeter for color test
Rapidoxy for oxidation stability
Soxhlet Extraction with Rotary Evaporation for fat determination
Turbimeter for turbidity of oil
Titration Unit for acidity, free fatty acids, and peroxide value
Furnace up to 1200C for ash
UV-Vis spectrophotometer for p-ansidine value
General lab equipment:
- pH meter, hotplate stirrer, electronic and analytical balances, oven, water bath, circulator, shaker, conductivity meter, and other tools
Special Equipment like: gas chromatograph
For more information about equipment visit our online catalog
Prime for Scientific and Technical Supplies provides equipment, instruments and other related products and materials. We aim to be a one stop shop for all our customers laboratory needs. Since 2001, Prime has strived to provide the best services and solutions to the scientific community in the region.