Natural antioxidant systems are naturally occurring substances blended in powders or dissolved in a suitable liquid carrier.
Our natural antioxidant systems are sold under the brand names Phytrox, Phytrox Rosemary and Tocomix. They contain combinations of three different natural antioxidants:
Tocopherols
Commonly found in virtually all vegetable oils where they serve as a first line of defense against autoxidation. Natural tocopherols actually consist of a mixture of four different homologues: alpha-, beta-, gamma- and delta-tocopherol. Each has different physiological and antioxidant properties.
Alpha-tocopherol has the highest vitamin E activity. Gamma- and delta-tocopherol have higher antioxidant activities, are more stable and perform better at high temperatures (up tp 200°C with hardly any degradation). So, for oils and fats which will be exposed to high temperatures, high gamma-and delta-tocopherol content is most effective. For an optimal vitamin E effect, high alpha-tocopherol contact is preferable. For food manufacturing, it is recommended to keep total alpha-tocopherol (natural and added) to a level between 50 and 500 ppm, depending on the product.
Ascorbyl palmitate
Ascorbyl palmitate is made out of two natural compounds, ascorbic acid and palmitic acid. Ascorbic acid, or vitamin C, is found naturally in many fruits and acts as an effective oxygen scavenger, blocking oxygen and making lipid oxidation impossible. Highly soluble in water, ascorbic acid alone is insoluble in oils. Ascorbyl palmitate was developed to be soluble in oils up to 200 ppm. This alone is not sufficient, but it can be highly effective at stabilizing vegetable oils because of its synergy with naturally occurring tocopherols.
Rosemary extracts
Phenolic compounds (mainly diterpenes) are responsible for the antioxidant properties of rosemary extract. The diterpenes carnosic acid and carnosol are fat soluble. Rosmarinic acid is water soluble. As a result, rosemary extracts suitable for many different applications: fats and oils sensitive to rancidity, spices, meat, fish, prepared foods, sauces and aromatic and cosmetic compositions. Rosemary extracts come in powder or liquid form, which differ in their content of active compounds. Deodorized extracts are also available for applications requiring neutral taste and odor.
 
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