ATMOSPHERIC (TRIPLET) oxygen is a low energy biradical (i.e., contains two unpaired electrons). However, during metabolism of oxygen as well nitrogen, alterations can occur to produce highly reactive oxygen and nitrogen species that will react with and cause damage to biomolecules. In foods, this can cause oxidation of lipids, pigments, vitamins, and proteins, leading to […]
A. Phenolic Antioxidants Phenolics are compounds that have a hydroxyl group associated with an aromatic ring structure. There are numerous variations of both natural and synthetic phenolics (see Fig. 1 for examples). Natural phenolics are found predominately in the plant kingdom. Vitamin E or a-tocopherol is a plant phenolic required in the diet of humans […]