A blend of naturally occurring compounds, these substances are a form of vitamin E. They act as antioxidants, preventing the spoilage of fats in canine diets. Examples include alpha-, beta-, gamma-, and delta-tocopherols, each providing a unique set of protective properties. This mixture offers broader antioxidant coverage compared to a single form of the vitamin.
The inclusion of these compounds is vital for maintaining the freshness and nutritional integrity of pet food. Their antioxidant capabilities protect susceptible fats from oxidation, preventing rancidity and preserving essential fatty acids. Historically, synthetic preservatives were common, but a shift towards natural alternatives has led to their widespread adoption, reflecting a growing demand for healthier and safer options for animal consumption.