A blend of naturally occurring compounds, primarily different forms of vitamin E, serves as a preservative in canine diets. These compounds, including alpha, beta, gamma, and delta-tocopherols, inhibit oxidation. Their presence in pet food helps maintain the freshness and palatability of the product by preventing fats and oils from becoming rancid.
The incorporation of these compounds into pet food formulations is beneficial because it provides a natural alternative to synthetic preservatives like ethoxyquin, BHA, and BHT. Vitamin E, which these compounds provide, offers antioxidant properties contributing to overall health, though its primary role in dog food is to extend shelf life. Historically, synthetic preservatives were more common, but increasing consumer demand for natural ingredients has led to the wider adoption of this vitamin E complex.
