At Lipid Labs, we’ve worked with companies in the pet nutrition industry, and an issue that often comes up related to formulations is lipid oxidation.
Whether you’re developing kibble, wet food, or specialty diets, managing the oxidative stability of fats and oils is essential for maintaining product integrity, shelf life, and palatability.
What Is Lipid Oxidation—and Why Does It Matter?
Lipid oxidation is a chemical process that occurs when fats and oils become exposed to oxygen. Over time, this reaction breaks down unsaturated fatty acids, producing unwanted compounds that can affect flavour and nutritional quality.
In pet foods, oxidation can lead to:
- A noticeable decline in palatability due to rancid odours or flavours
- The loss of essential fatty acids, like omega-3s
- Degradation of fat-soluble vitamins (A, D, E, K)
- Reduced shelf stability and product acceptability
These conditions may translate to lower intake, digestive disturbances, or reduced nutrient availability for pets, even in otherwise well-formulated products.
We’ve observed from projects we’ve worked on is that oxidation issues often stem from:
- High-PUFA (polyunsaturated fatty acids) formulations (which are more prone to instability)
- Suboptimal antioxidant use
- Prolonged storage under variable conditions
- Use of rendered fats or byproducts with unknown oxidative history
Samples may appear stable visually—but testing reveals early-stage or progressing lipid degradation. These oxidation products aren’t always apparent until they begin affecting flavour, nutrient retention, or shelf-life consistency.
Why Routine Lipid Testing Is Critical
Oxidative damage can begin before a product even reaches the shelf. This makes routine lipid analysis a cornerstone of quality assurance.
At Lipid Labs, we help clients assess:
- Peroxide values (PV) – to detect early oxidation
- Anisidine values (AV) – to identify secondary breakdown products
- Total oxidation (TOTOX) – for a complete stability profile
- Fatty acid profile degradation – particularly loss of key omega-3s and 6s
Monitoring these values over time allows formulators to:
- Choose better fat sources
- Adjust antioxidant systems
- Extend shelf life with confidence
If you’re formulating premium pet food or specialty blends, ensuring the oxidative integrity of your fats is more than just a technical consideration; it’s your brand’s promise.
Need support assessing lipid stability in your products? We’re here to help. Get in touch.