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This 5-Minute Process Creates DRASTIC Changes to Your Pet's Food...

Feeding Your Pet DogAccording to the Animal Nutrition Group at Wageningen University in the Netherlands, studies show drying pet food at 160°C (320°F) to 180°C (356°F) can significantly reduce its nutritional value.

In the smaller size kibble used in the study (4 mm or about .16 inch), a drying temperature of 200°C (392°F) lowered concentrations of the following amino acids:

  • Proline
  • Total lysine
  • Reactive lysine (lysine that has remained unchanged during processing)

The same size kibble dried at 120°C (248°F) had a higher ratio of reactive to total lysine than the kibble dried at the higher temperature.

The drying temp of 200°C also decreased concentrations of linolenic (omega-3) and linoleic (omega-6) fatty acids, and increased the concentration of oleic acid (omega-9 monounsaturated). The increase in oleic acid may point to lipid oxidation of the smaller kibbles during the drying process. Lipid oxidation can create off-flavors and aromas, as well as potentially toxic compounds.

Larger size kibble (8 mm or .31 inch) showed only a lowered concentration of reactive lysine, according to study results.