Slowly you twist the can opener peeling back the lid without a sound. Regardless of the silence, your furry canines bolt into the room with their tongues swinging. Quickly you pour the contents into their bowls and watch them lap it up within seconds. In the end, this ritual sounds quick and simple. On the other hand, creating this healthy and nutritious pet food results in multiple challenges.

In the past, pets scavenged left-out scraps. However, over the years pet food companies changed this by creating specific foods for companion pets. And as time chugged along, standard pet foods bloomed into a variety of formats using multiple ingredients. Today, consumers demand label friendly pet food ingredients thanks to the humanization trend.

Formulation Challenges

Creating clean label pet foods poses multiple challenges which affect texture, stability and palatability. For instance, some pet foods contain oil and water which rely on emulsification to keep them bound over time. However, the market offers very few natural emulsifiers. Without emulsification, water and oil separate negatively affecting the texture and shelf stability. Some examples of these foods include canned or wet foods, fresh foods in chubs and semi-moist treats.

Citrus Fiber, a Natural Emulsifier

Plant-based fibers are commonly used in the pet industry to improve product quality in addition to enhancing nutrition. At the same time, one functional fiber sticks out in popularity due to its high water holding and emulsification properties. Citri-Fi is an upcycled citrus fiber produced from byproduct of the citrus juicing process. Due to Citri-Fi’s highly exposed surface area and high level of pectin content, this natural pet food ingredient binds oil and water creating stability over time. For instance, in semi-soft chews or wet pet food applications, this citrus fiber forms an oil-in-water emulsion to stabilize ingredients into a homogeneous system.

A simplified model system testing varying concentrations of oil, water and fiber in addition to various oil types and challenging storage conditions demonstrates this. The results indicate that Citri-Fi emulsifies up to 60% oil to form stable oil-in-water emulsions when using 2-4% citrus fiber depending on the oil type and storage conditions. As a result, this equates to citrus fibers being able to hold up to 25 times of water and 30 times of oil in the emulsion.

Additionally, the high oil binding property of citrus fibers improves extruded products where oils add unwanted lubricity. The citrus fiber binds the free oil in the system. In addition, Citri-Fi is compatible with other pet food ingredients like flavors, colors, thickening or gelling agents or other nutritional components. Moreover, this natural citrus fiber is thermally stable in high temperatures such as in extrusion processes without losing its functionality.

Other Benefits of Citrus Fiber

Citri-Fi contributes dietary fiber in addition to reducing caloric content when replacing higher caloric pet food ingredients. This natural citrus fiber is non-GMO, allergen-free and gluten-free. Citri-Fi’s labeling options include citrus fiber, dried citrus pulp or citrus flour which all resonate well in the natural and clean label markets. Additionally, dried citrus pulp is AFFCO approved.

For more information about citrus fiber as a natural emulsifier and functional pet food ingredient, please contact us.