PET Food Processing - September 2020 - 26

INGREDIENTS

Left: Wild-caught
kangaroo in this
"casserole" from
Billy+Margot
is another
sustainable and
nutritionally
viable protein
option.
Real Pet Food Company

Right: According
to Wild Earth, the
process of turning
yeast proteins
into a finished
dog food product
takes only three
days and requires
fewer resources
than traditional
proteins.
Wild Earth

26

LinkOne Ingredient Solutions, Monett, Mo. "It also contains higher levels of anti-inflammatory omega-3 fatty
acids, which have been used to treat canine arthritis and
chronic kidney disease."
While most people associate fish with cats, Leslie
Gillette, DVM, explained that smaller, younger, wildcaught fish are good options when adding fresh or processed fish to dog food. Examples include cod, flounder
and herring. These fish are generally less likely to have
high tissue mercury levels or significant parasite burdens, according to Gillette.
"In general, fish provide a natural source of omega-3
fatty acids, which aid in healthy skin and coats and
provide anti-inflammatory component to a dog's diet,"
Krestel-Rickert added.
Kemin Nutrisurance, Des Moines, Iowa, markets hydrolyzed spray-dried whitefish that is about 90% protein and
less than 0.5% fat. This composition makes it useful in lowdensity cat diets, as it allows formulators to hit nutritional
requirements, while maximizing topical fat application to
drive palatability in these challenging formulations.
"Further, more than 80% of the protein has a molecular weight under 10kDa, which is the range typically associated with being weakly immunogenic," said Alberto
Muñoz, marketing director, pet food and rendering
technologies, Kemin. "This premium protein is a costeffective option for formulators seeking functional benefits in hypoallergenic and low-density cat diets."
The dried whitefish is also rich in anserine, a bioactive peptide that has been shown to support cognition in
mice and humans, according to Muñoz. It is compatible
in dry, wet and treat applications.
There's also growing interest in insects as a source of
protein. Berkely, Calif.-based Jiminy's manufactures treats
using crickets as a sustainable source of protein. Brighton,
United Kingdom-based Yora Pet Foods produces kibble
that is 40% insect, specifically Hermetia illucens larvae, also
known as the black soldier fly. Another potential insect
protein source includes mealworms.
"Insects provide a great protein source for pets and

PET FOOD PROCESSING | September 2020 | www.petfoodprocessing.net

people alike since they reproduce in great numbers, have
high nutritional quality with very low water and land utilization," Krestel-Rickert said. "Crickets, for example, are
a complete protein and contain a useful amount, comparable to soybeans. They have dietary fiber and mostly unsaturated fat, along with essential vitamins and minerals."
Alternative plant-derived proteins are also trending.
These include tree nuts, peanuts and edible seeds. They
are also a source of fiber and healthy fats, with many
contributing desirable flavor to the pet food or treat.
Flaxseed is one example.
"Heat-treated flaxseed is high in omega-3 fatty acids,
plant-based protein and fiber. It is the highest source of
lignans in the plant-based world," said Myles Hamilton,
president, CanMar Foods Ltd., Saskatchewan, Canada.
"Flax is commonly added to pet foods and treats for
improving skin and coat health as well as improving digestibility and true metabolized energy. The omega-3 to
-6 ratio of flax is anti-inflammatory and so companion
animals with hip problems may benefit."
Milled flax seed is most common in kibble, whereas
treats can use either milled or whole seed. The inherent
oil in the seed helps facilitate extrusion.
"We decided to pursue a primarily plant-based approach due to the immediate commercial readiness,
proven demand in human food and alignment with the
unique taste and nutritional considerations of dog food,"
said Garrett Wymore, chief executive officer, Petaluma,
Oakland, Calif., which will soon be rolling out a dog
food described as "radically sustainable."
"The omnivorous physiology of dogs enables plantbased ingredients to provide a complete and balanced
nutrient profile with limited supplementation," Wymore
added. "Dogs respond positively to many plant-based
food flavors, such as peanut butter."

Yes to yeast
"Other novel protein sources are beginning to be used in pet
foods and treats," Krestel-Rickert said. "Algae, yeasts and fermented proteins are just a few of the alternatives to consider."


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PET Food Processing - September 2020

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http://digital.petfoodprocessing.net/sosland/pfp/2020_09_01
http://digital.petfoodprocessing.net/sosland/pfp/2020_06_01
http://digital.petfoodprocessing.net/sosland/pfp/2020_03_01
http://digital.petfoodprocessing.net/sosland/pfp/2019_12_01
http://digital.petfoodprocessing.net/sosland/pfp/2019_10_01
http://digital.petfoodprocessing.net/sosland/pfp/2019_09_01
http://digital.petfoodprocessing.net/sosland/pfp/2019_06_01
http://digital.petfoodprocessing.net/sosland/pfp/2019_03_01
http://digital.petfoodprocessing.net/sosland/pfp/2018_12_01
http://digital.petfoodprocessing.net/sosland/pfp/2018_09_01
http://digital.petfoodprocessing.net/sosland/pfp/2018_06_01
http://digital.petfoodprocessing.net/sosland/pfp/2018_03_01
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