PotaFibre is a co-product released during the production of starch from potatoes. The potatoes are washed and then ground into a potato mash. The mash is seperated into starch, liquid protein and fibres. The fibres are pressed, air dried and pelleted. PotaFibre is a good source of soluble and insoluble fibre. It is a popular alternative for grains and rice.
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PotaFibre dietary fibre source for dog food
Research has shown that PotaFibre is a good dietary fibre source in dog food. Extensive research has been done to the composition of Potato Fibre. Please see summary.
PotaFiber (PF), a coproduct of potato starch manufacture, was evaluated as a potential novel fiber source in dog food. The PF was evaluated for in vitro digestion and fermentation characteristics and in vivo responses.
PF was autoclaved to simulate processing conditions at a petfood factory. PF was first subjected to hydrolytic-enzymatic digestion to determine organic matter disappearance and then fermented using dog fecal inoculum. Fermentation characteristics were measured at 0,3,6,9 and 12h.
For the in-vivo experiment, 10 female mixed-breed dogs were provided 5 diets with graded concentrations of PF (0%, 1,5%, 3%, 4,5% or 6%).
During the in-vitro hydrolytic-enzymatic digestion phase, 28% of cooked PF was digested.
In-vitro fermentation showed that PF was fermentable through time. Acetate, propionate, butyrate and total SCFA concentrations increased through 9h of fermentation, then exhibited a decrease in acetate and total SCFA concentrations at the 12h time point.
These data indicate that PF is a moderately fermentable fiber and is likely fermented throughout the hindgut.
The in-vivo experiment showed no differences in apparent total tract DM, OM, CP, acid-hydrolyzed fat or energy digestibility of diets containing graded concentrations of PF. Overall, linear increases were observed for all individual and total SCFA, with a concomitant linear decrease in fecal pH with increasing PF contents. Fecal scores were nearly ideal, averaging 2,7 across treatment, with no differences noted among treatments.
These findings indicated that inclusion of PF elicited favorable fermentation characteristics without negatively affecting nutrient digestibility or stool characteristics, indicating that PF could be a functional dietary fiber source in dog foods.
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