PET Food Processing - September 2018 - 53

FORMULATION

balancing

ACT

The choices are challenging for preventing microbial growth
and oxidation in dry, semi-moist pet food and treats.
By Chris Crawford | petfoodprocessing@sosland.com

P

Pet food processors have many decisions to make when
creating their products. This includes how to prevent
microbial growth, control pH and whether to use traditional or natural additives to prevent oxidation and improve shelf life and product stability.
Frank Monteleone, president of FoodSafe Technologies
LLC, Deer Park, New York, says it's not always an objective to control pH in pet food, as pH changes and affects
things including texture, color and aroma. "pH is a byproduct of the addition of antimicrobials, and their addition (not the resultant pH) is what is controlled, depending upon the product and application," he says.
Other factors affecting the resultant application are
mineral content, which buffers a pH antimicrobial
rendering it less effective, water content, which can
dilute it, and ice, Monteleone says. Two product categories used for product stability are antimicrobials,
which reduce pathogen load - and to a lesser degree
mold depending on the antimicrobial - and antioxidants, which extend shelf life, he says.
Lynn Deffenbaugh, Ph.D., principal technical sales man-

ager for Kemin Nutrisurance, the pet food and rendering
technologies division of Kemin Industries, Des Moines,
Iowa, says pH control reduces microbial growth and thus,
aids in preservation from a microbial/sanitary standpoint.
However, pH control is not related to oxidation control.

Managing microbials
"The risk of microbial (yeast, mold, bacteria) growth is
lower in dry products versus semi-moist products because microbial growth is strongly dependent on water
activity," Deffenbaugh says. "Dry products generally
have a low enough moisture content to reduce the risk of
microbial growth unless there are separate packaging or
operations issues."
Most foods are generally near neutral pH or slightly below as-is, Deffenbaugh says, so pH reduction is
needed to reach a low enough pH to inhibit microbial
growth. Acid ingredients or acid salts directly lower the
pH of a product and are used to reach a target pH.
Deffenbaugh says the first step in selecting the type
of additive is identifying which one works best for that

When choosing
between traditional
or natural additives
to prevent oxidation,
processors must
validate an additive's
performance over an
extended period.
Kemin

www.petfoodprocessing.net | September 2018 | PET FOOD PROCESSING

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PET Food Processing - September 2018

Table of Contents for the Digital Edition of PET Food Processing - September 2018

Pet Food Processing - September 2018
CONTENTS
OFF THE LEASH - Learning curve
TRENDS - Can appeal
PLANT PROFILE - capitalizing ON KIBBLE
SMALL BUSINESS PROFILE - the BUTCHER shop
EDUCATION - Extrusion Cooking 101
REGULATORY - International EXPORTS
FOOD SAFETY - COLD cure
INGREDIENTS - really CLEAN
WORLD MARKETS - South Africa PET FOOD
FORMULATION - balancing ACT
EQUIPMENT - the NEXT STEP
OPERATIONS - What could go WRONG?
PACKAGING - up and COMING
BEST IN SHOW
EVENTS
INDEX
PET Food Processing - September 2018 - Pet Food Processing - September 2018
PET Food Processing - September 2018 - Pet Food Processing - September 2018
PET Food Processing - September 2018 - 2
PET Food Processing - September 2018 - 3
PET Food Processing - September 2018 - 4
PET Food Processing - September 2018 - 5
PET Food Processing - September 2018 - 6
PET Food Processing - September 2018 - CONTENTS
PET Food Processing - September 2018 - OFF THE LEASH - Learning curve
PET Food Processing - September 2018 - 9
PET Food Processing - September 2018 - 10
PET Food Processing - September 2018 - TRENDS - Can appeal
PET Food Processing - September 2018 - 12
PET Food Processing - September 2018 - 13
PET Food Processing - September 2018 - 14
PET Food Processing - September 2018 - PLANT PROFILE - capitalizing ON KIBBLE
PET Food Processing - September 2018 - 16
PET Food Processing - September 2018 - 17
PET Food Processing - September 2018 - 18
PET Food Processing - September 2018 - 19
PET Food Processing - September 2018 - 20
PET Food Processing - September 2018 - 21
PET Food Processing - September 2018 - 22
PET Food Processing - September 2018 - 23
PET Food Processing - September 2018 - 24
PET Food Processing - September 2018 - 25
PET Food Processing - September 2018 - 26
PET Food Processing - September 2018 - SMALL BUSINESS PROFILE - the BUTCHER shop
PET Food Processing - September 2018 - 28
PET Food Processing - September 2018 - EDUCATION - Extrusion Cooking 101
PET Food Processing - September 2018 - 30
PET Food Processing - September 2018 - 31
PET Food Processing - September 2018 - 32
PET Food Processing - September 2018 - REGULATORY - International EXPORTS
PET Food Processing - September 2018 - 34
PET Food Processing - September 2018 - 35
PET Food Processing - September 2018 - 36
PET Food Processing - September 2018 - FOOD SAFETY - COLD cure
PET Food Processing - September 2018 - 38
PET Food Processing - September 2018 - 39
PET Food Processing - September 2018 - 40
PET Food Processing - September 2018 - INGREDIENTS - really CLEAN
PET Food Processing - September 2018 - 42
PET Food Processing - September 2018 - 43
PET Food Processing - September 2018 - 44
PET Food Processing - September 2018 - 45
PET Food Processing - September 2018 - 46
PET Food Processing - September 2018 - WORLD MARKETS - South Africa PET FOOD
PET Food Processing - September 2018 - 48
PET Food Processing - September 2018 - 49
PET Food Processing - September 2018 - 50
PET Food Processing - September 2018 - 51
PET Food Processing - September 2018 - 52
PET Food Processing - September 2018 - FORMULATION - balancing ACT
PET Food Processing - September 2018 - 54
PET Food Processing - September 2018 - 55
PET Food Processing - September 2018 - 56
PET Food Processing - September 2018 - 57
PET Food Processing - September 2018 - 58
PET Food Processing - September 2018 - EQUIPMENT - the NEXT STEP
PET Food Processing - September 2018 - 60
PET Food Processing - September 2018 - 61
PET Food Processing - September 2018 - 62
PET Food Processing - September 2018 - OPERATIONS - What could go WRONG?
PET Food Processing - September 2018 - 64
PET Food Processing - September 2018 - 65
PET Food Processing - September 2018 - 66
PET Food Processing - September 2018 - PACKAGING - up and COMING
PET Food Processing - September 2018 - BEST IN SHOW
PET Food Processing - September 2018 - 69
PET Food Processing - September 2018 - 70
PET Food Processing - September 2018 - 71
PET Food Processing - September 2018 - EVENTS
PET Food Processing - September 2018 - 73
PET Food Processing - September 2018 - INDEX
PET Food Processing - September 2018 - 75
PET Food Processing - September 2018 - 76
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