PET Food Processing - September 2022 - 40

EQUIPMENT
" Ultimately what you're looking for is a certain water
activity that makes the product shelf-stable and safe, "
said Steve King, vice president of global sales, ALKARRapidPak,
Inc., a subsidiary of Middleby based in Lodi,
Wis. " That magic number for water activity is 0.85; most
people shoot for 0.8 for jerky. For kibble and cookies,
you're looking at anywhere between 0.4 and 0.55. "
According to King, achieving a narrow range for variation
of water activity - whether in a batch process or a
continuous process - can help companies prevent complications
down the road for shelf life and food safety,
which may ultimately lead to a product recall.
" You have to figure out how much water you're evaporating
from the process, which requires a certain amount
of energy, " King said. " No matter how you slice it, you
have to look at how that water and moisture is removed
and, subsequently, how it is put back into the air. Any
evaporated water must get out of the system, and that
has to be consistent. "
In an oven that uses microwave technology, such as
" It's very important to
understand the recipes and
how everything ties together. "
Steve King, ALKAR-RapidPak, Inc.
ALKAR-RapidPak's Turbochef system, it's important to
consider how evaporated water coming off a product will
be removed from the oven. If it remains in the oven, King
explained, microwave energy will continue seeking out
moisture and the cycle is prolonged. Aside from understanding
the precise amount of energy needed to remove
water to a certain point, an exhaust system is needed to
remove evaporated moisture from the air, he added.
For example, an exhaust system helps ALKARRapidPak's
customers vent evaporated moisture out of
the machine. This, along with good airflow, ensures the
evaporated water doesn't continue to be a factor.
" The ideal state is where the surface of a product is
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PET Food Processing - September 2022

Table of Contents for the Digital Edition of PET Food Processing - September 2022

PET Food Processing - September 2022 - Intro
PET Food Processing - September 2022 - FALSE COVERa
PET Food Processing - September 2022 - FALSE COVERb
PET Food Processing - September 2022 - 1
PET Food Processing - September 2022 - 2
PET Food Processing - September 2022 - 3
PET Food Processing - September 2022 - 4
PET Food Processing - September 2022 - 5
PET Food Processing - September 2022 - 6
PET Food Processing - September 2022 - 7
PET Food Processing - September 2022 - 8
PET Food Processing - September 2022 - 9
PET Food Processing - September 2022 - 10
PET Food Processing - September 2022 - 11
PET Food Processing - September 2022 - 12
PET Food Processing - September 2022 - 13
PET Food Processing - September 2022 - 14
PET Food Processing - September 2022 - 15
PET Food Processing - September 2022 - 16
PET Food Processing - September 2022 - 17
PET Food Processing - September 2022 - 18
PET Food Processing - September 2022 - 19
PET Food Processing - September 2022 - 20
PET Food Processing - September 2022 - 21
PET Food Processing - September 2022 - 22
PET Food Processing - September 2022 - 23
PET Food Processing - September 2022 - 24
PET Food Processing - September 2022 - 25
PET Food Processing - September 2022 - 26
PET Food Processing - September 2022 - 27
PET Food Processing - September 2022 - 28
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PET Food Processing - September 2022 - 31
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PET Food Processing - September 2022 - 33
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PET Food Processing - September 2022 - 35
PET Food Processing - September 2022 - 36
PET Food Processing - September 2022 - 37
PET Food Processing - September 2022 - 38
PET Food Processing - September 2022 - 39
PET Food Processing - September 2022 - 40
PET Food Processing - September 2022 - 41
PET Food Processing - September 2022 - 42
PET Food Processing - September 2022 - 43
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PET Food Processing - September 2022 - 60
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PET Food Processing - September 2022 - 74
PET Food Processing - September 2022 - 75
PET Food Processing - September 2022 - 76
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