Dairy Processing - January/February 2023 - 56

FOOD SAFETY
Processors should keep in mind that air quality can impact
their products, Miller-Schulze explained.
" Bacteria and fungi can represent a sizable fraction of
particulate matter depending on the source, and a dairy
processing facility could reasonably be expected to generate
particulate matter that would have both bacterial and fungal
components, " he said.
Stubbs said much of the food safety work being done at a
facility involves avoiding post-pasteurization contamination.
While companies do all they can with procedures and
plans to keep hygienic zones hygienic and make sure nothing
is coming in contact with the product in the pipe, Stubbs said
at some point in time air is going to get in there somehow.
" So even filtering the air to get it in there as the pneumatic
blower for the hygienic in the pipe is critical, " he said.
Because air is a carrier, Stubbs explained, proper air quality
is " super critical, " and that goes not only for filtering out dust
and dirt, but also monitoring temperature and humidity.
" If I have really moist air, and it's warm, and I suddenly
cool it down, I've got condensate, " he provided as an example.
" And now I have water and I have water somewhere I don't
want. And I could have growth somewhere that I don't want.
So there's just a lot of aspects of it. "
Such details must not be overlooked, O'Brien said.
" Bacteriophage movement in a cultured dairy products
plant can be greatly affected by airflow and air filtration, " she
said. " Managing air quality to minimize phage spread can help
keep your culture program more manageable. "
Miller-Schulze estimated that the concern for the
introduction of " wild-type " bacteria or fungus would be
elevated at facilities dealing with cultured dairy products.
Within the industry, Stubbs said he has found that
companies, particularly " the big players, " are " very thoughtful "
about all of these factors. He said companies want to make
sure the air is impeccable when it is in a bagging room.
It's important to properly manage air quality in facilities,
Travis said, because dairy processors make ready-to-eat foods
that are handled in highly specified details along the path from
raw to final product.
" The air quality is a very critical ingredient, because at the
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Dairy Processing - January/February 2023

Table of Contents for the Digital Edition of Dairy Processing - January/February 2023

Dairy Processing - January/February 2023 - Intro
Dairy Processing - January/February 2023 - 1
Dairy Processing - January/February 2023 - 2
Dairy Processing - January/February 2023 - 3
Dairy Processing - January/February 2023 - 4
Dairy Processing - January/February 2023 - 5
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