Psychrotrophic bacteria in pasteurized milk
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Psychrotrophic Bacteria in Pasteurized Milk—Spoilage, Testing, and Line Sampling

Bacteria in pasteurized milk is the leading cause of spoilage and reducing shelf-life. Refer to my earlier posts, How Bacterial Generation Times Impact Fluid Milk Quality and Shelf-life and Heat-Resistant Psychrotrophic Bacteria and Their Effect on the Quality of Pasteurized Milk. In those posts, I discussed the collective efforts of the dairy industry and regulatory…

Aseptic and representative sampling system from QualiTru
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Aseptic and Representative Sampling for Dairy Farms — Importance of Being Proactive (Part 2)

Aseptic and representative sampling for dairy farms is a big topic. This post is the second part of an in-depth conversation I had with Denise Sutton, our DFA Farm Supplies partner’s Sales Manager. Denise’s extensive experience in the dairy farm industry ranges from being a herd manager and running a dairy farm, being a trusted…

fluid milk shelf life
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How Bacterial Generation Times Impact Fluid Milk Quality and Shelf Life

Bacterial generation times have a significant impact on the quality of fluid milk and its shelf life regardless of the source of microbial contamination. While many factors can lower the quality of fluid milk and reduce shelf life, the most significant is microbial spoilage. “As the ability to kill, remove, or control microbial growth in…

Representative sampling for dairy farms
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Representative Sampling Solves Two Critical Problems for Dairy Farmers – Part 1

How does representative sampling solve two crucial problems for dairy farmers? Recently, I had the opportunity to have an in-depth conversation with Denise Sutton, Large Farm Sales Manager at DFA Farm Supplies. She has extensive experience in the dairy farm industry, including being a herd manager and running a dairy farm. Denise is also a…

Aseptic sampling system for breweries
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Aseptic Sampling System: Why Consistent Test Results are Important

An aseptic sampling system is critical for the quality control process in the liquid food industry. One of QualiTru’s customers in the yeast-fermented beverage business (Brewery) had a specific problem they were facing. Customer problem: Inconsistent results from quality samples Of course, our team took on the challenge of solving the vexing problem of inconsistent…

Biofilms in the Dairy Processing Industry
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Biofilms in the Dairy Processing Industry—What and Why are They Important?

Biofilms in the dairy processing industry are a big problem because they threaten the quality and safety of dairy products. The growth of bacterial biofilms is the primary reason for microbial contamination of milk and other dairy products. “In recent years, the formation and impacts of biofilms on dairy manufacturing have been studied extensively, from…

Heat-Resistant Psychrotrophic Bacteria and Milk Spoilage
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Heat-Resistant Psychrotrophic Bacteria and Their Effect on the Quality of Pasteurized Milk

Heat-Resistant Psychrotrophic Bacteria or Heat-Resistant Psychrotrophs (HRP) can affect the quality of pasteurized milk. Have you ever poured milk from a carton only to see it come out in chunks? Have you ever gulped milk only to realize too late that it tastes awful? Milk curdling and off-flavors in pasteurized fluid milk are huge turnoffs…

Bacteria in pasteurized fluid milk
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Maintaining the Quality of Pasteurized Fluid Milk

Quality control of pasteurized fluid milk can be complex and requires the understanding of microbial contamination, both in raw and processed milk. Aseptic and representative sampling plays an important role in monitoring raw milk quality and process monitoring for contamination within the dairy plant. Fluid milk (A commonly used term in the industry for milk…