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  4. From farm to fridge: Reducing bacterial spores and improving temperature control to enhance dairy quality

From farm to fridge: Reducing bacterial spores and improving temperature control to enhance dairy quality

File(s)
Wasserlauf_cornell_0058O_12310.pdf (617.2 KB)
Permanent Link(s)
http://doi.org/10.7298/dfda-3252
https://hdl.handle.net/1813/117088
Collections
Cornell Theses and Dissertations
Author
Wasserlauf, Zoe
Abstract

Bacterial spores that survive pasteurization and cause defects late in shelf-life can be reduced in raw milk at the farm level using different management practices. For finished dairy products with unknown initial microbial levels, preventing temperature abuse is critical in avoiding premature outgrowth of bacteria that prefer to grow above 6°C. First, we compared the level of spores in bulk tank raw milk and whole milk powder before and after singeing the udder hair on four organic dairy herds, where mesophilic and thermophilic spores in the whole milk powder from pre- to post-intervention were significantly reduced. Secondly, we collected time-temperature data from finished dairy products from three e-commerce distribution pathways. Overall, high temperature variability was seen across all e-commerce channels, demonstrating the need for improved temperature control during e-commerce distribution. Ultimately, practical solutions to controlling factors affecting dairy quality from farm-to-fridge are needed to provide consumers with high quality dairy.

Description
73 pages
Date Issued
2024-12
Keywords
dairy
•
e-commerce
•
shelf-life
•
sporeforming bacteria
Committee Chair
Martin, Nicole
Committee Member
Worobo, Randy
Degree Discipline
Food Science and Technology
Degree Name
M.S., Food Science and Technology
Degree Level
Master of Science
Rights
Attribution 4.0 International
Rights URI
https://creativecommons.org/licenses/by/4.0/
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/16922008

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