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Research Paper | March 5, 2022

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Microbial content of pasteurized cattle milk at different packaging materials and storage duration

Babylyn P. Canceran

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J. Bio. Env. Sci.13(3), 117-121, September 2018

DOI: http://dx.doi.org/10.12692/ijb/20.2.1-20

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Milk is an important source of nutrients to human and animals, but due to its high water activity and nutritional value it serves as an excellent medium for growth of many kind of microorganisms under suitable conditions. This study determined the presence and levels of microbial content of pasteurized cattle milk using three packaging materials: Polyethylene terephthalate (PET), tetra pack and glass and stored at different durations: six (6), twelve (12) and twenty (24) hours. Samples were subjected to microbiological analysis for Aerobic Plate Count at the Department of Science and Technology (DOST), Tuguegarao City. Results showed that PET packaging material produced the least mean microbial load and recorded the most delayed production and growth of microbes at different storage durations. Using ANOVA, analysis further showed that the combined effect of the packaging material and storage duration on the mean microbial load of dairy milk is significant (P>0.01). Results imply that the use of PET packaging material allows dairy milk to be stored for a longer period with the least growth of microorganisms compared to the use of glass and tetra pack packaging materials.


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Microbial content of pasteurized cattle milk at different packaging materials and storage duration

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