Cream,
a fat-rich dairy product, is inherently susceptible to microbial contamination
and subsequent spoilage due to its nutrient-rich composition and water
activity. This abstract summarizes the diverse microbial ecology of
cream, tracing the primary sources of contamination from raw milk, processing
environments, and handling practices. Key microbial groups, including
psychrotrophic bacteria (e.g., Pseudomonas), mesophilic bacteria
(including lactic acid bacteria), coliforms, spore-formers (Bacillus, Clostridium),
and potential pathogens (Staphylococcus aureus, Salmonella, Listeria
monocytogenes), are highlighted alongside their roles in various spoilage
mechanisms such as souring, rancidity, bitterness, and textural defects. The
critical role of pasteurization in ensuring safety and extending shelf life is
discussed, contrasting different heat treatment methods (LTLT, HTST, UP, UHT).
Finally, essential strategies for microbiological control throughout the
production chain, encompassing raw milk quality, hygienic processing, effective
pasteurization, prevention of post-processing contamination, and proper
storage, are emphasized as crucial for delivering safe and high-quality cream
to consumers. Understanding and managing the microbial landscape of cream is
paramount for the dairy industry to mitigate spoilage and safeguard public
health.
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