Biological |
Contamination with vegetative bacteria. |
– Adding fresh fruits with pH of ≤4.7, properly roasted nuts, and/or additives with water activity ≤0.85 to the dairy product after pasteurization does not affect the quality of the yogurt produced (Poltronieri & Rossi, 2017). |
Chemical |
Any chemical contaminants. |
– Supplier should provide letter of guarantee for any additive added to the dairy product after pasteurization. |
Contamination with allergens from materials mixed with product. |
– Pipelines, valves, and any part of the pasteurizer used for any other food, that might contain allergens, must be cleaned properly to avoid unlabeled cross contamination. |
|
|
– All inlets to cultured product tanks must be tightly controlled and closed. |
Physical |
Foreign substances |
– Equipment must be maintained in good status to eliminate any source of hazard (Food & Drug Administration, 2018). |