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Why are most physicochemical parameters not useful in predicting the quality of sheep milk?
Authors:Alline Artigiani Lima Tribst  Luiza Toledo Piza Falcade  Bruno Ricardo de Castro Leite Júnior  Miguel Meirelles de Oliveira
Abstract:The impact of microbial growth on the physicochemical parameters of sheep milk was evaluated. The total bacterial counts (TBC) showed a lag phase of 4 h and µ‐max of 0.4 log/h. After 8.4 h, the TBC reached the limit established by European Community, pH had a reduction of 0.04, acidity had an increase in 0.04%, and no changes were observed in the ethanol stability. The milk became thermally unstable after 17 h (109 cfu/mL), when the pH was 5.71, acidity was 0.36%, and ethanol stability was 21.3%. These results highlighted the extreme stability of sheep milk protein and that acidity may be the best physicochemical parameters to predict the quality of sheep milk.
Keywords:Acidification  Heat stability  Physicochemical properties  Quality assurance  Raw milk
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