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International Journal of Dairy Science
Year: 2017  |  Volume: 12  |  Issue: 5  |  Page No.: 318 - 324

Improving the Quality of Ultrafiltered Ras Cheese using Mature Cheddar Cheese Slurry

Shaimaa Mohamed Hamdy, Hany Shaaban Mahmoud and Khaled Abdel-Hakam Abbas    

Abstract: Background and Objective: Ultrafiltered cheese was characterized by slow protein degradation, flavor development and hard texture. So, this study was aimed to improve the overall quality of UF-Ras cheese with adding mature Cheddar cheese slurry to ultrafiltered cow's milk (at a rate of 0, 1, 2 and 3% kg–1 retentates). Materials and Methods: Cheese quality was monitored during the 90 days of ripening by evaluating physicochemical, microbiological, microstructure and sensory attributes of control and experimental UF-Ras cheeses. One-way (ANOVA) and Principal Component Analysis (PCA) were used. Results: The ripening indices of 60 days UF-Ras cheese with cheese slurries were almost two-fold higher than of 30 days control cheese. PCA showed that the cheese samples were differentiated on the basis of ripening indices, for 90 days slurry-containing cheeses, for 60 days slurry-containing cheeses gathered with 90 days control cheese and for 30 days slurry-containing cheeses gathered with 30-60 days control cheeses. SEM micrographs of slurry-containing cheeses (60 days) and control cheese (90 days) were closely similar and no differences were seen between them. UF-Ras cheese made using mature Cheddar slurry received significantly (p<0.05) higher scores for flavor intensity, texture and overall quality compared to control cheese on the 1st month of ripening. Conclusion: These results suggest that the utilization of 2-3% of mature Cheddar cheese slurry to accelerate ripening and improving the overall quality of UF-Ras cheese.

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