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In traditional yogurt manufacturing, the yogurt is not agitated during fermentation. However, stirring could be beneficial, particularly for improving heat and mass transport across the fermentation tank. In this contribution, we studied the effect of low-speed agitation during fermentation on process time, acidity profile, and microbial dynamics during yogurt fermentation in 2 laboratory-scale fermenters...
The viability was investigated of five strains of Lactobacillus acidophilus and one strain of Lactobacillus casei that were added as adjuncts to yogurt and cultured buttermilk during 28 d of refrigerated storage at 5 to 7°C. A modification of LBS (Lactobacillus selection) agar was used for the enumeration of L. acidophilus and L. casei. The medium allowed the colony formation of the adjunct bacteria...
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