Saccharomyces cerevisiae as a starter culture in Mycella.
2001
Abstract The potential use of Saccharomyces cerevisiae FB7 as an additional starter culture for the production of Mycella, a Danish Gorgonzola type cheese, was investigated. Two dairy productions of Mycella, each containing batches of experimental cheeses with S. cerevisiae added and reference cheeses without yeast added were carried out. For both experimental and reference cheeses, chemical analysis (pH, a w , NaCl, water and fat content) were carried out during the ripening period, but no significant differences were found. The evolution of lactic acid bacteria was almost identical in both the experimental and reference cheeses and similar results were found for the number of yeast. S. cerevisiae FB7 was found to be predominant in the core of the experimental cheeses throughout the ripening period, while Debaryomyces hansenii dominated in the reference cheese and on the surface of the experimental cheeses. In the cheeses with S. cerevisiae FB7, an earlier sporulation and an improved growth of Penicillium roqueforti was observed compared to the reference cheeses. Furthermore, in the experimental cheese, synergistic interactions were also found in the aroma analysis, the degradation of casein and by the sensory analysis. The observed differences indicate a positive contribution to the overall quality of Mycella by S. cerevisiae FB7.
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