Solulys Advantages Compared to Commonly Utilized Industrial Yeast Extracts

Solulys is not a “by-product”, rather a corn steep type product developed specifically by Roquette.  The tightly controlled manufacturing process is aimed at producing a characteristic product profile that differentiates Solulys from typical CSL.  Solulys demonstrates lot to lot consistency in composition¹ including DS, protein, free amino acids, vitamin and minerals; predictable performance², and industrial pricing/availability. 

In this study, we will demonstrate the performance of Solulys in both cell growth and enzyme productivity, compared to commonly utilized industrial yeast extracts.  A performance comparison of this rich source of nitrogen, amino acids and vitamins was completed by utilizing an alpha-amylase fermentation model with Bacillus subtilis (ATCC #21770), a yeast propagation study with S. Cerevisiae, and assorted other microorganisms. 

Results: (1) Solulys demonstrated improved buffering capacity, and favorably with yeast extract performance; (2) Specific yeast extracts demonstrated limitations in supplying vitamin/mineral content required in cell propagation; (3) Examination of cell growth with a range of common industrial microorganisms demonstrated improved cell growth when using Solulys vs. yeast extract; (4) Cell viability was dramatically improved in media containing Solulys.