P23: Solulys: An Ideal Choice for the Fermentation Industry-2: Excellent consistency in both composition and performance

Corn steep liquor (CSL) is a common by-product of the corn wet-milling industry.  This by-product has found applications from animal feed to fermentation.  Typically, CSL has been utilized as a cost-effective source of nitrogen, vitamins, amino acids, minerals and other nutrients in a variety of fermentation applications.  However, as a “by-product” CSL can widely vary in consistency from lot to lot, and vary by manufacturer.  The difficulty in predicting composition and performance makes CSL a less than ideal nutrient source for many end users.

Solulys is not a “by-product”, rather a corn steep type product developed specifically by Roquette.  The tightly controlled process is aimed at producing a characteristic product profile that differentiates Solulys K from CSL. 

We recently demonstrated at SIMB 2013 that Solulys can nearly double performance in both cell growth and enzyme productivity compared to commercial CSL offerings.  Solulys was also very comparable in performance to typical organic nitrogen sources such as corn peptones, potato peptones and soy flour.

In this presentation, we will further demonstrate the compositional consistency of Solulys including growth factors such as vitamins, minerals, amino acids and organic acids from batch to batch.  Performance consistency will also be examined utilizing Bacillus subtilis (ATCC #21770) and Saccharomyces cerevisiae fermentation models.  Solulys demonstrates advantages as a dependable nitrogen source based on these results.

In conclusion, Solulys provides excellent consistency in both composition and performance, and can be an excellent, cost-effective nutrient source in fermentation applications.