Yeast Peptone
Peptones are partial hydrolysates of proteins and mainly contain peptides, but also amino acids as well as smaller amounts of inorganic salts and other compounds such as lipids, vitamins and sugars. 
Peptones are widely used for industrial fermentations, e.g. to produce probiotics, and as a core ingredient of complex culture media by cell culture and microbiological laboratories.
While traditional peptones are produced with animal or vegetable protein, the alternative yeast peptones use selected, high-protein strains of baker's yeast (Saccharomyces cerevisiae) as their source. The raw material is hydrolyzed, separated and concentrated to produce a water-soluble, stable, safe and consistent quality peptone.

Advantages of yeast peptones over other peptones: