THE SOURCE OF TRACE AND ESSENTIAL ELEMENTS

Constituent Peptone Tryptone Casamino Acids Yeast Extract 

All the required metallic elements can be supplied as nutrients in the form of the cations of inorganic salts. K, Mg, Ca and Fe are normally required in relatively large amounts and should normally always be included as salts in culture media. Table 9 shows which salts are soluble and which are insoluble in water, as well as commonly used inorganic and trace elements and concentration ranges. 

Composition of a concentrated French Stillage (Ethanol-ffom-beet molasses) 

The combination of minerals is also important in regulating the electrolytic and osmotic properties of the cell interior. In most cases, the complex industrial carbon and/or nitrogen sources supply sufficient minerals for proper fermentation. 

---