Water-soluble. Produced through aqueous extraction of autolysed brewer’s yeast. High content of vitamins. Ideal, therefore, in many standard nutrient media, e.g. LB-medium as for vitamins, carbohydrates, and amino acids.
Total nitrogen | ≥8 % |
Amino nitrogen | 4.8-6.3 % |
Ratio AN/TN | 41-60 |
Loss on drying | ≤6 % |
Ash | ≤18 % |
pH (5 % in H2O) | 6.4-7.4 |
Solubility (5 % in H2O) | clear |