Acidicase Peptone is a hydrochloric acid hydrolysate of casein. The manufacturing process produces a casein hydrolysate, which has a high salt content of approximately 37% and nitrogen content of approximately 8%.

• Nutritional supplement in vitamin assay, susceptibility testing and other laboratory media and microbial fermentation

The hydrolysis of the casein, a milk protein rich in amino acid nitrogen, is carried out until all the nitrogen is converted to amino acids or other compounds of relative simplicity. Casein contains little cystine and is deficient in tryptophan, which is destroyed by the acid treatment.