[Use of protein-free potato juice concentrates in the production of tetracycline].

The study on the use of potato juice concentrate in tetracycline production showed that the tetracycline-producing strain 3-NK of Actinomyces aureofaciens grown on seed and fermentation media containing 2--2.5 and 0.35--0.45 per cent (by dry substance) of the concentrate produced the same antibiotic yield as that on the media with corn steep liquor.