1959 年 79 巻 2 号 p. 223-225
Formation ratio of thiolutin and aureothricin, the antibiotics produced by the Streptomyces sp., was shown to be determined by infrared absorption spectral analysis. Spectral measurements were made by the KBr-pellet method. The key bands are at 973 and 943cm-1. Determination of a standard mixed sample was effected with standard deviation of 1.6%. Some valuable observations were gained with regard to production mechanism of the Streptomyces sp.