Thermophilic Streptomyces found in sugarcane environments in Jujuy, Argentina

The thermophilic Streptomyces strains isolated from: a) airborne dust of bagasse storing area, b) dry sugarcane residues and c) stored sugar manufacture wastes are described. The strains grown at maximal rates at 50 degrees C have a gray shade after 48 h. All the mature spores retain the malachite green stain. They were identified with Williams' clusters: S. chromofuscus, S. cyaneus, S. microflavus, S. antibioticus, S. halstedii and S. violaceusniger. The last three clusters coincide with the species found by other workers in bagasse.