Enzymatic Breakdown of Polymetaphosphate. VI. Influence of Nutritional Factors on the Polymetaphosphatase Production of Aspergillus niger.

Abstract

The influenceof the C source, of trace elements, of the N source, and of pH in the growth medium of A. niger was studied in reference to polymetaphosphatase production by the mold. Fe, Cu, Mn increased enzyme production. At pH 1.5 to 2.0 production was greatly stimulated. Inorganic sources of N (NO3-, NH4+) were superior to organic (glycine, urea, asparagine).