The acids produced from sugar by a Penicillium parasitic upon Aspergillus niger

Publisher Website
Google Scholar
Abstract
A Penicillium, with affinities in the luteum-purpurogenum group, occurring as a parasite on A. niger, is descr. Grown on nutrient sucrose solution at 30[degree] in the presence of chalk it develops a diffusible blood-red color. Besides Ca citrate and traces of Ca oxalate, the soluble Ca compound of an acid substance insoluble in water but soluble in alcohol, is formed. In the absence of chalk neither citric nor oxalic acid is detected, but the insoluble acid encrusts the mycelium and glass. Similar results are obtained with glucose and fructose. The m.p. of the purified substance is 201-202[degree]. Micro-analysis gives C18H20O7. It titrates indefinitely in the cold with NaOH, but as a tetrabasic acid on boiling. It is probably identical with "glauconic acid I," derived by Wijkman from a P. glaucum.

This publication has 1 reference indexed in Scilit: