Abstract
The occurrence of Ls-allo-isocitric acid in nature, as a new fugal product, was first found in the culture medium of Pen. purpurogenum Stoll var. rubri-sclerotium Thom. No. 1148. The acid was obtained as its γ-lactone in a crystalline form.
Some chemical and physical characters were described. The acid was the only one detectable acid accumulated by this fungus in the given condition, and the yield of the acid by weight exceeded about 70% of the consumed glucose.
