The component fatty acids of Penicillium spinulosum fat.

The fatty acid ingredients in fat synthesis in Aspergillu8 nidulan8 and in Penicillium lilacinum have been identified and estimated by Singh, Walker & Meara (1955) and by Singh, Shah & Walker (1956a). Penicillium 8pinulo8um produces fat in high yield when grown in a chemically defined glucose medium (Garrido & Walker, 1953; Garrido, Woodbine & Walker, 1963) or in a similar medium in which sucrose is the source of carbon (Gad & Walker, 1954), and, judging from the results of a preliminary nutritional trial, this fat does not seem to be toxic to rats (personal communication from Dr T. Moore, Dunn Nutritional Laboratory, Cambridge). More extensive trials of this fat as food are planned and its fatty acid composition has therefore been determined.