Studies in the biochemistry of micro-organisms

Studies in the Biochemistry of Micro-Organisms

Bracken, Pocker & Raistrick (1954) described the isolation of two nitrogen-containing products from different cultures of Penicillium cyclopium Westling. One of these, previously isolated from Penicillium viridicatum Westling by Cunningham & Freeman (1953) and named viridicatin, C15H11NO2, was shown to be 2,3-dihydroxy-4phenylquinoline or its keto-tautomer (I), by degradative methods and unequi...

Cxxxi. Studies in the Biochemistry of Micro-organisms

Lxxi. Studies in the Biochemistry of Micro-organisms

THE name Aspergillus terreus is used by Thom and Church [1918; 1926] to cover a series of strains which have a number of well-marked morphological features in common, but which show a certain amount of variation in colour and type of growth. The conidial colour may range from pale cinnamon to fairly deep brown; the texture of the surface growth may vary from smooth velvety to definitely floccos...

Clxxviii. Studies in the Biochemistry of Micro-organisms

SPIcuLIsPoRIc acid (C17H2806, the y-lactone of y-hydroxy-38-dicarboxypentadecanoic acid) was first isolated by Clutterbuck et al. [1931] as a metabolic product of P. spiculisporum Lehman, when grown on Czapek-Dox solution with glucose as sole source of carbon. They also determined its structural formula. Later, Birkinshaw and Raistrick [1934] showed that this acid together with a related acid, ...

The Biochemistry of Micro - Organisms

I t has been known for some time that Penicillium citrinum Thom when grown on suitable media produces a characteristic lemon yellow colour. Thus Thom in his monograph on “ Cultural Studies of species of 1910), says, “ P. citrinum produces a lemon yellow colour, soluble in alcohol, in media containing sugars, milk, gelatin, bread and potato.” This colouring matter was not isolated, however, nor ...