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Pigment production of Cryptococcus neoformans grown with extracts of Guizotia abyssinica.
Appl Microbiol ; 22(3): 478-9, 1971 Sep.
Article en En | MEDLINE | ID: mdl-5119209
ABSTRACT
Brown pigment(s) formed in Cryptococcus neoformans when grown on media containing extracts of the seeds of Guizotia abyssinica cannot be extracted by common organic solvents or by 6 n HCl or 2 n NaOH. A similar pigmentation was observed in C. neoformans when grown on a medium containing caffeic acid isolated from the hydrolyzed methanol extract of G. abyssinica seeds. Its methyl ester and the diacetate thereof, as well as the following structurally related compounds, 3-hydroxytyramine, 3,4-dihydroxybenzoic acid, 3,4-dihydroxyphenylethanolamine, and 4-hydroxy-3,5-dimethoxycinnamic acid, brought about similar pigmentation. However, 2,4-, 2,5-, 2,6-, and 3,5-dihydroxybenzoic acids, tyrosine, phenylalanine, cinnamic acid, 4-hydroxycinnamic acid, and 4-hydroxy-3-methoxycinnamic acid did not cause coloration in C. neoformans.
Asunto(s)

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Pigmentos Biológicos / Plantas / Cryptococcus / Medios de Cultivo Idioma: En Revista: Appl Microbiol Año: 1971 Tipo del documento: Article

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Pigmentos Biológicos / Plantas / Cryptococcus / Medios de Cultivo Idioma: En Revista: Appl Microbiol Año: 1971 Tipo del documento: Article