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.
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