Caffeine and theobromine in epicuticular wax of Ilex paraguariensis A. St.-Hil.
Phytochemistry
; 55(7): 853-7, 2000 Dec.
Article
em En
| MEDLINE
| ID: mdl-11190409
ABSTRACT
Caffeine and theobromine were identified and quantified in leaf epicuticular waxes of Ilex paraguariensis A. St.-Hil. (Aquifoliaceae). The total epicuticular leaf wax content was ca. 0.5% on average of dry leaf weight. Epicuticular caffeine and theobromine contents varied from 0.16 to 127.6 microg/mg and from 0 to 9.5 microg/mg of wax, respectively. For some selected samples, the intracellular methylxanthine concentration was also determined. A positive correlation was found between inner and epicuticular caffeine contents.
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Base de dados:
MEDLINE
Assunto principal:
Teobromina
/
Cafeína
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article