Distribution of photoactive ß-carboline alkaloids across Passiflora caerulea floral organs.
Photochem Photobiol
; 100(1): 87-100, 2024.
Article
em En
| MEDLINE
| ID: mdl-37448143
ABSTRACT
This study reports valuable information regarding the presence and concentration of a series of photoactive ß-carboline (ßCs) alkaloids (norharmane, harmane, harmine, harmol, harmaline, and harmalol) and their distribution across the floral age and organs of Passiflora caerulea. UHPLC-MS/MS data reported herein reveal that the ßCs' content ranged from 1 to 110 µg kg-1 , depending on the floral organ and age. In certain physiologically relevant organs, such as anthers, ßCs' content was one order of magnitude higher than in other organs, suggesting a special role for ßCs in this specific organ. ßCs' content also varied in a structure-dependent manner. Alkaloids bearing a hydroxyl group at position C(7) of the main ßC ring were present at concentrations one order of magnitude higher than other ßC derivatives investigated. UV-visible and fluorescence spectroscopy of the flower extracts provided complementary information regarding other biologically relevant groups of chromophores (phenolic/indolic derivatives, flavonoids/carotenes, and chlorophylls). Since flowers are constantly exposed to solar radiation, the presence of photoactive ßCs in floral organs may have several (photo)biological implications that are further discussed.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Passiflora
/
Alcaloides
Idioma:
En
Revista:
Photochem Photobiol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Argentina