Chemophenetic study of Ocotea canaliculata (Lauraceae) by UHPLC–HRMS and GNPS
2022
Antonio, Ananda da Silva | dos Santos, Gustavo Ramalho Cardoso | Pereira, Henrique Marcelo Gualberto | da Veiga-Junior, Valdir Florêncio | Wiedemann, Larissa Silveira Moreira
The metabolic fingerprint of a non-volatile fraction of Ocotea canaliculata (Rich.) Mez (Lauraceae) leaves was determined by UHPLC–HRMS analysis. Twenty-four compounds were suggestively identified by GNPS-FBMN. The results revealed a large production of flavonoids, mainly flavones and flavanones, a chemical class poorly described in the Ocotea genus. Within the identified compounds, four are being described for the first time in this genus. The major metabolite detected was astilbin, with a concentration corresponding to 23.2 ± 1.58% of the extracts. The expressive content of astilbin also highlights it as a chemical marker for the species. As a species that is classified as a complex, qualitative and semi-quantitative features obtained through the O. canaliculata flavonoid fingerprint can be further used for a more precise circumscription and species-specific characterization.
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