| Texto completo | |
| Autor(es): |
dos Santos, Katia Pereira
[1]
;
Sedano-Partida, Martha Dalila
[1]
;
Sala-Carvalho, Wilton Ricardo
[1]
;
San Juan Loureiro, Beatriz Ortega
[1]
;
da Silva-Luz, Cintia Luiza
[1]
;
Furlan, Claudia Maria
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Biociencias, Dept Bot, Rua Matao 277, BR-05508090 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INDUSTRIAL CROPS AND PRODUCTS; v. 112, p. 705-715, FEB 2018. |
| Citações Web of Science: | 1 |
| Resumo | |
The evolution of plant special metabolites is currently viewed within a phylogenetic perspective: the biosynthetic machinery needed to produce plant defense must be well-conserved and this origin should be monophyletic. But some questions thus arise: does a species occurring in different biogeographic domains present different levels of special metabolites? And if so, will it also represent a difference in its biological activity? For this study, seven Hyptis (Lamiaceae) species was collected and extracted by maceration in 70% ethanol, analyzed by highperformance liquid chromatography coupled with a diode array detector (HPLC-DAD) and performing antioxidants assays: DPPH (2,2-Diphenyl-1- picrylhydrazyl) and ABTS (2,20-Azino-bis(3-ethyl-benzthiazoline-6-sulfonic acid) radical scavenging activity, Iron (III) reduction to iron (II) and oxygen radical absorbance capacity (ORAC). Phenolic classes observed for Hyptis spp. were: phenolic acids, flavonoids, chlorogenic acid derivatives, and cinnamic acid derivatives. Results point out to a tendency of Hyptis populations growing at Cerrado domain present lower levels of phenolic compounds when compared to populations growing at Atlantic Forest. Furthermore, the abiotic microenvironment seems to exert a stronger influence regarding the phenolic composition and consequently the antioxidant activity of a plant extract than the phytogeographic domain. (AU) | |
| Processo FAPESP: | 12/10079-0 - Croton L. (Euphorbiaceae Juss.): metabólitos secundários e atividade biológica |
| Beneficiário: | Cláudia Maria Furlan |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |