abstract
The chemical composition of the lipophilic and phenolic extractives of the leaves, stems and roots of the salt marsh plant Halimione portulacoides from the Aveiro Lagoon was thoroughly investigated by gas chromatography-mass spectrometry (GC-MS) and ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS), respectively. The lipophilic fraction of leaves and stems is mainly composed of long chain aliphatic acids and alcohols (both in the C16-C30 range) and smaller amounts of sterols, such as schottenol, beta-sitosterol and beta-sitostanol. The major component of roots extract is a triterpenic ketone, hop-17(21)-en-3-one, accounting for 2.8 g kg(-1) of dry material. Furthermore, thirteen phenolic compounds were firstly reported as constituents of this halophytic shrub. Among the studied plant tissues, leaves are the richest in phenolic compounds with 4.6 g kg(-1) of dry material, most of which correspond to sulfated flavonoids (3.1 g kg(-1) of dry material), particularly derivatives of isorhamnetin-sulfate. (C) 2013 Elsevier B.V. All rights reserved.
keywords
MESEMBRYANTHEMUM-EDULE L; SALT-MARSH SEDIMENTS; ANTIOXIDANT ACTIVITY; FLAVERIA-BIDENTIS; MASS-SPECTROMETRY; ANTIMICROBIAL ACTIVITIES; SULFATED FLAVONOIDS; KRAFT PULPS; L. AELLEN; HONG-KONG
subject category
Agriculture
authors
Vilela, C; Santos, SAO; Coelho, D; Silva, AMS; Freire, CSR; Neto, CP; Silvestre, AJD
our authors
Armando Jorge Domingues Silvestre
Full professor
Carla Vilela
Assistant Professor
Carlos Pascoal Neto
Raiz Director
Carmen Sofia da Rocha Freire Barros
Coordinating Researcher
Sónia Andreia Oliveira Santos
Assistant Researcheracknowledgements
The authors wish to thank FCT (Fundacao para a Ciencia e Tecnologia) and POPH/FSE for the postdoctoral grants to Carla Vilela (SFRH/BPD/84168/2012) and Sonia A. O. Santos (SFRH/BPD/84226/2012) and for funding CICECO (PEst-C/CTM/LA0011/2013) and QOPNA (PEst-C/QUI/UI0062/2013).