Supercritical fluid extraction and hydrodistillation for the recovery of bioactive compounds from Lavandula viridis L'Her

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Patricia Costa (Autor) Outra; Clara Grosso (Autor) Outra; Sandra Goncalves (Autor) Outra; Paula B Andrade (Autor) FFUP; Patricia Valentao (Autor) FFUP; Gabriela Bernardo Gil, MG (Autor) Outra; Anabela Romano (Autor) Outra

Revista

Título: Food Chemistry

Vol. 135 Nº 3

Páginas: 112-121

ISSN: 0308-8146

Editora: Elsevier

Indexação

ISI Web of Knowledge - 32 Citações

Scopus - 45 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: P-002-4AS

DOI: 10.1016/j.foodchem.2012.04.108

Abstract (EN): The chemical profiles of bioactive essential oil and extracts obtained by hydrodistillation (HD) and supercritical fluid extraction (SFE), respectively, from Lavandula viridis were compared. The SFE was performed at 40 degrees C and at extraction pressures of 12 or 18 MPa in two different separators. Evaluation of the essential oil and SFE extracts by GC-FID and GC-IT-MS revealed that oxygen-containing monoterpenes were the major constituents in both cases, but there were important differences between the chemical profiles produced by the different extraction techniques. More compounds were isolated by HD but higher yields were achieved by SFE. Camphor was the main component identified in the essential oil (31.59 +/- 1.32%), and in extracts from the first (1.61 +/- 0.34%) and second SFE separators (22.48 +/- 1.49%) at 12 MPa. In contrast, the first separator SFE extract at 18 MPa (heavy compounds) was dominated by myrtenol (5.38 +/- 2.04%) and camphor (4.81 +/- 1.93%), whereas the second separator SFE extract (volatiles) was dominated by verbenone (13.97 +/- 5.27%). The essential oil and heavy compound extracts from the first separator possessed antioxidant and anti-cholinesterase activities. Our data show that phytochemicals from the aerial parts of L. viridis could be developed as natural antioxidant and anti-cholinesterase drugs, with particular applications in the symptomatic treatment of Alzheimer's disease.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10