TY - JOUR
T1 - Extraction of aromatic volatiles by hydrodistillation and supercritical fluid extraction with CO2 from Helichrysum italicum subsp. picardii growing in Portugal
AU - Costa, P.
AU - Loureiro, José Miguel
AU - Teixeira, Miguel A.
AU - Rodrigues, Alírio E.
N1 - Funding Information:
The authors thank Professor António Pereira Coutinho from the Faculty of Sciences and Technology, University of Coimbra and the Herbarium of the Botanical Institute of the University of Coimbra (COI) for the authentication of the plant material, and Professor Manuel Coelho and Professor Maria do Carmo Pereira (Faculty of Engineering, University of Porto, Portugal) for the use of their microplate reader. This work was partially supported by Portuguese Science and Technology Foundation and project UID/EQU/50020/2013, QREN – ON2 – FEDER – NORTE-07-0124-FEDER-0000012, and QREN – ON2 – FEDER – NORTE-07-0162-FEDER-000050, financed by FEDER through COMPETE – Programa Operacional Factores de Competitividade. P. Costa and M.A. Teixeira acknowledge their postdoctoral grants from the Portuguese Science and Technology Foundation ( SFRH/BPD/93108/2013 and SFRH/BPD/76645/2011 , respectively).
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/12/23
Y1 - 2015/12/23
N2 - Volatiles from Helichrysum italicum subsp. picardii growing in Portugal were extracted by supercritical fluid extraction with CO2 (SFE-CO2) under different conditions of pressure (9 and 12MPa) and particle size (<4mm and 4cm), in order to analyse their influence on the extraction yield, chemical profile, organoleptic properties and antioxidant activity. Hydrodistillation was used as conventional technique for comparison purposes. The results showed that pressure and particle size influenced the yield of SFE-CO2 extraction. Chemical analysis highlighted the abundance of monoterpene hydrocarbons in the essential oil and sesquiterpene hydrocarbons in the SFE-CO2 extracts. In terms of organoleptic properties, the SFE-CO2 extraction allowed the recovery of pleasantly scented fragrances resembling the original scent of the living plant H. italicum subsp. picardii found in Portugal. The SFE-CO2 extracts isolated at 12MPa showed free radical scavenging ability at all tested concentrations. This study allowed the extraction and identification of high-value aromatic components with pleasant fragrance properties suggesting the Portuguese coast as an exploitable source of relevant plant matrices.
AB - Volatiles from Helichrysum italicum subsp. picardii growing in Portugal were extracted by supercritical fluid extraction with CO2 (SFE-CO2) under different conditions of pressure (9 and 12MPa) and particle size (<4mm and 4cm), in order to analyse their influence on the extraction yield, chemical profile, organoleptic properties and antioxidant activity. Hydrodistillation was used as conventional technique for comparison purposes. The results showed that pressure and particle size influenced the yield of SFE-CO2 extraction. Chemical analysis highlighted the abundance of monoterpene hydrocarbons in the essential oil and sesquiterpene hydrocarbons in the SFE-CO2 extracts. In terms of organoleptic properties, the SFE-CO2 extraction allowed the recovery of pleasantly scented fragrances resembling the original scent of the living plant H. italicum subsp. picardii found in Portugal. The SFE-CO2 extracts isolated at 12MPa showed free radical scavenging ability at all tested concentrations. This study allowed the extraction and identification of high-value aromatic components with pleasant fragrance properties suggesting the Portuguese coast as an exploitable source of relevant plant matrices.
KW - Chemical profile
KW - Essential oil
KW - Extraction yield
KW - Free radical scavenging activity
KW - Organoleptic properties
KW - SFE-CO extracts
UR - http://www.scopus.com/inward/record.url?scp=84943514835&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2015.09.042
DO - 10.1016/j.indcrop.2015.09.042
M3 - Article
AN - SCOPUS:84943514835
VL - 77
SP - 680
EP - 683
JO - Industrial Crops and Products
JF - Industrial Crops and Products
SN - 0926-6690
ER -