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Assessment of radical scavenging capacity of Agrimonia extracts isolated by supercritical carbon dioxide

Venskutonis, P R; Skemaite, M and Sivik, Björn LU (2008) In Journal of Supercritical Fluids 45(2). p.231-237
Abstract
The results on the extraction of natural compounds from Agrimonia eupatoria and Agrimonia procera by using supercritical carbon dioxide (SC-CO2) are presented. Two agrimony species were extracted in laboratory scale equipment at various parameters and it was found that in case of A. eupatoria the increase in extraction pressure and the addition of a co-solvent ethanol remarkably increases the yield of the extracts, up to 4.25% at 25 MPa and 1% of ethanol. The highest yield from A. procera was 3.39% at the same conditions; however the dependence of pressure on extract yield was not so evident. In general, the extracts isolated at higher pressure were more effective free radical scavengers, although this dependence for some extracts,... (More)
The results on the extraction of natural compounds from Agrimonia eupatoria and Agrimonia procera by using supercritical carbon dioxide (SC-CO2) are presented. Two agrimony species were extracted in laboratory scale equipment at various parameters and it was found that in case of A. eupatoria the increase in extraction pressure and the addition of a co-solvent ethanol remarkably increases the yield of the extracts, up to 4.25% at 25 MPa and 1% of ethanol. The highest yield from A. procera was 3.39% at the same conditions; however the dependence of pressure on extract yield was not so evident. In general, the extracts isolated at higher pressure were more effective free radical scavengers, although this dependence for some extracts, especially obtained from A. procera was rather complicated. The concentration of phenolics in A. eupatoria and A. procera SC-CO2 extracts was 2.3-8.3 and 2.5-7.1 mg/g, respectively. The compositions of SFE and organic solvent extracts were totally different. (C) 2008 Elsevier B.V. All rights reserved. (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
phenolic compounds, radical scavenging capacity, extraction, carbon dioxide, Agrimonia eupatoria L., Agrimonia procera Wallr.
in
Journal of Supercritical Fluids
volume
45
issue
2
pages
231 - 237
publisher
Elsevier
external identifiers
  • wos:000256392800016
  • scopus:42749091817
ISSN
0896-8446
DOI
10.1016/j.supflu.2008.01.012
language
English
LU publication?
yes
id
92340885-4a3d-48ca-9480-a40b2610c854 (old id 1201185)
date added to LUP
2008-09-12 15:32:59
date last changed
2017-01-01 04:44:34
@article{92340885-4a3d-48ca-9480-a40b2610c854,
  abstract     = {The results on the extraction of natural compounds from Agrimonia eupatoria and Agrimonia procera by using supercritical carbon dioxide (SC-CO2) are presented. Two agrimony species were extracted in laboratory scale equipment at various parameters and it was found that in case of A. eupatoria the increase in extraction pressure and the addition of a co-solvent ethanol remarkably increases the yield of the extracts, up to 4.25% at 25 MPa and 1% of ethanol. The highest yield from A. procera was 3.39% at the same conditions; however the dependence of pressure on extract yield was not so evident. In general, the extracts isolated at higher pressure were more effective free radical scavengers, although this dependence for some extracts, especially obtained from A. procera was rather complicated. The concentration of phenolics in A. eupatoria and A. procera SC-CO2 extracts was 2.3-8.3 and 2.5-7.1 mg/g, respectively. The compositions of SFE and organic solvent extracts were totally different. (C) 2008 Elsevier B.V. All rights reserved.},
  author       = {Venskutonis, P R and Skemaite, M and Sivik, Björn},
  issn         = {0896-8446},
  keyword      = {phenolic compounds,radical scavenging capacity,extraction,carbon dioxide,Agrimonia eupatoria L.,Agrimonia procera Wallr.},
  language     = {eng},
  number       = {2},
  pages        = {231--237},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Assessment of radical scavenging capacity of Agrimonia extracts isolated by supercritical carbon dioxide},
  url          = {http://dx.doi.org/10.1016/j.supflu.2008.01.012},
  volume       = {45},
  year         = {2008},
}