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Enhanced extraction of flavonoids from Odontonema strictum leaves with antioxidant activity using supercritical carbon dioxide fluid combined with ethanol

Ouédraogo, Jean Claude W.; Dicko, Cedric LU ; Kini, Félix B.; Bonzi-Coulibaly, Yvonne L. and Dey, Estera Szwajcer LU (2018) In Journal of Supercritical Fluids 131. p.66-71
Abstract

Flavonoids were extracted from Odontonema strictum leaves by supercritical carbon dioxide, with ethanol. The effect of three independents variables (time, pressure and temperature) on the Total Flavonoid Content (TFC) were optimized by factorial investigation. The TFC and flavonoid recovery varies respectively from 99.33 to 247.78 mg/g of dried extract and 10.68–18.92 mg/g of dried leaves powder, while the conventional solvent extraction (CSE) yielded 36.45 mg/g and 3.13 mg/g. Analysis of the factorial identified the optimal conditions with an extraction time of 270 min and a pressure of 200 bar, the temperature had no effect within the tested ranges. The predicted TFC was 203.11 mg/g under optimal conditions and experimentally 230.48... (More)

Flavonoids were extracted from Odontonema strictum leaves by supercritical carbon dioxide, with ethanol. The effect of three independents variables (time, pressure and temperature) on the Total Flavonoid Content (TFC) were optimized by factorial investigation. The TFC and flavonoid recovery varies respectively from 99.33 to 247.78 mg/g of dried extract and 10.68–18.92 mg/g of dried leaves powder, while the conventional solvent extraction (CSE) yielded 36.45 mg/g and 3.13 mg/g. Analysis of the factorial identified the optimal conditions with an extraction time of 270 min and a pressure of 200 bar, the temperature had no effect within the tested ranges. The predicted TFC was 203.11 mg/g under optimal conditions and experimentally 230.48 mg/g. The antioxidant activity with 2,2-Diphenyl-1-picrylhydrazyl method of the extracts under optimum conditions was 49.21% while the CSE extract was 37.05%. The TLC analysis of the supercritical fluid extracts from the optimum conditions showed 5 majors flavonoids.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
Antioxidant activity, Odontonema strictum, Response surface methodology, Supercritical fluid extraction, Total flavonoid content
in
Journal of Supercritical Fluids
volume
131
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:85028889996
ISSN
0896-8446
DOI
10.1016/j.supflu.2017.08.017
language
English
LU publication?
yes
id
6b3dc5ec-0072-414b-b933-d877069f0e36
date added to LUP
2017-09-25 13:02:32
date last changed
2018-01-07 12:19:17
@article{6b3dc5ec-0072-414b-b933-d877069f0e36,
  abstract     = {<p>Flavonoids were extracted from Odontonema strictum leaves by supercritical carbon dioxide, with ethanol. The effect of three independents variables (time, pressure and temperature) on the Total Flavonoid Content (TFC) were optimized by factorial investigation. The TFC and flavonoid recovery varies respectively from 99.33 to 247.78 mg/g of dried extract and 10.68–18.92 mg/g of dried leaves powder, while the conventional solvent extraction (CSE) yielded 36.45 mg/g and 3.13 mg/g. Analysis of the factorial identified the optimal conditions with an extraction time of 270 min and a pressure of 200 bar, the temperature had no effect within the tested ranges. The predicted TFC was 203.11 mg/g under optimal conditions and experimentally 230.48 mg/g. The antioxidant activity with 2,2-Diphenyl-1-picrylhydrazyl method of the extracts under optimum conditions was 49.21% while the CSE extract was 37.05%. The TLC analysis of the supercritical fluid extracts from the optimum conditions showed 5 majors flavonoids.</p>},
  author       = {Ouédraogo, Jean Claude W. and Dicko, Cedric and Kini, Félix B. and Bonzi-Coulibaly, Yvonne L. and Dey, Estera Szwajcer},
  issn         = {0896-8446},
  keyword      = {Antioxidant activity,Odontonema strictum,Response surface methodology,Supercritical fluid extraction,Total flavonoid content},
  language     = {eng},
  month        = {01},
  pages        = {66--71},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Enhanced extraction of flavonoids from Odontonema strictum leaves with antioxidant activity using supercritical carbon dioxide fluid combined with ethanol},
  url          = {http://dx.doi.org/10.1016/j.supflu.2017.08.017},
  volume       = {131},
  year         = {2018},
}