RT info:eu-repo/semantics/article
T1 Microwave-assisted extraction of polyphenols from Clinacanthus nutans Lindau medicinal plant: Energy perspective and kinetics modeling
A1 Mustapa, Ana Najwa Binti
A1 Martín, Alexandra
A1 Gallego, J.R.
A1 Mato Chaín, Rafael Bartolomé
A1 Cocero Alonso, María José
K1 Microwave-assisted extraction
K1 kinetics
AB Clinacanthus nutans Lindau (C. nutans, “snake grass”) is a well-known medicinal plant in South-East Asia that recently has attracted attention for its high polyphenol content and its medical and nutraceutical applications. In this work, polyphenols have been recovered from C. nutans by microwave-assisted extraction (MAE). The influence of the main process parameters has been analyzed: ethanol concentration in the extraction solvent mixture, microwave energy applied and solvent-to-feed ratio. Model results have been correlated with mathematical models of the extraction process, that allow linking the observed variations in extraction curves with modifications of mass transfer and equilibrium parameters. Moreover, in order to assess the energy efficiency of the process, results were studied and explained in view of the specific energy absorbed during the microwave treatment (J/g). Results indicate that microwave pre-treatment improves extraction rate by a factor of 2–5, yielding the best results when a water–ethanol solvent mixture with 50%vol of ethanol is used at a solvent-to-feed ratio (S/F) of 14 mL/g.
PB Elsevier
YR 2015
FD 2015
LK http://uvadoc.uva.es/handle/10324/21917
UL http://uvadoc.uva.es/handle/10324/21917
LA eng
NO Chemical Engineering and Processing: Process Intensification, Volume 97, November 2015, Pages 66-74
NO Producción Científica
DS UVaDOC
RD 23-abr-2024