Extraction of Eucalyptus leaves using solvents of distinct polarity. Cluster analysis and extracts characterization
authors Rodrigues, VH; de Melo, MMR; Portugal, I; Silva, CM
nationality International
journal JOURNAL OF SUPERCRITICAL FLUIDS
author keywords Biomass pretreatment; Cluster analysis; Eucalyptus globulus leaves; Soxhlet extraction; Supercritical CO2 extraction; Triterpenic acids
keywords SUPERCRITICAL-FLUID EXTRACTION; ESSENTIAL OIL COMPONENTS; GLOBULUS BARK; TRITERPENIC ACIDS; URSOLIC ACID; OPERATING-CONDITIONS; EXPERIMENTAL-DESIGN; FTIR SPECTROSCOPY; GC-MS; IDENTIFICATION
abstract Extracts of Eucalyptus globulus leaves were produced and characterized aiming their enrichment in natural bioactive compounds such as triterpenic acids (TTAs). Soxhlet (methanol, ethanol and dichloromethane) and supercritical (CO2 with/without ethanol) extractions performed under different conditions were assessed by the total extraction yield, TTAs extraction yield, and extracts concentration, and the results were compared to published data for bark and/or leaves of other species. A fast and simple dewaxing pretreatment of the leaves was implemented and its influence on extract production was evaluated. The various extracts, the leaves and the pure TTAs were analyzed by Fourier Transform Infra-Red spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and Gas Chromatography-Mass Spectroscopy (GC-MS), and the data thoroughly discussed by chemometric methods. Overall, this work provides guidelines for the production of natural extracts enriched in triterpenic acids.
publisher ELSEVIER SCIENCE BV
issn 0896-8446
year published 2018
volume 135
beginning page 263
ending page 274
digital object identifier (doi) 10.1016/j.supflu.2018.01.010
web of science category Chemistry, Physical; Engineering, Chemical
subject category Chemistry; Engineering
unique article identifier WOS:000428000600031
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 3.122
5 year journal impact factor 3.001
category normalized journal impact factor percentile 67.536
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg