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Article

Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction

CICECO—Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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Academic Editor: Juan Francisco García Martín
Processes 2021, 9(7), 1159; https://doi.org/10.3390/pr9071159
Received: 21 June 2021 / Revised: 1 July 2021 / Accepted: 2 July 2021 / Published: 3 July 2021
(This article belongs to the Special Issue Extraction, Utilization and Conversion of Woody Biomass)
Forestry biomass is a by-product which commonly ends up being burnt for energy generation, despite comprising valuable bioactive compounds with valorisation potential. Leaves of Acacia dealbata were extracted for the first time by supercritical fluid extraction (SFE) using different conditions of pressure, temperature and cosolvents. Total extraction yield, individual triterpenoids extraction yields and concentrations were assessed and contrasted with Soxhlet extractions using solvents of distinct polarity. The extracts were characterized by gas chromatography coupled to mass spectrometry (GC-MS) and target triterpenoids were quantified. The total extraction yields ranged from 1.76 to 11.58 wt.% and the major compounds identified were fatty acids, polyols, and, from the triterpenoids family, lupenone, α-amyrin and β-amyrin. SFE was selective to lupenone, with higher individual yields (2139–3512 mg kgleaves1) and concentrations (10.1–12.4 wt.%) in comparison to Soxhlet extractions, which in turn obtained higher yields and concentrations of the remaining triterpenoids. View Full-Text
Keywords: Acacia dealbata; GC-MS; leaves; lupenone; supercritical fluid extraction; Soxhlet extraction; triterpenoids Acacia dealbata; GC-MS; leaves; lupenone; supercritical fluid extraction; Soxhlet extraction; triterpenoids
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MDPI and ACS Style

Rodrigues, V.H.; de Melo, M.M.R.; Portugal, I.; Silva, C.M. Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction. Processes 2021, 9, 1159. https://doi.org/10.3390/pr9071159

AMA Style

Rodrigues VH, de Melo MMR, Portugal I, Silva CM. Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction. Processes. 2021; 9(7):1159. https://doi.org/10.3390/pr9071159

Chicago/Turabian Style

Rodrigues, Vítor H., Marcelo M.R. de Melo, Inês Portugal, and Carlos M. Silva. 2021. "Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction" Processes 9, no. 7: 1159. https://doi.org/10.3390/pr9071159

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