RT info:eu-repo/semantics/article
T1 Phenolic Compounds Extraction of Arbutus unedo L.: Process Intensification by Microwave Pretreatment
A1 Alexandre, Agostinho
A1 Matias, Ana A.
A1 Bronze, Maria Rosario
A1 Cocero Alonso, María José
A1 Mato Chaín, Rafael Bartolomé
K1 Arbutus unedo
K1 Phenolic compounds
K1 Compuestos fenólicos
AB Arbutus unedo L., commonly known as the strawberry-tree fruit, is an endemic species of the Mediterranean flora. Microwave extraction technology has been considered as a fast and “green” method for the production of extracts rich in bioactive compounds, although the energy consumption is high. To overcome this bottleneck, microwave was used as a pretreatment procedure in short time periods. This technique promotes the burst of intracellular vacuoles leading to an increase in the lixiviation of phenolic compounds. Different approaches were tested, namely a solvent-free irradiation (SFI), a solvent-assisted irradiation (SAI) and a pressurized solvent-assisted irradiation (PSAI). After irradiation, a solid–liquid extraction procedure was performed using a mixture of water and ethanol. A kinetic evaluation of the total phenolic content (TPC) was performed using the Folin–Ciocalteu method. For the total anthocyanin content, a UV-spectrophotometric method was used. HPLC-UV and LC-MS were used for TPC and identification of present compounds. Microwave irradiation led to an increase in TPC of extracts after SAI (52%) and PSAI (66%) along with a reduction in time of extraction from 30 min to less than 2 min. The anthocyanin content also increased by 66% for the SAI and PSAI extractions.
PB MDPI
SN 2227-9717
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/52455
UL https://uvadoc.uva.es/handle/10324/52455
LA eng
NO Processes, 2020, vol. 8, n. 3, 298
NO Producción Científica
DS UVaDOC
RD 29-abr-2024