LAPSE:2020.0529
Published Article
LAPSE:2020.0529
Phenolic Compounds Extraction of Arbutus unedo L.: Process Intensification by Microwave Pretreatment
May 22, 2020
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.
Keywords
Arbutus unedo, microwave pretreatment, phenolic compounds, Process Intensification
Suggested Citation
Alexandre AMRC, Matias AA, Bronze MR, Cocero MJ, Mato R. Phenolic Compounds Extraction of Arbutus unedo L.: Process Intensification by Microwave Pretreatment. (2020). LAPSE:2020.0529
Author Affiliations
Alexandre AMRC: Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da Republica, 2780-157 Oeiras, Portugal [ORCID]
Matias AA: Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal [ORCID]
Bronze MR: Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da Republica, 2780-157 Oeiras, Portugal; Faculdade de Farmácia
Cocero MJ: Institute of Bioeconomy BioEcoUva, High Pressure Processes Group, Chemical Engineering and Environmental Technology, University of Valladolid, 47011 Valladolid, Spain [ORCID]
Mato R: Institute of Bioeconomy BioEcoUva, High Pressure Processes Group, Chemical Engineering and Environmental Technology, University of Valladolid, 47011 Valladolid, Spain [ORCID]
Journal Name
Processes
Volume
8
Issue
3
Article Number
E298
Year
2020
Publication Date
2020-03-05
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8030298, Publication Type: Journal Article
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LAPSE:2020.0529
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doi:10.3390/pr8030298
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May 22, 2020
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May 22, 2020
 
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May 22, 2020
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Calvin Tsay
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