RT journal article
T1 Assessment of Ultrasound Assisted Extraction as an Alternative Method for the Extraction of Anthocyanins and Total Phenolic Compounds from Maqui Berries (Aristotelia chilensis (Mol.) Stuntz)
A1 Vázquez Espinosa, Mercedes
A1 Velasco González de Peredo, Ana
A1 Ferreiro González, Marta
A1 Carrera Fernández, Ceferino Adrián
A1 Palma Lovillo, Miguel
A1 Fernández Barbero, Gerardo
A1 Espada Bellido, Estrella
A2 Química Analítica
A2 Química Orgánica
K1 anthocyanins
K1 Aristotelia chilensis (Mol.) Stuntz
K1 maqui berry
K1 food analysis
K1 phenolic compounds
K1 superfruit
K1 ultrasound assisted extraction
AB Research interest regarding maqui (Aristotelia chilensis) has increased over the last yearsdue to its potential health benefits as one of the most antioxidant-rich berries. Ultrasound-assistedextraction (UAE) is an advanced green, fast, and ecological extraction technique for the production ofhigh quality extracts from natural products, so it has been proposed in this work as an ideal alternativeextraction technique for obtaining extracts of high bioactivity from maqui berries. In order todetermine the optimal conditions, the extraction variables (percentage of methanol, pH, temperature,ratio “sample mass/volume of solvent”, amplitude, and cycle) were analyzed by a Box-Behnkendesign, in conjunction with the response surface method. The statistical analysis revealed that thetemperature and the percentage of methanol were the most influential variables on the extractionof the total phenolic compounds and total anthocyanins, respectively. The optimal extraction timewas determined at 15 min for total phenolic compounds, while it was only 5 min for anthocyanins.The developed methods showed a high precision level with a coefficient of variation of less than5%. Finally, the new methods were successfully applied to several real samples. Subsequently, theresults were compared to those that were obtained in previous experiments by means of microwaveassisted extraction (MAE). Similar extraction yields were obtained for phenolic compounds underoptimized conditions. However, UAE proved to be slightly more efficient than MAE in the extractionof anthocyanins.
PB MDPI
SN 2073-4395
YR 2019
FD 2019-03
LK http://hdl.handle.net/10498/21244
UL http://hdl.handle.net/10498/21244
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 04-nov-2026