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Optimization of an Ultrasound-Assisted Extraction Method for the Analysis of Major Anthocyanin Content in Erica australis Flowers

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URI: http://hdl.handle.net/10498/25183

DOI: 10.3390/molecules26102884

ISSN: 1420-3049

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2021_430.pdf (2.017Mb)
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Author/s
Carrera Fernández, Ceferino AdriánAuthority UCA; Aliaño González, María JoséAuthority UCA; Rodríguez López, Jaime; Ferreiro González, MartaAuthority UCA; Ojeda Copete, FernandoAuthority UCA; Fernández Barbero, GerardoAuthority UCA; Palma Lovillo, MiguelAuthority UCA
Date
2021-05
Department
Biología; Química Analítica
Source
Molecules 2021, 26(10), 2884
Abstract
Erica australis plants have been used in infusions and folk medicine for years for its diuretic and antiseptic properties and even for the treatment of infections. In addition, a recently published thorough study on this species has demonstrated its antioxidant, antibiotic, anti-inflammatory, anticarcinogenic and even antitumoral activities. These properties have been associated with the high content of anthocyanins in E. australis leaves and flowers. The aim of the present research is to optimize an ultrasound-assisted extraction methodology for the recovery of the anthocyanins present in E. australis flowers. For that purpose, a Box Behnken design with response surface methodology was employed, and the influence of four variables at different values was determined: namely, the composition of the extraction solvents (0–50% MeOH in water), the pH level of those solvents (3–7), the extraction temperature (10–70 C), and the sample:solvent ratio (0.5 g:10 mL–0.5 g:20 mL). UHPLC-UV-vis has been employed to quantify the two major anthocyanins detected in the samples. The extraction optimum conditions for 0.5 g samples were: 20 mL of solvent (50% MeOH:H2O) at 5 pH, with a 15 min extraction time at 70 C. A precision study was performed and the intra-day and inter-day relative standard deviations (RSDs) obtained were 3.31% and 3.52%, respectively. The developed methodology has been successfully applied to other Erica species to validate the suitability of the method for anthocyanin extraction.
Subjects
flower anthocyanins; Mediterranean heather; ultrasound-assisted extraction; optimization; Box-Behnken design; HPLC-UV-vis
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  • Artículos Científicos [4821]
  • Articulos Científicos Biología [266]
  • Artículos Científicos IVAGRO [289]
  • Articulos Científicos Quim. Ana. [159]
Atribución 4.0 Internacional
This work is under a Creative Commons License Atribución 4.0 Internacional

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