Microwave-Assisted Extraction of Phenolic Compounds from Almond Skin Byproducts (Prunus amygdalus): A Multivariate Analysis Approach
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Title: | Microwave-Assisted Extraction of Phenolic Compounds from Almond Skin Byproducts (Prunus amygdalus): A Multivariate Analysis Approach |
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Authors: | Valdés, Arantzazu | Vidal, Lorena | Beltrán Sanahuja, Ana | Canals, Antonio | Garrigós, María del Carmen |
Research Group/s: | Análisis de Polímeros y Nanomateriales | Espectroscopía Atómica-Masas y Química Analítica en Condiciones Extremas |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Keywords: | Microwave-assisted extraction | Phenolic compounds | Almond skin | HPLC-DAD-ESI-MS/MS | Antioxidant activity | Linear discriminant analysis |
Knowledge Area: | Química Analítica | Nutrición y Bromatología |
Issue Date: | 25-May-2015 |
Publisher: | American Chemical Society |
Citation: | Journal of Agricultural and Food Chemistry. 2015, 63(22): 5395-5402. doi:10.1021/acs.jafc.5b01011 |
Abstract: | A microwave-assisted extraction (MAE) procedure to isolate phenolic compounds from almond skin byproducts was optimized. A three-level, three-factor Box–Behnken design was used to evaluate the effect of almond skin weight, microwave power, and irradiation time on total phenolic content (TPC) and antioxidant activity (DPPH). Almond skin weight was the most important parameter in the studied responses. The best extraction was achieved using 4 g, 60 s, 100 W, and 60 mL of 70% (v/v) ethanol. TPC, antioxidant activity (DPPH, FRAP), and chemical composition (HPLC-DAD-ESI-MS/MS) were determined by using the optimized method from seven different almond cultivars. Successful discrimination was obtained for all cultivars by using multivariate linear discriminant analysis (LDA), suggesting the influence of cultivar type on polyphenol content and antioxidant activity. The results show the potential of almond skin as a natural source of phenolics and the effectiveness of MAE for the reutilization of these byproducts. |
Sponsor: | We acknowledge the Spanish Ministry of Economy and Competitiveness for financial support (MAT-2011-28468-C02-01). A.V. thanks Conselleria de Educación (Spain) for ACIF/2010/172 Predoctoral Research Training Grant. |
URI: | http://hdl.handle.net/10045/47518 |
ISSN: | 0021-8561 (Print) | 1520-5118 (Online) |
DOI: | 10.1021/acs.jafc.5b01011 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2015 American Chemical Society |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1021/acs.jafc.5b01011 |
Appears in Collections: | INV - NANOBIOPOL - Artículos de Revistas INV - SP-BG - Artículos de Revistas INV - AAQCN - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2015_Valdes_etal_JAFC_final.pdf | Versión final (acceso restringido) | 1,1 MB | Adobe PDF | Open Request a copy |
2015_Valdes_etal_JAFC_accepted.pdf | Accepted Manuscript (acceso abierto) | 437,27 kB | Adobe PDF | Open Preview |
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