RT Journal Article T1 Citrus peels waste as a source of value-added compounds: Extraction and quantification of bioactive polyphenols T2 Cáscaras de cítricos como fuente de compuestos de valor añadido: extracción y cuantificación de polifenoles bioactivos A1 Gómez Mejía, Esther A1 Rosales Conrado, Noelia A1 León González, María Eugenia De A1 Madrid Albarrán, María Yolanda AB A method combining solid-liquid extraction based on ethanolic aqueous solution, cLC-DAD and chemometrics, was performed to extract and quantify polyphenols from citrus peels. LC-MS/MS was also employed for chemical profiling. The effect of extraction variables on the recovery was examined by experimental factorial design. Data were evaluated using multifactorial-ANOVA, response surface analysis and Principal Component Analysis. trans-Ferulic and p-coumaric antioxidants were found in lower quantities (<1.4 mg·g−1) in all peel extracts. Narangin flavonoid was also identified in all samples, while rutin flavonol was determined in the concentration range of 3.3–4.7 mg·g−1. The most abundant polyphenol in the extracts obtained from all evaluated citrus samples was the flavanone hesperidin (280–673 mg·g−1). Furthermore, peel extracts were evaluated in terms of total polyphenol and flavonoid content, total antioxidant activity and DPPH free radical scavenging. The obtained results suggested that evaluated citrus peel by-products could be reused as a source of polyphenols and transformed into value-added products. PB Elsevier Science Ltd SN 0308-8146 YR 2019 FD 2019 LK https://hdl.handle.net/20.500.14352/92845 UL https://hdl.handle.net/20.500.14352/92845 LA eng NO Gómez-Mejía, E., Rosales-Conrado, N., León-González, M.E., Madrid, Y., Citrus peels waste as a source of value-added compounds: Extraction and quantification of bioactive polyphenols, Food Chemistry 295 (2019) 289-299, doi: https://doi.org/10.1016/j.foodchem.2019.05.136 NO Comunidad de Madrid NO Ministerio de Economía y Competitividad (España) NO Universidad Complutense de Madrid NO European Commission DS Docta Complutense RD 2 oct 2024