RT Journal Article
T1 Residual brewing yeast as a source of polyphenols: Extraction, identification and quantification by chromatographic and chemometric tools
T2 Levadura de cerveza residual como fuente de polifenoles: extracción, identificación y cuantificación mediante métodos cromatográficos y herramientas quimiométricas
A1 León González, María Eugenia De
A1 Gómez Mejía, Esther
A1 Rosales Conrado, Noelia
A1 Madrid Albarrán, María Yolanda
AB A method combining aqueous extraction, reversed-phase high-performance capillary liquid chromatography with photodiode array detection (cLC-DAD) and chemometric tools, was developed to determine phenolic compounds in residual brewing yeast. The effect of temperature, nature of extraction solvent and method for separation of extract solution were studied to optimize the extraction conditions on the basis of total phenolic content (TPC), total flavonoids content (TFC) and antioxidant capacity. Polyphenols were determined by cLC-DAD. Flavonols as rutin and kaempferol, flavonoids as naringin, phenolic acids as gallic acid and antioxidants as trans-ferulic and p-coumaric acids were found and quantified in the brewing residue. Data were subjected to evaluation using multifactor ANOVA and principal component analysis (PCA), both showing that lyophilization pretreatment affects the content of individual polyphenols and that residual brewing yeast contains higher polyphenol amounts than the liquid beer waste. The obtained results suggest that residual brewing yeast could be a source of polyphenols.
PB Elsevier Sci Ltd
SN 0308-8146
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/92816
UL https://hdl.handle.net/20.500.14352/92816
LA eng
NO León-González, M.E., Gómez-Mejía, E., Rosales-Conrado, N., Madrid-Albarrán, Y., Residual brewing yeast as a source of polyphenols: extraction, identification and quantification by chromatographic and chemometric tools, Food Chemistry 267 (2018) 246-254, doi: https://doi.org/10.1016/j.foodchem.2017.06.141
NO Comunidad de Madrid 
NO Ministerio de Economía y Competitivad (España)
NO European Commission
DS Docta Complutense
RD 6 oct 2024