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- Moreno-Arribas, M. Victoria, et al. Show all 8 Authors
- Food analytical methods 2014 v.7 no.4 pp. 844-853
- benzoic acid; caffeic acid; cinnamic acid; feces; gallic acid; humans; hydrochloric acid; intestinal microorganisms; metabolites; phenols; protocatechuic acid; solid phase extraction; syringic acid; volunteers
- ... Solid phase extraction (SPE) methodology has been evaluated as a cleanup strategy prior to the analysis of phenolic metabolites in fecal samples by UPLC–DAD–ESI–TQ MS. Among the sorbents tested, Oasis® HLB led to the higher phenolic standard recoveries. Sample acidification (0.4 M HCl, final concentration) before SPE considerably improved standard recoveries. Values of the process efficiency (CSPE ...