02123naa a2200241 a 450000100080000000500110000800800410001902400350006010000200009524501730011526000090028852013750029765000260167265000220169865300220172065300130174265300180175565300180177370000180179170000160180970000190182577300370184420639262019-05-06       2016    bl uuuu     u00u1 u    #d7 a10.1007/s11696-016-0066-72DOI1 aSILVA, L. F. da  aVerification of the selectivity of a liquid chromatography method for determination of stilbenes and flavonols in red wines by mass spectrometry.h[electronic resource]  c2016  aQuantification of bioactive phenols, like stilbenes and flavonols (SaF), has been conducted to evaluate the nutraceutical potential of red wines. However, there is still a lack of full validated, fast and accessible liquid chromatography methods offering high selectivity and a simple procedure. We present here the use of a high-resolution mass spectrometer to evaluate the selectivity of a feasible and traditional liquid chromatography technique (HPLC? DAD) to analyze markers of aglycone SaF in red wines. The SaF compounds were tested: trans-resveratrol, trans-eviniferin, quercetin, myricetin, and kaempferol, as well as trans-cinnamic acid, one of their precursors. System suitability and validation tests were employed for the selected conditions (octylsilane column, methanol mobile phase, and gradient elution). The validation process ensured the HPLC?DAD method was selective, linear, sensitive, precise, accurate and robust. The method was then applied to red wine samples from the Campanha Gau´cha region, Southern Brazil. The real samples contained different SaF levels, showing that the method is applicable to routine use. Furthermore, this was the first SaF characterization of red wines from the Campanha Gau´cha, contributing to regional and product development. Keywords Bioactive phenols Red wine Liquid chromatography Mass spectrometry Validation  aLiquid chromatography  aMass spectrometry  aBioactive phenols  aRed wine  aValidation Ab  aVinhos tintos1 aGUERRA, C. C.1 aFORESTI, A.1 aBERGOLD, A. M.  tChemical Papers, [online], 2016.