TY - JOUR T1 - Isolation and HPLC Determination of Phenolic Compounds in Red Grapes JF - American Journal of Enology and Viticulture JO - Am J Enol Vitic. SP - 204 LP - 206 DO - 10.5344/ajev.1990.41.3.204 VL - 41 IS - 3 AU - J. Oszmianski AU - C. Y. Lee Y1 - 1990/01/01 UR - http://www.ajevonline.org/content/41/3/204.abstract N2 - A simple fractionation method was developed to analyze phenolic compounds other than anthocyanins in red grapes using HPLC. The methanol extract of Concord and de Chaunac grapes was passed through a preconditioned C18 SEP-PAK and phenolic compounds other than anthocyanins were selectively fractionated with ethyl acetate. Anthocyanins were eluted with MeOH-HCl and analyzed by a spectrophotometric method. Phenolics other than anthocyanins were analyzed by HPLC. This technique is easy to use and convenient for phenolic analysis in both white and red grapes. ER -