PT - JOURNAL ARTICLE AU - Oszmianski, J. AU - Lee, C. Y. TI - Isolation and HPLC Determination of Phenolic Compounds in Red Grapes AID - 10.5344/ajev.1990.41.3.204 DP - 1990 Jan 01 TA - American Journal of Enology and Viticulture PG - 204--206 VI - 41 IP - 3 4099 - http://www.ajevonline.org/content/41/3/204.short 4100 - http://www.ajevonline.org/content/41/3/204.full SO - Am J Enol Vitic.1990 Jan 01; 41 AB - 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.