PT - JOURNAL ARTICLE AU - Marie-hélène Salagoity-Auguste AU - Christian Tricard AU - Frédéric Marsal AU - Pierre Sudraud TI - Preliminary Investigation for the Differentiation of Enological Tannins According to Botanical Origin: Determination of Gallic Acid and Its Derivatives AID - 10.5344/ajev.1986.37.4.301 DP - 1986 Jan 01 TA - American Journal of Enology and Viticulture PG - 301--303 VI - 37 IP - 4 4099 - http://www.ajevonline.org/content/37/4/301.short 4100 - http://www.ajevonline.org/content/37/4/301.full SO - Am J Enol Vitic.1986 Jan 01; 37 AB - Gallic, digallic, trigallic, and ellagic acids were extracted from different commercial tannins by ethyl acetate and separated by high performance liquid chromatography on hydrocarbon-bonded reverse phase packings. The distribution of the different gallic compounds in the tannins under analysis is a characteristic of their botanical origins: oak wood, chestnut wood, quebracho wood, gallnuts, and myrobolan fruits.