Open Access Research Paper Views (867) South Khorasan Province, Iran the largest producer of Berberis vulgaris in the World: investigation of tannin content in the fruit Zahra Moodi, Ghodsieh Bagherzade J. Biodiv. & Environ. Sci. 7(6), 285-292, December 2015. Keywords: Alkaloids, Barberry, Berberine, Berberis vulgaris, Tannins Details