n.1.(Chem.) A white, crystalline, bitter substance. See Calumbin.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
One evening he tied two cats together by their hind legs with a string about six feet in length, and threw them from the wall into the midst of that noble, that princely, that royal bed, which contained not only the "Cornelius de Witt," but also the "Beauty of Brabant," milk-white, edged with purple and pink, the "Marble of Rotterdam," colour of flax, blossoms feathered red and flesh colour, the "Wonder of Haarlem," the "Colombin obscur," and the "Columbin clair terni."
Mohamed Elhassan Taha et al., "In vitro and in vivo anti-inflammatory activities of columbin through the inhibition of cycloxygenase-2 and nitric oxide but not the suppression of NF-[kappa]B translocation," European Journal of Pharmacology, vol.
The results are different to those reported by (Ahmed et al., 2006) who reported four compounds i.e 20 beta hydroxyecdysone, tinosporoside, cordioside and columbin at Rt 19.872 min, 22.443 min, 24.213 min and 27.67 min respectively in the reverse phase HPLC-UV-diode array detection method of ethanolic extract of T cardifolia, Tinospora malabrica and Tinospora crispa but in line with those reported by (Sivakumar and Ranjan, 2011) who identified and quantified Berberine from methanolic stem extract of T.