... 1985b Studies on curcumin and curcuminoids V Alkaline degradation of curcumin Z Lebensm Unters Forsch 180, 132–134 Tønnesen, H.H., Karlsen, J., van Henegouwen, G.B., 1986 Studies on curcumin and curcuminoids ... occurring curcuminoids and selected derivatives Pharmazie 50, 689–693 Tønnesen, H.H., Karlsen, J., 1985a Studies on Curcumin and Curcuminoids VI Kinetics of curcumin degradation in aqueous solution ... first investigation of the solubility of curcuminoids C-1, C-2, C-3, C-5 and C-6 In contrast, some investigations have been done on the solubility of curcumin (C-4) in CD solutions Baglole et al...