Table 1.

Control vehicles (C1 to C5 & Ce, % w/w). All are saturated solutions of curcumin except for PEG 400 neat liquid, in which curcumin solubility exceeds 0.5% w/w, see Table 3.

Formulation	PEG 6000	PEG 400	Ethanol	Volpo	Water	Corn Oil
C1	75	------	------	------	25	------
C2	------	100	------	------	------	------
C3	------	30	------	10	60	------
C4	------	------	------	6	94	------
C5	------	------	------	------	------	100
Ce	------	------	60	------	40	------