Curcumin with 98% purity was purchased from Acros Orangnics
(New Jersey, USA). Soluble starch (CAS: 9005-84-9) and ethanol
were obtained from Duksan Pure Chemicals (Kyungki-do, Korea).
Distilled water was produced from a Milli-Q system of Millipore
(Milford, MA, USA). DPPH (1,1-di-phenyl-2-picrylhydrazyl) and
ABTS (2,20-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid))
were acquired from SigmaeAldrich (Missouri, USA). All other reagents
and solvents were of analytical grade and used as received