Potassium bichromate k2cr2o7

The 1,1-Diphenyl-2-picrylhydrazyl radical (DPPH), 2,20-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), potassium persulfate (K₂S₂O₈), butylate-hydroxytoluene, phenazine methosulphate, 6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid (Trolox), diclofenac sodium, butylated hydroxytoluene (BHT), 2,2′-Azobis(2-methylpropionamidine) dihydrochloride (AAPH), fluorescein sodium salt, sodium phosphate dibasic (Na₂HPO₄), potassium phosphate monobasic (KH₂PO₄), 2,4,6-Tris(2-pyridyl)-S-triazine (TPTZ), iron sulphate heptahydrate, sodium acetate, sodium carbonate, vanillin, Folin-Ciocalteu reagent, β-carotene, linoleic acid, tween 80, ferrozine, iron (II) chloride, EDTA, fatty free BSA, trypsin, tris-HCl, casein, potassium bichromate (K₂Cr₂O₇) were purchased from Sigma-Aldrich (MSt. Louis, MO, USA). Methanol, acetonitrile, glacial acetic acid and phosphoric acid were HPLC grade and purchased from Merck (Darmstadt, Germany). Reference compounds were HPLC grade and purchased from Extrasynthese (Genay, France).

Starch azure, porcine pancreatic amylase, calcium chloride, acetic acid, hydrochloric acid, acetone, dimethyl sulfoxide (DMSO), dichloromethane (CH₂Cl₂), and potassium bichromate (K₂Cr₂O₇) were purchased from Sigma Aldrich (Milan, Italy).