All the solutions employed were prepared with deionized water (Milli-Q Merck, Millipore Darmstadt, Hesse, Germany) with a resistivity of 18.2 MΩ cm or greater. All chemicals used were analytical grade and used without further purification. Reagents employed for the pumpkin flower foam-mat elaboration; maltodextrin, hydroxyethyl cellulose, and egg albumin (EA) were purchased from Food Technologies Trading (Estado de Mexico, Mexico), Tween-80 was purchased from J.T. Baker (Phillipsburg, NJ, USA).
Reagents employed for the antioxidant activity assays; 2,2-Diphenyl-1-picrylhydrazyl (DPPH), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), potassium persulfate, 2,4,6-tris-2-piridil-s-triazine (TPTZ), hydrochloric acid, acetic acid, Folin–Ciocalteu reagent, gallic acid, thiobarbituric acid (TBA), 1,1,3,3-tetraethoxypropane (TEP), and methanol (MeOH) were purchased from Sigma Aldrich (St. Louis, MO, USA). ABTS was purchased from Roche Diagnostics (Indianapolis, IN, USA). Trichloroacetic acid (TCA) was purchased from Meyer (Estado de Mexico, Mexico). Iron (II) sulfate, sodium carbonate, and sodium acetate were obtained from J.T. Baker (Phillipsburg, NJ, USA). Ferric (III) chloride was purchased from Merck (Darmstadt, Hesse, Germany).
Reagents employed for the antioxidant activity assays; 2,2-Diphenyl-1-picrylhydrazyl (DPPH), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), potassium persulfate, 2,4,6-tris-2-piridil-s-triazine (TPTZ), hydrochloric acid, acetic acid, Folin–Ciocalteu reagent, gallic acid, thiobarbituric acid (TBA), 1,1,3,3-tetraethoxypropane (TEP), and methanol (MeOH) were purchased from Sigma Aldrich (St. Louis, MO, USA). ABTS was purchased from Roche Diagnostics (Indianapolis, IN, USA). Trichloroacetic acid (TCA) was purchased from Meyer (Estado de Mexico, Mexico). Iron (II) sulfate, sodium carbonate, and sodium acetate were obtained from J.T. Baker (Phillipsburg, NJ, USA). Ferric (III) chloride was purchased from Merck (Darmstadt, Hesse, Germany).