Effect of Structure Factor of Dextran-graft-Polyacrylamide Brush Copolymers on Flocculation Process Parameters

Enhanced Water Dispersibility of Coenzyme Q10 by Complexation with Albumin Hydrolysate

“…Therefore, Q10-Pep is present as a colloidal material with wide particle size distributions. Here, the absorbance at 555 nm, a measure of the turbidity, is an index of the presence of Q10-Pep containing CoQ 10 . ,, On the other hand, the absorption at 280 nm, which mainly originates from tryptophan residues, is an indication of the quantity of peptides present. Table summarizes the average particle size from DLS and absorbances at 555 and 280 nm by UV–vis for the fractions of Q10-Pep.…”

“…Here, the absorbance at 555 nm, a measure of the turbidity, is an index of the presence of Q10-Pep containing CoQ 10 . 33,38,39 On the other hand, the absorption at 280 nm, which mainly originates from tryptophan residues, is an indication of the quantity of peptides present.…”

“…To evaluate the water dispersibility of Q10-Pep, 5 mg of each sample was added to 5 mL of 10 mM aqueous phosphate buffer solution (pH 8.0). The aqueous mixture was swirled with a vortex mixer at room temperature for 15 s. After filtration of the aqueous mixtures through a ⦶ 0.80 μm membrane filter, the turbidity of the filtrate was monitored by the absorbance at 555 nm using a UV–vis spectrophotometer (JASCO V-660, Tokyo, Japan) …”

“…The aqueous mixture was swirled with a vortex mixer at room temperature for 15 s. After filtration of the aqueous mixtures through a ⦶ 0.80 μm membrane filter, the turbidity of the filtrate was monitored by the absorbance at 555 nm using a UV−vis spectrophotometer (JASCO V-660, Tokyo, Japan). 33 Effect of the Mass Ratio between Pep and CoQ 10 . Six solutions of CoQ 10 were prepared by dissolving CoQ 10 (21.6 mg, 10 mM) in acetone (2.5 mL).…”