Thermal and UV radiation effects on dynamic viscosity of gelatin-based riboflavin solutions

Characterization and Testing of a Novel Sprayable Crosslinked Edible Coating Based on Salmon Gelatin

“…The control samples showed 0% transmittance up to a wavelength of ∼500 nm, indicating that the addition of Rf affects T% in this interval. After the 500 nm, the T% Demirbay et al [57] also found that the viscosity of pure gelatin increased with the addition of riboflavin with UV exposure. They suggested that as the flavin group of riboflavin has a tendency to be involved in oxidation-reduction reactions when stimulated by UV light and the formation of reactive species in the solution enhanced the probability of bond formation among riboflavin and other organic molecules (such as gelatin and dextrin).…”

“…In this work, the maximum values of G' and G" (after gelling) did not change with respect to the control, reflecting that the triple helix formation was not affected by the light exposure suggesting that other elements of the gelatin structure may be involved in the crosslinking. Indeed, it has been described that when flavin moiety of riboflavin is exposed to UV/VL, the reactive species generated in the solution enhanced the probability of bond formation among riboflavin and amine molecules in gelatin, forming volume fractions on the backbone of the entire structure increasing the degree of shear thickening behavior by photo-crosslinking [57]. Additionally, it is well known that the concentration of helical structures are decreased during melting [56,58].…”

“…They suggested that as the flavin group of riboflavin has a tendency to be involved in oxidation-reduction reactions when stimulated by UV light and the formation of reactive species in the solution enhanced the probability of bond formation among riboflavin and other organic molecules (such as gelatin and dextrin). In consequence, the formation of larger chains and groups of molecules on the backbone of the structure may have led to restricting the movement of entire molecule so viscosity of the sample increased after light exposure [57,59].…”

Viscosity–Temperature Relationship of Dextrin–Riboflavin Solutions for Biological Applications

“…Polymers can be used as materials that deliver drugs or renew cells. As it is seen in our earlier study of gelatin-based RF solution, Dextrin (D) and riboflavin (RF) solutions have major impact on medical field such as drug delivery or injuring pad [1].…”

“…Polymers can be used as materials that deliver drugs or renew cells. As it is seen in our earlier study of gelatin-based RF solution, Dextrin (D) and riboflavin (RF) solutions have major impact on medical field such as drug delivery or injuring pad [1].In this research, 10% D and 0.1% RF solutions were chosen due to these percentages are used in medical field generally. In consideration of that, 10% D solution with 0.1% RF content is blended at 50C at 1200 rpm for about 30 minutes after preparation of D and RF solutions separately (10D01RF).…”