Surface-modification-directed controlled adsorption of serum albumin onto magnetite nanocuboids synthesized in a gel-diffusion technique

Deposition Kinetics of Colloidal Manganese Dioxide onto Representative Surfaces in Aquatic Environments: The Role of Humic Acid and Biomacromolecules

“…This finding was consistent with the previous observation of enhanced colloid deposition by absorbed BSA. − To deepen the understanding of this deposition behavior, the representative values of r f for BSA, MnO 2 colloids, and MnO 2 colloids in the presence of BSA deposited onto the three surfaces at different electrolyte concentrations are presented in Table S4. The values of r f for BSA were obtained, indicating that BSA could be absorbed onto the three surfaces, consistent with results reported before. − However, the simultaneous deposition of BSA was not the origin of the greater depositional behavior of MnO 2 colloids, supported by the higher value of | r f , MnO 2 colloids+BSA | than the value of | r f ,BSA |+| r f , MnO 2 colloids | when IS > 10 mM. We attributed this observed enhancement of MnO 2 colloidal deposition in the presence of BSA to the effects of: (1) the attractive interactions generated fromthe adsorption of BSA on hydrophilic collector surfaces, , and (2) more effective colloid in the deposition system originated from less aggregation due to the high steric repulsion induced by BSA molecules. , Jeyachandran et.al showed that the relatively hydrophilic BSA can strongly adsorbed on hydrophilic collector surfaces (i.e., silica, magnetite and alumina) used in present study. , The absorption of BSA on the surfaces approaching/reaching saturation can generate attractive deposition sites for colloids, and therefore increased the deposition rate.…”

“…Interestingly, the presence of BSA led to lower values of |Δ D (3) /Δ f (3) |, indicating the formation of a rigid deposited layer in the presence of BSA. It was previously reported that BSA had good affinity for the negative silica surface and formed monolayers. − Moreover, BSA has the strongest effect on retarding the aggregation rate of MnO 2 colloids relative HA and alginate, thus leading to enhanced individual deposition of these colloids onto surfaces. Consequently, the strong association of BSA-coated MnO 2 colloids with surfaces might be responsible for the higher rigidity of the deposited layer.…”

Adsorption of folic acid, riboflavin, and ascorbic acid from aqueous samples by Fe3O4magnetic nanoparticles using ionic liquid as modifier

“…Iron oxide has been extensively studied as it has several interesting properties like great chemical stability and biocompatibility. 1,2 Folic acid (pteroylglutamic acid, FA) is a widely distributed vitamin (called vitamin BC, vitamin M, or vitamin B9). It is involved in single-carbon transfer reactions in metabolism, and it is the precursor of the active tetrahydrofolic acid coenzyme.…”

Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption

“…Bovine serum albumin (BSA) is of great importance in pharmacology as the conjugation of certain drugs to albumin decreases their toxicity . The well‐known structural and physical characteristics of BSA help in investigations of protein conformational changes with magnetite surfaces . The ability of polymers to protect proteins from proteolysis and antibody neutralization in vivo in addition to supplying a controlled release vehicle is also known .…”

“…14 The well-known structural and physical characteristics of BSA help in investigations of protein conformational changes with magnetite surfaces. 15 The ability of polymers to protect proteins from proteolysis and antibody neutralization in vivo in addition to supplying a controlled release vehicle is also known. 16,17 Hydrogels can occlude a large amount of water providing an aqueous environment that protects proteins.…”