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Reference type: Journal
Authors: Feng LZ, Kan BH, Zhao KY, Wei JF, Zhu DW, Zhang LH
Article Title: Preparation and characterization of protein molecularly imprinted polysiloxane using mesoporous calcium silicate as matrix by sol-gel technology.
Publication date: 2014
Journal: Journal of Sol-Gel Science and Technology
Volume: 71
Issue: (3)
Page numbers: 428-436.
DOI: 10.1007/s10971-014-3396-3

Abstract: Calcium silicate particles containing mesoporous SiO2 on the surface (CaSiO3@SiO2) were prepared by acid modification of calcium silicate with diluted hydrochloric acid. Bovine serum albumin (BSA) molecularly imprinted polysiloxane (MIP) was synthesized using silane as the functional monomer, BSA as the template and CaSiO3@SiO2 particles as the matrix in an aqueous phase. SEM, granulometry, FT-IR and BET analysis were used to characterize the protein MIP. Influence factors on the rebinding capacity of the MIP were investigated, such as the pH in treating CaSiO3, eluent type and silane proportion. The mass of BSA loading and rebinding on CaSiO3@SiO2 and MIP was investigated. The adsorption and recognition properties of the MIP were evaluated and the results showed that the MIP exhibited an obvious improvement in terms of rebinding capacity for BSA as compared with non-imprinted polysiloxane (NIP). BSA imprinted polysiloxane could recognize the template protein by using Lys, Ova, Hb, and Glo as control proteins, and the selectivity factor (β) was above 2.3. The rebinding capacity of BSA imprinted polysiloxane for BSA reached 81.31 mg/g, which was 2.25 times of NIP
Template and target information: protein, bovine serum albumin, BSA
Author keywords: molecular imprinting, Calcium silicate, sol-gel, polysiloxane, Bovine serum albumin, adsorption


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