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Citation: LI Yuanyuan, ZHANG Xin, CHEN Weijie, LIU Hongyang, SUN Liquan, LUO Aiqin. Preparation and adsorption characteristics of lysozyme-imprinted polymer membrane[J]. Chinese Journal of Chromatography, ;2019, 37(4): 392-397. doi: 10.3724/SP.J.1123.2018.10022 shu

Preparation and adsorption characteristics of lysozyme-imprinted polymer membrane

Beijing Institute of Technology, Beijing 100081, China

Received Date: 19 October 2018

In this work, a novel polymer membrane molecularly imprinted on a silanized glass substrate was prepared. Lysozyme was chosen as the template protein, and acrylamide and N,N'-methylenebisacrylamide were used as the functional monomer and crosslinking agent, respectively. The adsorption equilibrium time, maximum adsorption capacity, specific recognition ability, reusability, and application of the prepared lysozyme-imprinted polymer membrane were investigated experimentally. The prepared polymer membrane exhibited special recognition ability and could quickly adsorb lysozyme. Under optimal conditions, the adsorption equilibrium time of the prepared polymer membrane for lysozyme was 5 min, and the adsorption behavior conformed to the Langmuir adsorption model; the theoretical maximum adsorption capacity was 42.5 mg/g, and the adsorption capacity for an egg sample was 30 mg/g. Additionally, the polymer membrane showed a high selectivity toward the template protein, lysozyme, and exhibited no obvious adsorption of several interfering proteins; the imprinting factor was 3.0. The maximum adsorption capacity of the polymer membrane decreased by 5% after being reused five times. The polymer membrane was used for the adsorption of lysozyme in samples, and good results were obtained. This strategy has potential for the separation and enrichment of target proteins in complex biological samples.
- molecular imprinting technique,
- molecularly imprinted polymer membrane,
- lysozyme
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