A novel aptamer-AuNP-conjugated carboxymethyl chitosan-functionalized graphene oxide (CMC/GO@Apt-Au NP) probe was for the first time developed for the determination of Salmonella typhimurium (S. typhimurium). Owing to the conformational change of the aptamers in the presence of S.
View Article and Find Full Text PDFA regenerable ion-imprinted magnetic biocomposite (IIMB) was successfully synthesized for simultaneous removal of Pb using Serratia marcescens and carboxymethyl chitosan (CMC) as functional carriers, Pb was utilized as the imprinted ion, while FeO served as the magnetic component. The structure and properties of IIMB were characterized by various techniques. The adsorption kinetics, isotherms and thermodynamics were applied to interpret the Pb adsorption process on IIMB.
View Article and Find Full Text PDFThe activities and transmissions of microorganisms are closely related to human, and all kinds of diseases caused by pathogenic microorganisms have attracted attention in the world and brought many challenges to human health and public health. The traditional microbial detection technologies have characteristics of longer detection cycle and complicated processes, therefore, which can no longer meet the detection requirements in the field of public health. At present, it is the focus to develop and design a novel, rapid, and simple microbial detection method in the field of public health.
View Article and Find Full Text PDFAdsorbent FeO/chitosan was successfully synthesized for the removal of microcystin-LR and characterized by Scanning electron microscope, Fourier transform infra-red, thermogravimetric analysis and vibrating sample magnetometer. The effects of reaction conditions, including pH, temperature and ratio of FeO to chitosan on microcystin-LR adsorption capacity were investigated by the Box-Behnken response surface methodology design, and the optimal adsorption conditions were determined. The adsorption properties of microcystin-LR were examined by adsorption kinetics, isothermal and thermodynamics experiments.
View Article and Find Full Text PDFAn aptamer-based assay is described for the determination of Salmonella typhimurium (S. typh). Carboxymethyl chitosan was loaded with amino-modified aptamer against S.
View Article and Find Full Text PDFIt is vital to understand the adsorption mechanisms and identify the adsorption kinetics when applying an adsorbent to remove heavy metals from aqueous solution. A Pb(II) imprinted magnetic biosorbent (Pb(II)-IMB) was developed for the removal of Pb2+ via lead ion imprinting technology and crosslinking reactions among chitosan (CTS), Serratia marcescens and Fe3O4. The effect of different parameters such as solution pH, adsorbent dosage, selectivity sorption and desorption were investigated on the absorption of lead ion by Pb(II)-IMB.
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