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Synthesis and characterization of nontoxic chitosan-coated Fe3O4 particles for patulin adsorption in a juice-pH simulation aqueous

Luo, Ying, Zhou, Zhengkun, Yue, Tianli
Food chemistry 2017 v.221 pp. 317-323
Fourier transform infrared spectroscopy, acute toxicity, adsorbents, adsorption, chitosan, cytotoxicity, emulsifiers, emulsions, fruit juices, histopathology, iron oxides, juice industry, magnetism, mice, octoxynol, patulin, transmission electron microscopy
Chitosan-coated Fe3O4 particles were prepared as a magnetic adsorbent by reverse oil-in-water micro-emulsion system using Triton X-100 as the emulsifier. Coating chitosan onto the magnetic particles was confirmed by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectra and magnetic measurements. Chitosan-coated Fe3O4 adsorbent was shown to be effective for patulin adsorption with a maximum adsorption capacity of 6.67mg/g within 5h by adding 300μg adsorbents into 10mL 200μg/L patulin aqueous. In addition, the recovery rate of chitosan-coated Fe3O4 adsorbent reached to 99.95% within 60min, showed its excellent recoverable performance. Moreover, in vitro cytotoxicity and acute toxicity evaluation were also conducted, the results suggested that the chitosan-coated Fe3O4 adsorbent was non-cytotoxic, and had no toxic response or histopathological changes on mice. The results of this study demonstrated that chitosan-coated Fe3O4 particles are promising adsorbents for patulin removal in fruit juice industry.