Adsorption Characteristics of Nisin by Magnetic Iron Oxide Nanoparticles Coated with Polydopamine (IONPs@pDA)

doi:10.7506/spkx1002-6630-20190115-169

FOOD SCIENCE ›› 2019, Vol. 40 ›› Issue (15): 43-49.doi: 10.7506/spkx1002-6630-20190115-169

• Basic Research • Previous Articles Next Articles

Adsorption Characteristics of Nisin by Magnetic Iron Oxide Nanoparticles Coated with Polydopamine (IONPs@pDA)

JIANG Feihong, SONG Zihan, NIU Chen, ZHANG Yuxiang, WEI Jianping, YUE Tianli

1. Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, National Engineering Research Center of Agriculture Integration Test (Yangling), College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; 2. College of Food Science and Technology, Northwest University, Xi’an 710000, China

Online:2019-08-15 Published:2019-08-26

Abstract

Abstract: This experiment aimed to systematically investigate the adsorption characteristics of iron oxide nanoparticles coated with polydopamine (IONPs@pDA) toward nisin for the purpose of providing theoretical evidence and data support for the preparation of novel antibacterial nisin-IONPs@pDA composites. The amount of nisin adsorbed by IONPs@pDA was determined as a function of temperature and time. The adsorption kinetics and isotherms were also studied. The results obtained demonstrated that the adsorption behavior obeyed the Lagergren pseudo-second-order kinetic model and the Freundlich isothermal adsorption model, indicating the occurrence of a multilayer chemisorption process. The adsorption process was endothermic and the adsorption of nisin increased with the increase of temperature. Finally, IONPs@pDA were demonstrated to be a potential magnetic material for nisin adsorption.

Key words: iron oxide nanoparticles coated with polydopamine, nisin, adsorption kinetics, adsorption thermodynamics

CLC Number:

TS201.2

JIANG Feihong, SONG Zihan, NIU Chen, ZHANG Yuxiang, WEI Jianping, YUE Tianli. Adsorption Characteristics of Nisin by Magnetic Iron Oxide Nanoparticles Coated with Polydopamine (IONPs@pDA)[J]. FOOD SCIENCE, 2019, 40(15): 43-49.

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Adsorption Characteristics of Nisin by Magnetic Iron Oxide Nanoparticles Coated with Polydopamine (IONPs@pDA)

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