Cellulose nanofibers coated with silver nanoparticles as a flexible nanocomposite for measurement of flusilazole residues in Oolong tea by surface-enhanced Raman spectroscopy.
Cellulose nanofibers (CNF) coated with inorganic nanoparticles are novel hybrid nanocomposites that have great potential in various areas including agriculture and food science. The objectives of this study were to synthesize nanocomposites consisted of CNF coated with silver nanoparticles (AgNPs), which can be used as a surface-enhanced Raman spectroscopy (SERS) platform for measuring pesticides in Oolong tea. CNF were coated with AgNPs to form uniform CNF-AgNP nanocomposites that were investigated by transmission electron microscopy. Three-dimensional and porous CNF structures were loaded with AgNPs with an average size of 41 nm. CNF-AgNP substrates were applied in characterization and measurement of flusilazole in Oolong tea samples by SERS. A detection limit of 0.5 mg/kg for flusilazole was obtained based on partial least squares (PLS) regression analysis. These results indicate that CNF-AgNP nanocomposites combined with SERS is an accurate, sensitive, and efficient technique for identification and quantification of pesticide residues in Oolong tea.
['Chen|Xi|X|', 'Lin|Hetong|H|', 'Xu|Taotao|T|', 'Lai|Keqiang|K|', 'Han|Xue|X|', 'Lin|Mengshi|M|']
D002482:Cellulose D057230:Limit of Detection D053768:Metal Nanoparticles D053761:Nanocomposites D057139:Nanofibers D012821:Silanes D012834:Silver D013059:Spectrum Analysis, Raman D013499:Surface Properties D013662:Tea D014230:Triazoles
Cellulose nanofiber Silver nanoparticles Flusilazole Oolong tea Hybrid nanocomposites Surface-enhanced Raman spectroscopy (SERS)