Colorimetric immunoassay for rapid detection of Staphylococcus aureus based on etching-enhanced peroxidase-like catalytic activity of gold nanoparticles

References

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title
DOI
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660Colorimetric immunoassay for rapid detection of Staphylococcus aureus based on etching-enhanced peroxidase-like catalytic activity of gold nanoparticleshttps://doi.org/10.1007/s00604-020-04473-7CompositeA novel colorimetric immunoassay for the detection of Staphylococcus aureus (S. aureus) based on a combination of immunomagnetic separation and signal amplification via etching-enhanced peroxidase-like catalytic activity of gold nanoparticles (AuNPs) was developed.

Materials

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material
size
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size type
size comment
BET
b nanozyme
b 10n
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specific act
sa 10n
sa unit
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660Fe3O4/Au NPs20.370.58nmTEMThe particle size of a single particle increases from 8.3 ± 0.25 nm (Fig. S2a) to 20.37 ± 0.58 nm.

Kinetics

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substrate
pH
T
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km unit
vmax
vmax err
vmax 10n
vmax unit
kcat
kcat err
kcat 10n
kcat unit
kcat/km
kcat/km 10n
kcat/km unit
comment
660Fe3O4/Au NPsPOD660

Applications

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material
application
target
method
linear range
linear ran unit
LOD
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recovery
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660Fe3O4/Au NPsdetection of Staphylococcus aureusS. aureusColor10 ~ 1000000cfu/mL10cfu/mL