Abstract
A rapid and reliable analysis of toxins is prerequisite for food control and human healthcare. Here we demonstrate a simple and multiplexed assay of aflatoxins using time-of-flight secondary ion mass spectrometry (TOF-SIMS). By simply adsorbing either a single analyte or mixed ones onto a gold substrate, the corresponding secondary molecular ions([M+H]+) were clearly observed in a single mass spectrum. As a result of concentration-dependent peak intensity, quantitative and multiplexed analysis of different aflatoxin analogs from corns was accomplished with immunoaffinity column and TOF-SIMS analysis, which showed a good correlation with HPLC data. The detection sensitivity was estimated to be as low as 10 ng mL−1. This approach presented here will find a wide application to detection of low-levels of toxins in a rapid and multiplexed way.
Similar content being viewed by others
References
Cole, R.J. & Cox, R.H. Handbook of toxic fungal metabolites. Acedemic Press, New York (1981).
Bennett, J.W. & Klich, M. Mycotoxins. Clin. Microbial. Rev. 16, 497–516 (2003).
Eaton, D.L. & Groopman, J.D. The Toxicology of Aflatoxins. Academic Press, New York (1994).
Hoeltz, M., Welke, J.E., Noll, I.B. & Dottori, H.A. Photometric procedure for quantitative analysis of aflatoxin B1 in peanuts by thin-layer chromatography using charge coupled device detector. Quimica Nova 33, 43–47 (2010).
Buttinger, G. Aflatoxin measurements: how HPLC methods have evolved over the last 20 years? Food Addit. Contam. Part A Chem. Anal. Control Expo. Risk Assess. 27, 1266–1272 (2010).
Goda, Y., Akiyama, H., Otsuki, T., Fujii, A. & Toyoda, M. Application and improvement of aflatoxin analysis in foods using a multifunctional column and HPLC. J. Food Hyg. Soc. Jap. 42, 56–62 (2001).
Lupo, A., Roebuck, C., Dutcher, M., Kennedy, J. & Abouzied, M. Validation study of a rapid ELISA for detection of aflatoxin in corn. J. AOAC Int. 93, 587–599 (2010).
Radoi, A., Targa, M., Prieto-Simon, B. & Marty, J.L. Enzyme-Linked Immunosorbent Assay (ELISA) based on superparamagnetic nanoparticles for aflatoxin M-1 detection. Talanta 77, 138–143 (2008).
Kolosova, A.Y., Shim, W.B., Yang, Z.Y., Eremin, S.A. & Chung, D.H. Direct competitive ELISA based on a monoclonal antibody for detection of aflatoxin B-1. Stabilization of ELISA kit components and application to grain samples. Anal. Bioanal. Chem. 384, 286–294 (2006).
Catharino, R.R. et al. Aflatoxin screening by MALDITOF mass spectrometry. Anal. Chem. 77, 8155–8157 (2005).
Belu, A.M., Graham, D.J. & Castner, D.G. Time-of-flight secondary ion mass spectrometry: techniques and applications for the characterization of biomaterial surfaces. Biomaterials 24, 3635–3653 (2003).
Pacholski, M.L. & Winograd, N. Imaging with mass spectrometry. Chem. Rev. 99, 2977–3005 (1999).
Reich, F. & Lindley, P.M. Applications of Time-of-Flight Secondary-Ion Mass-Spectrometry (Tof-Sims) to Organic-Surface Analysis. Surf. Biomater. Symposium 92–97 (1993).
Hagenhoff, B. High resolution surface analysis by TOF-SIMS. Microchim. Acta 132, 259–271 (2000).
Wagner, M.S., Horbett, T.A. & Castner, D.G. Characterization of the structure of binary and ternary adsorbed protein films using electron spectroscopy for chemical analysis, time-of-flight secondary ion mass spectrometry, and radiolabeling. Langmuir 19, 1708–1715 (2003).
Kim, Y.P. et al. Quantitative analysis of surface-immobilized protein by TOF-SIMS: Effects of protein orientation and trehalose additive. Anal. Chem. 79, 1377–1385 (2007).
Kim, Y.P. et al. Quantitative ToF-SIMS study of surface-immobilized streptavidin. Appl. Surf. Sci. 252, 6801–6804 (2006).
Min, H., Yu, H., Son, M., Moon, D.W. & Lee, T.G. Quantitative analysis of the surface composition of mixed self-assembled monolayers using ToF-SIMS and FT-IR analyses. Surf. Interface Anal. 43, 397–401 (2011).
Abel, M.L. & Watts, J.F. Examination of the interface of a model adhesive joint by surface analysis: a study by XPS and ToF-SIMS. Surf. Interface Anal. 41, 508–516 (2009).
Tanaka, H., Takino, M., Sugita-Konishi, Y. & Tanaka, T. Development of a liquid chromatography/time-offlight mass spectrometric method for the simultaneous determination of trichothecenes, zearalenone and aflatoxins in foodstuffs. Rapid Commun. Mass Spectrom. 20, 1422–1428 (2006).
Owino, J.H.O. et al. Modelling of the impedimetric responses of an aflatoxin B-1 immunosensor prepared on an electrosynthetic polyaniline platform. Anal. Bioanal. Chem. 388, 1069–1074 (2007).
Saha, D., Acharya, D., Roy, D. & Dhar, T.K. Filtration-based tyramide amplification technique-a new simple approach for rapid detection of aflatoxin B-1. Anal. Bioanal. Chem. 387, 1121–1130 (2007).
Garcia-Villanova, R.J., Cordon, C., Paramas, A.M.G., Aparicio, P. & Rosales, M.E.G. Simultaneous immunoaffinity column cleanup and HPLC analysis of aflatoxins and ochratoxin A in Spanish bee pollen. J. Agric. Food Chem. 52, 7235–7239 (2004).
Sapsford, K.E. et al. Indirect competitive immunoassay for detection of aflatoxin B-1 in corn and nut products using the array biosensor. Biosens. Bioelectron. 21, 2298–2305 (2006).
Goryacheva, I.Y., Karagusheva, M.A., Van Peteghem, C., Sibanda, L. & De Saeger, S. Immunoaffinity preconcentration combined with on-column visual detection as a tool for rapid aflatoxin M1 screening in milk. Food Control 20, 802–806 (2009).
Kim, Y.P. et al. Gold nanoparticle-enhanced secondary ion mass spectrometry imaging of peptides on self-assembled monolayers. Anal. Chem. 78, 1913–1920 (2006).
Kim, Y.P. et al. Protein kinase assay on peptide-conjugated gold nanoparticles by using secondary-ion mass spectrometric imaging. Angew. Chem. Int. Ed. 46, 6816–6819 (2007).
Author information
Authors and Affiliations
Corresponding authors
Additional information
These authors contributed equally to this work.
Rights and permissions
About this article
Cite this article
Ahn, JH., Jeong, YS., Lee, T.G. et al. Sensitive and multiplexed analysis of aflatoxins using time-of-flight secondary ion mass spectrometry. BioChip J 6, 34–40 (2012). https://doi.org/10.1007/s13206-012-6105-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13206-012-6105-8