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Rapid detection and identification of fungi in grain crops using colloidal Au nanoparticles based on surface-enhanced Raman scattering and multivariate statistical analysis

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Abstract

Grain crops are easily contaminated by fungi due to the existence of various microorganisms in the storage process, especially in humid and warm storage conditions. Compared with conventional methods, surface-enhanced Raman scattering (SERS) has paved the way for the detection of fungi in grain crops as it is a rapid, nondestructive, and sensitive analytical method. In this work, Aspergillus niger, Saccharomyces cerevisiae, Fusarium moniliforme and Trichoderma viride in grain crops were detected using colloidal Au nanoparticles and SERS. The results indicated that different fungi showed different Raman phenotypes, which could be easily characterized by SERS. Combined with multivariate statistical analysis, identification of a variety of fungi could be accomplished rapidly and accurately. This research can be applied for the rapid detection of fungi in the food and biomedical industries.

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Acknowledgements

We sincerely thank Yanjing beer company of Beijing (China) for kindly providing Aspergillus niger, Saccharomyces cerevisiae, Fusarium moniliforme and Trichoderma viride.

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The authors have not disclosed any funding.

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Contributions

HW: conceptualization, data curation, formal analysis, supervision, writing – review and editing; ML: writing—original draft, formal analysis; HZ: investigation; XR: investigation, methodology, formal analysis; TL: validation; PZ: methodology, validation; DZ: resources, writing—review and editing.

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Correspondence to Huiqin Wang.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Wang, H., Liu, M., Zhao, H. et al. Rapid detection and identification of fungi in grain crops using colloidal Au nanoparticles based on surface-enhanced Raman scattering and multivariate statistical analysis. World J Microbiol Biotechnol 39, 26 (2023). https://doi.org/10.1007/s11274-022-03467-2

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  • DOI: https://doi.org/10.1007/s11274-022-03467-2

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