Skip to main content
Log in

A Gold Nanorods Etching Based Colorimetric Sensor Array for the Detection of Reducing Substances and Discrimination of Chinese Baijiu

  • Published:
Food Analytical Methods Aims and scope Submit manuscript

Abstract

Baijiu brings huge economic effects for Chinese light industry and needs to be effectively discriminated. Reducing substances are considered as the evaluation index of Baijiu quality and health efficacy. A new reducing substances evaluation-based method for Baijiu detection is feasible and urgent. Herein, we report a colorimetric sensor array based on gold nanorods (Au NRs), which relies on reducing substances in Baijiu to slow down the etching of the edges of Au NRs by oxides to discriminate reducing substances and Baijiu. The ΔRed-Green–Blue (RGB) values of the morphology changes of the Au NRs with four particle sizes were captured for subsequent deep pattern recognition and fingerprinting construction. There is a good linear relationship between Euclidean distance and ethyl hexanoate concentration in the range of 20–1200 μM (R2 = 0.976), with a detection limit down to 20 μM. Because of great qualitative and quantitative capabilities for typical reducing substances, 16 brands of Baijiu were accurately discriminated with the high blind sample test accuracy rate (90.6%). What’s more, provided sensor array exhibits considerable selectivity in Baijiu samples and non-Baijiu samples, which indicated this method may have pleasing universality and practicability.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Schematic 1
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Data Availability

Not applicable.

Code Availability

Not applicable.

References

Download references

Acknowledgements

This work was supported by the National Natural Science Foundation of China (NO. 31171684), The State Administration for Market Regulation Science and Technology Projects (2021MK093), Key Laboratory of Wuliangye-flavor Liquor Solid-state Fermentation, China National Light Industry (2021JJ001), Key Laboratory of Brewing Molecular Engineering of China Light Industry (BME-202108), Brew Microorganisms Technology and Applica-tion of Key Laboratory Project in Sichuan Province (NJ2020-03), Science and technology research program of Chongqing Education Commission of Chin (KJCXZD2020006), Chongqing Graduate Tutor Team Construction Project, Analytical and Testing Center of Chongqing University for TEM characterization and the sharing fund of Chongqing Universityʼs large equipment.

Author information

Authors and Affiliations

Authors

Contributions

This manuscript was written through contributions of all authors listed. All authors have given approval to the final version of the manuscript.

Corresponding authors

Correspondence to Yi Ma, Danqun Huo or Changjun Hou.

Ethics declarations

Ethical Approval

This article does not contain any studies with humans or animals.

Informed Consent

Not applicable.

Competing Interests

The authors declare no competing interests.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 583 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Li, J., Liu, X., Luo, H. et al. A Gold Nanorods Etching Based Colorimetric Sensor Array for the Detection of Reducing Substances and Discrimination of Chinese Baijiu. Food Anal. Methods 15, 2605–2614 (2022). https://doi.org/10.1007/s12161-022-02269-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12161-022-02269-4

Keywords

Navigation