164
Views
1
CrossRef citations to date
0
Altmetric
Food Analysis

Identification of the Geographic Origin of Peanut Kernels by Raman Spectroscopy Fingerprinting with Chemometrics

, , , , , & ORCID Icon show all
Pages 628-639 | Received 20 Oct 2022, Accepted 30 May 2023, Published online: 08 Jun 2023
 

Abstract

This study aimed to investigate the feasibility of identifying the geographical origin of peanuts by combining Raman spectroscopy with chemometrics. A total of 161 peanut samples were collected from Jilin, Jiangsu, and Shandong provinces in China, and their Raman spectra were collected. One-way analysis of variance (ANOVA) was used to analyze the difference in characteristic Raman spectra of peanuts from these locations. Raman spectroscopy combined with principal component analysis (PCA), k-nearest neighbor (k-NN), stepwise linear discriminant analysis (SLDA), and support vector machines (SVM) were used to classify the peanuts by province and Jilin Province city. One-way ANOVA indicated that the peak intensities at 2900, 1660, 1440, 1077, and 848 cm−1 had significant differences. The peaks at 2900, 1660, 1440, 1300, and 1077 cm−1 had significant differences in the Jilin Province city. The correct identification rates were highest for k-NN. This study demonstrates the identification of the origin of peanuts by Raman spectroscopy with chemometrics and may provide technical support for the traceability of other agricultural products.

Disclosure statement

The authors declare no conflicts of interest.

Additional information

Funding

This work was supported by the Natural Science Foundation of Shandong Province (No. ZR2019BC033) and Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs (No. S2021KFKT-07).

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.