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Food Analytical Methods

, Volume 12, Issue 11, pp 2623–2629 | Cite as

New Method for the Discrimination of Adulterated Flaxseed Oil Using Dielectric Spectroscopy

  • Lingyan Zhang
  • Jia Chen
  • Bingyu Jing
  • Yaoyao Dong
  • Xiuzhu YuEmail author
Article
  • 73 Downloads

Abstract

To develop a new and rapid qualitative and quantitative analysis of flaxseed oil adulteration with different vegetable oils, we investigated the dielectric spectroscopy coupled with multivariate methodology in the frequency range between 10 and 3000 MHz. Linear discriminant analysis was used to distinguish flaxseed oil from other adulterants based on dielectric spectra, and the oil samples were easily grouped in different clusters. The partial least square model was developed for the quantification of the sample adulteration percentage independent from the adulterating oil, which showed a good prediction capability for the adulterant concentrations. The calibration provided a correlation coefficient (R-value) of 0.9961, and the blind sample validation indicated that the R-value of the validation and precision analyses was close to 1. Analysis was characterized as having good precision by slightly low relative standard deviation. Thus, dielectric spectroscopy could be effectively used to discriminate adulterated flaxseed oil from different types of oils at 2% levels.

Keywords

Flaxseed oil Dielectric spectroscopy Adulteration PLS 

Notes

Funding

Funding was provided by the National Natural Science Foundation of China (No. 31671819).

Compliance with Ethical Standards

Conflict of Interest

Lingyan Zhang, Jia Chen, Bingyu Jing, Yaoyao Dong, Xiuzhu Yu declare that they have no conflict of interest.

Ethical Approval

This article does not contain any studies with human or animal subjects.

Informed Consent

Not applicable.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Food Science and EngineeringNorthwest A&F UniversityYanglingPeople’s Republic of China

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