CQUniversity
Browse

Detection of eucalyptus oil adulteration in Australian tea tree oil using UV–Vis and fluorescence spectroscopy

Download (1.44 MB)
journal contribution
posted on 2024-07-24, 00:12 authored by Joel JohnsonJoel Johnson, Parbat Raj ThaniParbat Raj Thani, Mani NaikerMani Naiker
Pure Australian tea tree oil is a high-value commodity; however, cheaper tea tree oils are often adulterated with other substances such as eucalyptus oil. Detection of adulteration typically requires time-consuming analysis with expensive equipment. Consequently, rapid methods of screening for adulteration would be beneficial for the industry. This study examined whether the rapid, non-destructive and low-cost methods of ultraviolet-visible and fluorescence spectroscopy could be used to detect adulteration of tea tree oil with eucalyptus oil. Ultraviolet-visible spectroscopy showed moderate accuracy for predicting adulterant concentration (root mean square error of cross-validation (RMSECV) of 6.8% v/v). Moving window analysis was used to reduce the model wavelength range to just 55 nm, without a loss in predictive accuracy. Fluorescence spectroscopy also performed well, with an RMSECV of 2.9% v/v. Consequently, these techniques may be suitable for rapidly and cheaply screening tea tree oil samples for gross adulteration.

History

Volume

6

Start Page

1

End Page

6

Number of Pages

6

eISSN

2666-8319

ISSN

2666-8319

Publisher

Elsevier BV

Additional Rights

CC BY-NC-ND 4.0

Language

en

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2022-11-16

Author Research Institute

  • Institute for Future Farming Systems

Era Eligible

  • Yes

Journal

Talanta Open

Article Number

100169

Usage metrics

    CQUniversity

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC