SPECTROPHOTOMETRIC AUTHENTICATION IMAGES OF HOPS ESSENTIAL OILS

Authors

  • Vladislav V. Liubchenko Institute of an agriculture Polissya of the National Academy of Agrarian Sciences of Ukraine, Ukraine
  • Oleksandr P. Steciuk Institute for Agriculture of Polissia National Academy of Agrarian Sciences of Ukraine, Ukraine https://orcid.org/0000-0001-8872-537X
  • Viktor I. Ratoshniuk Institute for Agriculture of Polissia National Academy of Agrarian Sciences of Ukraine, Ukraine https://orcid.org/0000-0001-6937-7541
  • Yuriy M. Ilyinskiy Institute for Agriculture of Polissia National Academy of Agrarian Sciences of Ukraine, Ukraine https://orcid.org/0000-0002-5301-6714
  • Irina O. Pasichnyk Institute for Agriculture of Polissia National Academy of Agrarian Sciences of Ukraine, Ukraine

DOI:

https://doi.org/10.15421/jchemtech.v33i1.311702

Keywords:

essential oil; hops; spectrophotometry; identification; terpenes; quality.

Abstract

Hop essential oils are natural, useful substances enriched with biologically active terpene complex. They possess attractive nutritional and energy-stimulating properties and can positively affect the immune-supporting functions. However, they are at risk of falsification, necessitating the development of competent identification methodologies. This research aimed to create methodological, analytical, and informational bases for hop oils to study the possibility of their identification and control against falsification by spectrophotometry. Essential oils of bitter and aromatic hop types were analyzed. The quality and safety parameters of the oils met regulatory requirements. The optical density spectra of hop oil were evaluated and compared in the light absorption wavelength range from 190 nm to 900 nm. It has been established that the identification spectrophotometric images of optical density, when a light beam is transmitted through hop oil samples, discretely, with a wavelength step of 0.05–1 nm, form peaks of total terpene absorption in the ranges of 350–620 nm. These are the main criteria for the formation of spectrophotometric databases of hop oils. Spectrophotometric images and pilot authentication models were developed for high-quality samples of bitter and aromatic hop oils. These findings contribute to the organoleptic authentication of hop oil spectrograms to prevent falsification.

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Published

2025-04-15

Issue

Vol. 33 No. 1 (2025): Journal of Chemistry and Technologies

Section

Chemical Technology

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