The use of derivatives and chemometrics to interrogate the UV-Visible spectra of gin samples to monitor changes related to storage

Nivetha Govindaraj; Sheeana Gangadoo; Vi Khanh Truong; James Chapman; Harsharn Gill; Daniel Cozzolino

doi:10.1016/j.saa.2019.117548

The use of derivatives and chemometrics to interrogate the UV-Visible spectra of gin samples to monitor changes related to storage

Spectrochim Acta A Mol Biomol Spectrosc. 2020 Feb 15:227:117548. doi: 10.1016/j.saa.2019.117548. Epub 2019 Oct 23.

Authors

Nivetha Govindaraj¹, Sheeana Gangadoo¹, Vi Khanh Truong¹, James Chapman¹, Harsharn Gill¹, Daniel Cozzolino²

Affiliations

¹ School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia.
² School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia. Electronic address: daniel.cozzolino@rmit.edu.au.

PMID: 31672378
DOI: 10.1016/j.saa.2019.117548

Abstract

Extensive research has been carried out to study and characterise different properties of alcoholic beverages using spectroscopy methods. Although UV-VIS spectroscopy is being used for the routine analysis of several beverages and foods, it has not been extensively used as a high throughput method. The objective of this study was to evaluate the application of derivatives to interrogate the UV-VIS spectra of gin samples to monitor changes related with storage conditions. Samples were analysed using an UV-VIS (200-800 nm) spectrophotometer with 1 cm path length. The raw spectra, second, third and fourth derivatives were used to analyse and interpret the UV-VIS spectra related to storage conditions. The results of this study indicated that the use of derivatives (third and fourth) as pre-process method to the UV-VIS spectra of gin samples allowed for a better identification of wavelengths as well as interpretation of the spectra associated with the different storage conditions.

Keywords: Derivatives; Gin; Oxidation; Quality; UV-VIS.

MeSH terms

Alcoholic Beverages / analysis*
Oxidation-Reduction
Principal Component Analysis
Software
Spectrophotometry, Ultraviolet / methods