Raman spectroscopy as a tool for characterisation of quality parameters in Norwegian grown apples during ripening.

Autor: Monago-Maraña O; Department of Analytical Sciences, Faculty of Science, Universidad Nacional de Educación a Distancia (UNED), Avda. Esparta s/n, Crta. de Las Rozas-Madrid, 28232, Las Rozas, Madrid, Spain; Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture Research, Muninbakken 9-13, Breivika, Postboks 6122 Langnes, NO-9291 Tromsø, Norway. Electronic address: olgamonago@ccia.uned.es., Wold JP; Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture Research, Muninbakken 9-13, Breivika, Postboks 6122 Langnes, NO-9291 Tromsø, Norway., Remberg SF; Faculty of Biosciences, Department of Plant Sciences, Norwegian University of Life Sciences, PO-BOX 5003, 1432 Ås, Norway., Sanden KW; Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture Research, Muninbakken 9-13, Breivika, Postboks 6122 Langnes, NO-9291 Tromsø, Norway., Afseth NK; Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture Research, Muninbakken 9-13, Breivika, Postboks 6122 Langnes, NO-9291 Tromsø, Norway.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2024 Dec 15; Vol. 323, pp. 124903. Date of Electronic Publication: 2024 Jul 30.
DOI: 10.1016/j.saa.2024.124903
Abstrakt: This study shows for the first time the feasibility of Raman spectroscopy as a non-destructive method to follow the ripening process of apple fruits. Two different varieties of apples were studied: 'Aroma' and 'Elstar'. By visual inspection, Raman spectra showed that the starch content was higher in 'Elstar' apples compared to 'Aroma'. The degradation of starch over time could be detected in the Raman spectra, indicating that the method can be used to monitor the ripening process. The ripeness markers starch index, soluble solids content (SSC), and the sugars glucose, fructose and sucrose were determined with traditional destructive methods. Cross validated calibration models based on Raman spectroscopy were obtained for all quality parameters, and test set validation offered good results, with R 2 in the range 0.4-0.86 for 'Aroma' and 0.4-0.95 for 'Elstar', respectively. The regression coefficients showed that the calibrations relied on Raman bands associated with starch and different sugars. The results suggest that Raman spectroscopy in the future could be used to determine the optimal time of harvesting and to sort apples into different degrees of ripeness.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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