Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Investigation of Molecular Compounds in Kumquat (Fortunella spp.) Peel via Raman Spectroscopy

Version 1 : Received: 18 January 2024 / Approved: 19 January 2024 / Online: 19 January 2024 (14:41:08 CET)

How to cite: Yildirim, H.; Tulum, I.; Erol, A.; Sarcan, F. Investigation of Molecular Compounds in Kumquat (Fortunella spp.) Peel via Raman Spectroscopy. Preprints 2024, 2024011477. https://doi.org/10.20944/preprints202401.1477.v1 Yildirim, H.; Tulum, I.; Erol, A.; Sarcan, F. Investigation of Molecular Compounds in Kumquat (Fortunella spp.) Peel via Raman Spectroscopy. Preprints 2024, 2024011477. https://doi.org/10.20944/preprints202401.1477.v1

Abstract

In this study, Raman spectroscopy is employed to investigate the chemical compounds of kumquat peels and compared that of orange. Kumquat is a citrus fruit belonging to the genus Fortunella in family Rutaceae. It is observed that kumquat peel has 3 main Raman active characteristic vibration modes specified to carotenoids, which is dominated by β-carotene at 1007, 1158 and 1526 cm-1, as it is well known for orange. The carotenoid distribution within the cross-section of kumquat is also investigated. The carotenoid-related Raman vibration modes are relatively stronger on the peel of kumquat, which is an important finding especially for the fruits that can be eaten with its peel. Our results pave the way to take an attention for the importance of kumquat as being a fruit that can be grown up in different climates compared to orange, which grow in warm climates.

Keywords

Kumquat; citrus peels; functional components; Raman spectroscopy; spectral mapping; carotenoid

Subject

Biology and Life Sciences, Food Science and Technology

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