Diversity of Color, Infrared Spectra, and Phenolic Profile Correlation in Citrus Fruit Peels
Citrus waste is a source of phytochemicals with extensive health properties, mainly diglycosylated flavonoids. In this experiment, the characterization of dried peels from three main citrus species, lemon (<i>Citrus limon</i>), orange (<i>Citrus sinensis</i>), and grapefruit...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
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| Series: | Biology and Life Sciences Forum |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-9976/40/1/26 |
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| Summary: | Citrus waste is a source of phytochemicals with extensive health properties, mainly diglycosylated flavonoids. In this experiment, the characterization of dried peels from three main citrus species, lemon (<i>Citrus limon</i>), orange (<i>Citrus sinensis</i>), and grapefruit (<i>Citrus paradisi</i>), was performed using various analytical techniques. The FTIR spectra of each species show the characteristic bands of C=O stretching and O-H stretching and bending, and the PCA shows discrimination between species based on their chemical nature. The TPC determined by UV-vis spectroscopy was found to be higher for grapefruit peel by 12.4% and 38.9% compared to lemon and orange, which coincides with the individual flavonoid content obtained by HPLC-MS/MS. Meanwhile, full-scan HPLC-MS confirmed a wider variety of phytochemicals in lemon peel. |
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| ISSN: | 2673-9976 |