Sustainable Hues: Exploring the Molecular Palette of Biowaste Dyes through LC-MS Metabolomics
Underutilized biowaste materials are investigated for their potential as sustainable textile colorants through an approach based on mass spectrometry, bioinformatics, and chemometrics. In this study, colorful decoctions were prepared from the outer bark of <i>Eucalyptus deglupta</i> and...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/1255c782db504320ad7ef539e2716087 |
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| Sumario: | Underutilized biowaste materials are investigated for their potential as sustainable textile colorants through an approach based on mass spectrometry, bioinformatics, and chemometrics. In this study, colorful decoctions were prepared from the outer bark of <i>Eucalyptus deglupta</i> and fruit peels of <i>Syzygium samarangense, Syzygium malaccense, Diospyros discolor</i>, and <i>Dillenia philippinensis.</i> Textile dyeing was performed along with liquid chromatography–mass spectrometry (LC–MS)-based untargeted metabolomics to determine the small molecules responsible for the observed colors. Global Natural Products Social Molecular Networking (GNPS) guided the annotation of black-producing proanthocyanidins in <i>D. philippinensis</i> and <i>E. deglupta</i> through complexation with FeSO<sub>4</sub> mordant. Flavonoids from the yellow-colored <i>D. philippinensis</i> extracts were found to be similar to those in <i>Terminalia catappa</i>, a known traditional dye source. A higher intensity of epicatechin in <i>E. deglupta</i> produced a red-brown color in the presence of Cu<sup>2+</sup>. Furthermore, <i>Syzygium</i> fruit peels have poor wash-fastness in cotton fibers, but bioactive chalcone unique to <i>S. samarangense</i> samples may be a potential nutritional food colorant. Unsupervised PCA and supervised OPLS-DA chemometrics distinguished chemical features that affect dyeing properties beyond the observed color. These findings, along with growing data on natural dyes, could guide future research on sustainable colorants. |
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