Ozonation of vine shoots as a source of lignocellulosic phenolic-rich fractions
Ozonation is a barely explored methodology proposed in the present work as an alternative and sustainable method for the valorization of vine shoots’ from two grape varieties (Tempranillo and Verdejo). For this aim, several phenolic-rich fractions have been obtained from the vine shoots via ozonatio...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/338727 |
| Acceso en línea: | http://hdl.handle.net/10261/338727 https://api.elsevier.com/content/abstract/scopus_id/85174859204 |
| Access Level: | acceso abierto |
| Palabra clave: | Antioxidant capacity Lignocellulose Ozonation pH Vine shoots |
| Sumario: | Ozonation is a barely explored methodology proposed in the present work as an alternative and sustainable method for the valorization of vine shoots’ from two grape varieties (Tempranillo and Verdejo). For this aim, several phenolic-rich fractions have been obtained from the vine shoots via ozonation by the modification of two parameters: time (10, 30, and 60 min) and pH (10, 7, and 3). An additional control fraction was obtained for both varieties via a conventional chemical lignin extraction method (acid hydrolysis with NaClO2) for comparison. All fractions were characterized by means of their yield, composition (phenolic (2–14%), monosaccharides (≤ 13%) and ash (majoritarian) contents) and antioxidant capacity (30–129 µmol TE/g fraction). In addition, a semi-quantitative analysis of the fractions was carried out derived from their FT-IR and TGA spectra, showing significant differences between times and specially pHs. These results confirm ozonation as a promising and greener alternative for vine shoots’ valorization and could be extended to other lignocellulosic waste biomass sources for obtaining novel phenolic-rich fractions. Graphical abstract: [Figure not available: see fulltext.] |
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