Título:
Hydrothermal extraction of tannins from pine bark: Optimization, characterization and comparison with commercial antioxidants
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Autor:
Pisani, Justina
Xavier, Lucía
Zecchi, Berta
Xavier, Lucía
Zecchi, Berta
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Tipo de documento:
Póster
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Año de publicación:
2025
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Resumen:
Hydrothermal treatment of pine bark was optimized using a Box-Behnken design. Quadratic models for all responses showed good fit (R² > 0.95; p < 0.0001). The optimal conditions were 130 °C, 45 min, solid/liquid ratio 1/20 g/mL, yielding:
• Extraction yield: 13.54 ± 1.30 g/100 g dry bark
• Total phenolics: 30.18 ± 2.11 mg GAE/g dry bark
• FRAP: 13.32 ± 2.80 mmol AAE/100 g dry bark
• Condensed tannins: 6.79 ± 1.57 mg CE/g dry bark
• Stiasny number: 24.03 ± 4.27 %
Extracts showed lower antioxidant capacity than BHA and α-tocopherol in FRAP, ABTS, and DPPH assays.
Conclusion: Hydrothermal treatment is a sustainable method to obtain phenolic-rich extracts with measurable antioxidant capacity and promising adhesive properties, supporting their potential application in bioadhesive formulations.
Descripción:
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3rd CIBIQ - Iberoamerican Congress on Chemical Engineering. Set. 2025. Lisboa, Portugal.
Financiadores:
ANII FMV_1_2021_1_166365
ANII Beca de Maestría (POS_FMV_2021_1_1010831).
ANII Beca de Maestría (POS_FMV_2021_1_1010831).
Citación:
Pisani, J., Xavier, L. y Zecchi, B. Hydrothermal extraction of tannins from pine bark: Optimization, characterization and comparison with commercial antioxidants [en línea] Póster, 2025.
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| PXZ25.pdf | Póster | 1.45 MB | Adobe PDF |