Centrifugal fractionation of softwood extracts improves the biorefinery workflow and yields functional emulsifiers
| Autor: | Petri Kilpeläinen, Leena Peltonen, Fabio Valoppi, Maarit Lahtinen, Mamata Bhattarai, Satu Kirjoranta, Venla Juntti, Kirsi S. Mikkonen |
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| Přispěvatelé: | Helsinki Institute of Sustainability Science (HELSUS), Food Materials Science Research Group, Department of Food and Nutrition, Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Food Sciences |
| Rok vydání: | 2019 |
| Předmět: |
STABILIZATION
Softwood EMULSIONS 116 Chemical sciences Fraction (chemistry) Fractionation HEMICELLULOSES WOOD 010402 general chemistry 01 natural sciences 7. Clean energy chemistry.chemical_compound PARTICLES Environmental Chemistry Lignin Hemicellulose SPRUCE GALACTOGLUCOMANNANS Molar mass STABILITY 010405 organic chemistry Chemistry food and beverages Biorefinery OIL Pollution 0104 chemical sciences Hot water extraction Chemical engineering LIGNIN NANOFIBERS |
| Zdroj: | Green Chemistry. 21:4691-4705 |
| ISSN: | 1463-9270 1463-9262 |
| Popis: | With the emerging bio-based technologies, the fractionation of complex biomass is essential to obtain value-added functional molecules for material, chemical, and energy production. Softwood extracts obtained through environmentally friendly pressurized hot water extraction are heterogeneous mixtures rich in hemicelluloses and lignin. Here we developed a simple, fast, organic solvent-free, and sustainable method to fractionate softwood extracts using centrifugal forces. The characteristics of each obtained fraction in terms of composition, macromolecular properties (particle size, molar mass, charge), interfacial activity, and stabilization capacity were highly dependent on the centrifugal force and time applied. The hemicellulose and lignin contents in the fractions were balanced by centrifugal forces to obtain functional emulsifiers that efficiently stabilized the oil/water interface. Through fractionation of softwood extracts, we also found that both the hemicelluloses and lignin particles are involved in emulsion interface formation and stabilization. We demonstrated that centrifugation at low centrifugal forces ( |
| Databáze: | OpenAIRE |
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