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| Liofilització (dessecació per congelació)× | Extracció amb fluids supercrítics× | |
|---|---|---|
| Camp | Ciència dels aliments | Ciència dels aliments |
| Família | Process / pipeline | Process / pipeline |
| Any d'origen≠ | 1890s–1930s (scientific foundations); widespread food use from 1950s onward | 1960s–1980s (industrial development; Zosel's foundational patents ~1964–1978) |
| Autor original≠ | Multiple contributors (Altmann, d'Arsonval, Bordas, Shackell — early 20th century; industrialised post-WWII) | Multiple contributors (Kurt Zosel, Gerd Brunner, and others from the 1960s–1980s) |
| Tipus≠ | Preservation and dehydration process | Physical separation and extraction technique |
| Font seminal≠ | Ratti, C. (2001). Hot air and freeze-drying of high-value foods: a review. Journal of Food Engineering, 49(4), 311-319. DOI ↗ | Brunner, G. (2005). Supercritical fluids: technology and application to food processing. Journal of Food Engineering, 67(1–2), 21–33. DOI ↗ |
| Àlies | lyophilization, lyophilisation, cryodesiccation, vacuum freeze-drying | SFE, supercritical CO2 extraction, supercritical carbon dioxide extraction, dense gas extraction |
| Relacionats≠ | 1 | 0 |
| Resum≠ | Freeze-drying, also called lyophilization, is a low-temperature dehydration process in which water is first frozen solid and then removed by sublimation under reduced pressure, bypassing the liquid phase entirely. Widely used in food science, pharmaceuticals, and biotechnology, it preserves the physical structure, nutritional composition, colour, and flavour of sensitive products far better than conventional heat-based drying methods. | Supercritical Fluid Extraction (SFE) is a separation technique that uses a fluid held above its critical temperature and pressure — most commonly carbon dioxide — to selectively dissolve and remove target compounds from a solid or liquid matrix. Widely applied in food science, nutraceutical production, and the flavour and fragrance industry, SFE offers a solvent-efficient, thermally gentle route to recovering oils, antioxidants, pigments, and bioactive compounds without the toxic residues associated with conventional organic solvents. |
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