Combined effects of ultra-high pressure homogenization and short-wave ultraviolet radiation on the properties of cloudy apple juice
This work addresses the physicochemical, enzymatic and sensory changes in cloudy apple juice treated by ultra- high pressure homogenization (UHPH) and short-wave ultraviolet radiation (UV–C) applied at 20 ¿C. Those technologies were applied in single and combined treatments at different UHPH pressur...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/360494 |
| Acesso em linha: | https://hdl.handle.net/2117/360494 https://dx.doi.org/10.1016/j.lwt.2020.110286 |
| Access Level: | acceso abierto |
| Palavra-chave: | Apple juice Sensory evaluation Suc de poma Àrees temàtiques de la UPC::Enginyeria agroalimentària::Indústries agroalimentàries::Tecnologia dels aliments |
| Resumo: | This work addresses the physicochemical, enzymatic and sensory changes in cloudy apple juice treated by ultra- high pressure homogenization (UHPH) and short-wave ultraviolet radiation (UV–C) applied at 20 ¿C. Those technologies were applied in single and combined treatments at different UHPH pressures (200–300 MPa) and UV-C doses (14.3–27.8 J/mL). UV-C treatments could not effectively inactivate enzymes, but treatments at 300- MPa UHPH reduced pectin methylesterase activity to a 24.6%, and polyphenol oxidase activity was not detected. Those samples presented a higher antioxidant capacity (283% measured by FRAP, and 286.4% by DPPH) than in non-treated juice, and after a combination with 28.7 J/mL of UV-C the polyphenols content augmented to 277.6%. Sensory evaluation revealed that UHPH at 300 MPa and UV-C at 21.5 J/mL significantly changed perceptible odour and overall flavour of cloudy apple juice, while treatments at 200 MPa didn’t produce any significant changes in the different parameters. |
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