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- Title
Effect of UV-C Radiation and Thermal Treatment on Volatile Compounds, Physicochemical, Microbiological and Phytochemical Parameters on Apple Juice (Malus domestica) with Raspberry (Rubus idaleus L.).
- Authors
Estrada-Beltrán, Aztrid E.; Salas-Salazar, Nora A.; Quintero-Ramos, Armando; Parra-Quezada, Rafael A.; Soto-Caballero, Mayra C.; Rodríguez-Roque, María J.; Chávez-Martínez, América; Flores-Cordova, María A.
- Abstract
Volatile compounds contribute to aroma and flavor, these being the main sensory attributes in food acceptance. This work addresses the physicochemical, volatile compounds, polyphenols, and flavonoids content and, antioxidant activity of apple-raspberry (90/10%) juice treated by thermal and ultraviolet radiation (UV-C) alone or in combination with moderate heat-treatment. Nineteen volatile compounds were identified which experienced changes depending on the treatment. Compounds such as α-ionone and β-ionone, that contribute to raspberries characteristic aroma, were present in a greater concentration in the UV-C treatment and lower in the thermal treatment. Likewise, 2-methyl butyl acetate, which give a fruity-sweet aroma typical of apples was present in a greater concentration in the UV-C treatment. Regarding polyphenol content, control and combined treatment presented the greater concentrations. However, after twenty days of storage, control and combined treatment presented the lower flavonoid concentration. Nevertheless, at this time, treatments showed no variations in antioxidant activity. Yeast and mold and total aerobic mesophilic and psychrophilic counts were reduced in the heat and combined treatments. In conclusion, UV-C and moderate heat might successfully be used to process a stable apple-raspberry juice while maintaining its quality and safety.
- Subjects
APPLE juice; HEAT radiation &; absorption; RUBUS; BUTYL acetate; RASPBERRIES; OLIVE oil; FIREPROOFING agents
- Publication
Beverages, 2024, Vol 10, Issue 1, p7
- ISSN
2306-5710
- Publication type
Article
- DOI
10.3390/beverages10010007