Ultraviolet-c treatment is an emerging food processing technology for health-conscious consumers. Freshly squeezed
Chokanan mango juice was exposed to UV-C light (for 15, 30 and 60 min at 25 ◦C) and thermally pasteurized (at
90 ◦C for 60 s) to compare the effect on microbial inactivation, physicochemical properties, antioxidant activities and
other quality parameters. In addition, shelf life study of juice samples stored at 4
±
1 ◦C was conducted for 5 weeks.
After UV-C treatment and thermal pasteurization, no significant changes occurred in physicochemical properties.
A significant increase in extractability of carotenoids (6%), polyphenols (31%), and flavonoids (3%) were observed in
juice exposed to UV-C light for 15 and 30 min, when compared to freshly squeezed juice. Besides that, enhancement
of antioxidant activity was observed after UV-C treatment. Thermal pasteurization and UV-C treatment exhibited
significant reduction in microbial load and prolonged shelf-life of juice. The results obtained support the use of UVC
light to improve the quality of Chokanan mango juice along with safety standards as an alternative to thermal
pasteurization.
Ultraviolet-c treatment is an emerging food processing technology for health-conscious consumers. Freshly squeezedChokanan mango juice was exposed to UV-C light (for 15, 30 and 60 min at 25 ◦C) and thermally pasteurized (at90 ◦C for 60 s) to compare the effect on microbial inactivation, physicochemical properties, antioxidant activities andother quality parameters. In addition, shelf life study of juice samples stored at 4±1 ◦C was conducted for 5 weeks.After UV-C treatment and thermal pasteurization, no significant changes occurred in physicochemical properties.A significant increase in extractability of carotenoids (6%), polyphenols (31%), and flavonoids (3%) were observed injuice exposed to UV-C light for 15 and 30 min, when compared to freshly squeezed juice. Besides that, enhancementof antioxidant activity was observed after UV-C treatment. Thermal pasteurization and UV-C treatment exhibitedsignificant reduction in microbial load and prolonged shelf-life of juice. The results obtained support the use of UVClight to improve the quality of Chokanan mango juice along with safety standards as an alternative to thermalpasteurization.
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