Effects of simultaneous UV-C radiation and ultrasonic energy postharvest treatment on bioactive compounds and antioxidant activity of tomatoes during storage
The effects of a novel technology utilizing a simultaneous combination of Ultraviolet-C radiation and ultrasound energy postharvest treatment on tomato bioactive compounds during 28 days’ storage period was investigated by varying Ultraviolet-C radiation intensities of 639.37 or 897.16 µW/cm2 at a c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/79623/ http://psasir.upm.edu.my/id/eprint/79623/1/Effects%20of%20simultaneous%20UV-C%20radiation%20and%20ultrasonic%20energy%20postharvest%20treatment%20on%20bioactive%20compounds%20and%20antioxidant%20activity%20of%20tomatoes%20during%20storage.pdf |
| Summary: | The effects of a novel technology utilizing a simultaneous combination of Ultraviolet-C radiation and ultrasound energy postharvest treatment on tomato bioactive compounds during 28 days’ storage period was investigated by varying Ultraviolet-C radiation intensities of 639.37 or 897.16 µW/cm2 at a constant ultrasound intensity of 13.87 W/L from a 40 kHz–1 kW transducer. A minimal treatment time of 240 s at Ultraviolet-C dosage of 2.15 kJ/m2 was observed to provoke a considerable increase in bioactive compounds content, proportionated to treatment time. Although treatment led to temperature increase in the system reaching 39.33 °C due to heat generation by ultrasonic cavitation, the extractability and biosynthesis of phytochemicals were enhanced resulting in 90%, 30%, 60%, 20%, and 36% increases in lycopene, total phenols, vitamin C, hydrophilic and lipophilic antioxidant activities respectively. Results present the potential use of the combined non-thermal technologies as post-harvest treatment to improve bioactive compounds and antioxidant activity during storage. |
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