Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties
The simultaneous use of UV-C radiation at 640 or 900 μWcm-2 and ultrasonic energy of 13.78 W/L at 40 kHz was applied on tomatoes to study its ability to disinfect tomatoes from microbes. Total aerobic bacteria and yeast and mold population decreased with increase of UV-C dosage application from 0.72...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EJournal Publishing
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/73898/1/Simultaneous%20UV.pdf |
| _version_ | 1825950268680830976 |
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| author | Esua, Okon Johnson Chin, Nyuk Ling Yusof, Yus Aniza |
| author_facet | Esua, Okon Johnson Chin, Nyuk Ling Yusof, Yus Aniza |
| author_sort | Esua, Okon Johnson |
| collection | UPM |
| description | The simultaneous use of UV-C radiation at 640 or 900 μWcm-2 and ultrasonic energy of 13.78 W/L at 40 kHz was applied on tomatoes to study its ability to disinfect tomatoes from microbes. Total aerobic bacteria and yeast and mold population decreased with increase of UV-C dosage application from 0.72-10.76 kJ/m2 at constant ultrasonic energy supply. At simultaneous treatment dosage of 6.46 kJ/m2, total aerobic bacteria were significantly (p<0.001) reduced by 2 log reductions. Yeast and mold survivors were undetected at higher dosage treatment from 4.31 to 10.76 kJ/m2. Lower dosage treatment from 0.72 to 2.15 kJ/m2 presented minor log reductions of 0.14 to 0.75. The treatment also stimulated 41.26-50.37% increase of total phenols from an initial value of 13.38 mg GAE 100g-1 FW. Antioxidant activity increase from 27.51-36.07% was obtained at dosage level of 8.61 kJ/m2. |
| first_indexed | 2024-03-06T10:12:03Z |
| format | Article |
| id | upm.eprints-73898 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:12:03Z |
| publishDate | 2018 |
| publisher | EJournal Publishing |
| record_format | dspace |
| spelling | upm.eprints-738982022-05-17T08:49:47Z http://psasir.upm.edu.my/id/eprint/73898/ Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties Esua, Okon Johnson Chin, Nyuk Ling Yusof, Yus Aniza The simultaneous use of UV-C radiation at 640 or 900 μWcm-2 and ultrasonic energy of 13.78 W/L at 40 kHz was applied on tomatoes to study its ability to disinfect tomatoes from microbes. Total aerobic bacteria and yeast and mold population decreased with increase of UV-C dosage application from 0.72-10.76 kJ/m2 at constant ultrasonic energy supply. At simultaneous treatment dosage of 6.46 kJ/m2, total aerobic bacteria were significantly (p<0.001) reduced by 2 log reductions. Yeast and mold survivors were undetected at higher dosage treatment from 4.31 to 10.76 kJ/m2. Lower dosage treatment from 0.72 to 2.15 kJ/m2 presented minor log reductions of 0.14 to 0.75. The treatment also stimulated 41.26-50.37% increase of total phenols from an initial value of 13.38 mg GAE 100g-1 FW. Antioxidant activity increase from 27.51-36.07% was obtained at dosage level of 8.61 kJ/m2. EJournal Publishing 2018-09 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/73898/1/Simultaneous%20UV.pdf Esua, Okon Johnson and Chin, Nyuk Ling and Yusof, Yus Aniza (2018) Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties. Journal of Advanced Agricultural Technologies, 5 (3). 209 - 214. ISSN 2373-423X http://www.joaat.com/index.php?m=content&c=index&a=show&catid=52&id=270 |
| spellingShingle | Esua, Okon Johnson Chin, Nyuk Ling Yusof, Yus Aniza Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title | Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title_full | Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title_fullStr | Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title_full_unstemmed | Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title_short | Simultaneous UV-C and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| title_sort | simultaneous uv c and ultrasonic energy treatment for disinfection of tomatoes and its antioxidant properties |
| url | http://psasir.upm.edu.my/id/eprint/73898/1/Simultaneous%20UV.pdf |
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