Enhancing the Growth, Bioactive Compounds, and Antioxidant Activity of Kangkong ( Ipomoea aquatica Forssk.) Microgreens Using Dielectric Barrier Discharge Plasma

Prapasiri Ongrak, Nopporn Poolyarat, Suebsak Suksaengpanomrung, Bhornchai Harakotr, Yaowapha Jirakiattikul () and Panumart Rithichai ()
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Prapasiri Ongrak: Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand
Nopporn Poolyarat: Center of Advanced Nuclear Technology, Thailand Institute of Nuclear Technology (Public Organization), Nakhon Nayok 26120, Thailand
Suebsak Suksaengpanomrung: Center of Advanced Nuclear Technology, Thailand Institute of Nuclear Technology (Public Organization), Nakhon Nayok 26120, Thailand
Bhornchai Harakotr: Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand
Yaowapha Jirakiattikul: Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand
Panumart Rithichai: Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand

Resources, 2025, vol. 14, issue 5, 1-19

Abstract: Enhancing the nutraceutical value of health-promoting foods is a strategy to mitigate non-communicable diseases (NCDs), which pose a global health threat. This study aimed to improve the growth, bioactive compound content, and antioxidant activity of kangkong ( Ipomoea aquatica Forssk.) microgreens through the application of dielectric barrier discharge (DBD) plasma at different treatment durations. Seeds from two cultivars, Pugun 19 (PG) and Banhann (BH), were treated with DBD plasma for 5 to 20 min, compared to untreated seeds as the control. DBD plasma treatments had no significant effect on the dry weight of BH, whereas a 10 min treatment resulted in the highest dry weight in PG. Principal component analysis exhibited that treating PG seeds with 5 min of DBD plasma increased coumaric acid, total flavonoids, and DPPH and FRAP activities. Meanwhile, exposing BH seeds to 10 min DBD plasma treatment enhanced carotenoids content, as well as ABTS and antiglycation activities. Based on these results, the optimal time for DBD plasma treatment to improve the quality of kangkong microgreens was 5 min for PG and 10 min for BH. These findings indicate that DBD plasma treatment offers potential applications in sustainable agriculture and food biofortification.

Keywords: antiglycation; antioxidants; DBD plasma; Ipomoea aquatica; non-thermal plasma; PCA; phenolic profile (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2025
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