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Effect of atmospheric pressure dielectric barrier discharge plasma on the biological activity of naringin
- Kim, Hyun-Joo, Yong, Hae In, Park, Sanghoo, Kim, Kijung, Kim, Tae Hoon, Choe, Wonho, Jo, Cheorun
- Food chemistry 2014 v.160 pp. 241-245
- Salmonella Typhimurium, air, anti-infective properties, atmospheric pressure, food pathogens, free radical scavengers, methanol, naringin
- The biological activity of naringin treated with atmospheric pressure plasma was evaluated to investigate whether exposure to plasma can be used as a method to improve the biological activity of natural materials. Naringin was dissolved in methanol (at 500ppm) and transferred to a container. A dielectric barrier discharge (DBD) (250W, 15kHz, ambient air) was then generated. Treatment with the plasma for 20min increased the radical-scavenging activity, FRAP value, and the total phenolic compound content of naringin from 1.45% to 38.20%, from 27.78 to 207.78μM/g, and from 172.50 to 225.83ppm, respectively. Moreover, the tyrosinase-inhibition effect of naringin increased from 6.12% to 83.30% upon plasma treatment. Naringin treated with plasma exhibited antimicrobial activity against foodborne pathogens, especially Salmonella Typhimurium; an activity that was absent before plasma treatment. Structural modifications induced in the naringin molecule by plasma might be responsible for improving the biological activity of naringin.