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KMID : 1098420120200030165
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Korean Journal of Medicinal Crop Science
2012 Volume.20 No. 3 p.165 ~ p.170
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Effects of LED (Light-Emitting Diode) Treatment on Antioxidant Activities and Functional Components in Taraxacum officinale
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Ryu Jai-hyuk
Seo Kyoung-Sun
Kuk Yong-In
Moon Jae-Hak
Ma Kyung-Ho
Choi Seong-Kyu
Rha Eui-Shik
Lee Sheong-Chun
Bae Chang-hyu
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Abstract
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This study was conducted to evaluate the effect of light spectrum using red (660 ㎚), blue (460 ㎚), red and blue mixed (Red : Blue = 6 : 4) LED (light-emitting diode), and fluorescent lamp on antioxidant activities and functional components of dandelion (Taraxacum officinale). Total polyphenol contents in dandelion irradiated with the red and blue mixed or the red LED were 121.77 ㎎/100 g or 115.36 ㎎/100 g, respectively, which were greater than those in dandelion treated with blue LED and fluorescent lamp. Asparagine showed the highest content among amino acids in leaves and roots regardless of treatments. Total amino acid was the highest when illuminated with the red LED. DPPH (1,1-diphenyl-2-picrylhydrazyl)radical-scavenging activity and SOD (super oxide dismutase) activity of ethanol extracts were increased under all of the LED treatments compared with fluorescent lamp, and the antioxidant activities were increased by the red and the mixed LED illumination. The results indicate that application of the red and the mixed LED illumination promote antioxidant activity and increase functional components during cultivation of dandelion.
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KEYWORD
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Taraxacum officinale, LED Illumination, Antioxidant Activities, Functional Components
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