Recently, the sprout vegetable draws consumer attention since it takes many healthy beneficial components of the diet for humans. At the gemination stage of the sprout vegetable, its physiological activities and ingredients are changed. Due to the various environmental factors, such as light and tem...
Recently, the sprout vegetable draws consumer attention since it takes many healthy beneficial components of the diet for humans. At the gemination stage of the sprout vegetable, its physiological activities and ingredients are changed. Due to the various environmental factors, such as light and temperature, and so forth, the antioxidant and functional substances of the sprout vegetable are accumulated sharply. Motivated by this, the research was carried out to investigate the effect of LED (Light emitting diode) in various sprouted seed.
The germinated rice seeds were soaked at the 25℃ of the Dark condition for 24 hours. Dark treatment (control), Blue, Red, F-Red and UV-A lamps were installed at height of about 30 cm above the germinated rice and rice seeds were germinated at 17℃ for 7 days. Total polyphenol content, antioxidant activity and amino acid content were measured. Under the F-Red and Red light, total polyphenol contents of F-Red (261 mg GAE/100 g) and Red (258 mg GAE/100 g) sample were higher than those of others. The antioxidant activity was also increased by LED lights treatment. Especially, under the F-Red treatment, the ABTS radical scavenging activity showed 70%, which was 1.3 times higher than that of the Dark treatment. The amino acid content was increased up to 1.9 times in the UV-A lamps, 1.5 times in the F-Red, and 1.2 times in the Red treatment, respectively. Plus, Met (methionine) was increased by 3 times in Red. Val (valine) and Tyr (tyrosine) were increased by 2.5 times in UV-A lamps.
Buckwheat seeds were sown on a 27.5×20×3 cm tray. It was grown at the 20℃ of the Dark (control), Fluorescent lamptreatment (control), Blue, Red, F-Red, UV-A lamps, UV-B lamps and UV-C lamps installed at height of about 30 cm above the Buckwheat sprout seeds. As for total polyphenol content of shoot and root of the buckwheat sprout, total polyphenol content of root was increased more than 1.2 times. In the Red treatment, total polyphenol content of the buckwheat sprout-shoot and -root was 625 mg GAE/100 g and 819 mg GAE/100 g, respectively. It was higher than that of the control. In the DPPH radical scavenging activity, the antioxidant activity of shoot in Fluorescent and UV lamps was higher that those of others. In the ABTS radical scavenging activity, the activity of shoot treated with UV lamps at the harvesting stage showed 94.3% and the root in red 98.2% compared to others. About reducing power activity, the shoot of F-Red exhibited higher absorbance (1.497) than others and root absorbance (1.248) of Red treatment showed the highest level. The essential amino acid content was increased by 1.3 times in F-Red. Of all them, Leu (leucine), Met (methionine) and Phe (phenyl alanine) were increased by 1.3, 1.4 and 1.6 times, respectively. Regarding non-essential amino acid content, Asp (aspartic acid) in F-Red was increased by 1.5 times and Gly (glycine) of F-Red and UV-B lamp was increase by 2.3 and 2 times, respectively. The level of rutin (179 mg/100 g) in shoot treated with F-Red was the highest compared to those of others. Overall, rutin content of root at the harvesting stage was decreased.
Peanut sprouts were sown on a 27.5×15.9×13 cm tray at the 25℃ and grown under the dark condition for 14 days. The research was carried out to investigate cotyledon, epicotyl and leaf, hypocotyl, root, total polyphenol content of root, antioxidant activity of root, amino acid content of root, and resveratrol content of root in light conditions for 24 hours. The total phenolic content and antioxidant activity of peanut sprout were high in order of epicotyl, leaf, root, cotyledon and hypocotyl. As touching total polyphenol content of epicotyl and leaf of the peanut sprouts, total polyphenol content of leaf was 288mg GAE/100g in Blue. In the total polyphenol content of root, its content showed 231 mg/100 g in UV-B lamp. In DPPH radical scavenging activity, DPPH radical scavenging activity (63%) of cotyledon was increased by 1.3~1.5 times in Blue compared to control, and DPPH radical scavenging activity (40%) of hypocotyl was increased by 2 times. In the ABTS radical scavenging activity, its activity was increased by light treatment. Especially, the highest activity of the hypocotyl and leaf (99.1%) was shown in Blue. The essential amino acid content of hypocotyl and leaf was increased by 1.9 times in the UV-B lamp, 1.6 times in Red, and 1.5 times in F-Red, respectively. The non-essential amino acid content was increased by light treatment in hypocotyl and leaf. Among them, Tyr (Tyrosine) was increased by 2.3 times in F-Red, and 2.1 times in UV-B lamp. Asp (aspartic acid) of root was increased by 4times in UV-B lamp. The content of resveratrol was different based on the plant tissues treated with LED. When analyzing total peanut sprout, the content of resveratrol was increased by 1.3 times in UV-B lamp compared to that of other tissues.
Assessing inclusively, this study showed that there was a significantly positive effect between the increase of physiological substance activity and LED light treatment, resulting in stably producing sprout vegetables. Therefore, the material treated with LED is though to be useful as a functional food resources.
Recently, the sprout vegetable draws consumer attention since it takes many healthy beneficial components of the diet for humans. At the gemination stage of the sprout vegetable, its physiological activities and ingredients are changed. Due to the various environmental factors, such as light and temperature, and so forth, the antioxidant and functional substances of the sprout vegetable are accumulated sharply. Motivated by this, the research was carried out to investigate the effect of LED (Light emitting diode) in various sprouted seed.
The germinated rice seeds were soaked at the 25℃ of the Dark condition for 24 hours. Dark treatment (control), Blue, Red, F-Red and UV-A lamps were installed at height of about 30 cm above the germinated rice and rice seeds were germinated at 17℃ for 7 days. Total polyphenol content, antioxidant activity and amino acid content were measured. Under the F-Red and Red light, total polyphenol contents of F-Red (261 mg GAE/100 g) and Red (258 mg GAE/100 g) sample were higher than those of others. The antioxidant activity was also increased by LED lights treatment. Especially, under the F-Red treatment, the ABTS radical scavenging activity showed 70%, which was 1.3 times higher than that of the Dark treatment. The amino acid content was increased up to 1.9 times in the UV-A lamps, 1.5 times in the F-Red, and 1.2 times in the Red treatment, respectively. Plus, Met (methionine) was increased by 3 times in Red. Val (valine) and Tyr (tyrosine) were increased by 2.5 times in UV-A lamps.
Buckwheat seeds were sown on a 27.5×20×3 cm tray. It was grown at the 20℃ of the Dark (control), Fluorescent lamptreatment (control), Blue, Red, F-Red, UV-A lamps, UV-B lamps and UV-C lamps installed at height of about 30 cm above the Buckwheat sprout seeds. As for total polyphenol content of shoot and root of the buckwheat sprout, total polyphenol content of root was increased more than 1.2 times. In the Red treatment, total polyphenol content of the buckwheat sprout-shoot and -root was 625 mg GAE/100 g and 819 mg GAE/100 g, respectively. It was higher than that of the control. In the DPPH radical scavenging activity, the antioxidant activity of shoot in Fluorescent and UV lamps was higher that those of others. In the ABTS radical scavenging activity, the activity of shoot treated with UV lamps at the harvesting stage showed 94.3% and the root in red 98.2% compared to others. About reducing power activity, the shoot of F-Red exhibited higher absorbance (1.497) than others and root absorbance (1.248) of Red treatment showed the highest level. The essential amino acid content was increased by 1.3 times in F-Red. Of all them, Leu (leucine), Met (methionine) and Phe (phenyl alanine) were increased by 1.3, 1.4 and 1.6 times, respectively. Regarding non-essential amino acid content, Asp (aspartic acid) in F-Red was increased by 1.5 times and Gly (glycine) of F-Red and UV-B lamp was increase by 2.3 and 2 times, respectively. The level of rutin (179 mg/100 g) in shoot treated with F-Red was the highest compared to those of others. Overall, rutin content of root at the harvesting stage was decreased.
Peanut sprouts were sown on a 27.5×15.9×13 cm tray at the 25℃ and grown under the dark condition for 14 days. The research was carried out to investigate cotyledon, epicotyl and leaf, hypocotyl, root, total polyphenol content of root, antioxidant activity of root, amino acid content of root, and resveratrol content of root in light conditions for 24 hours. The total phenolic content and antioxidant activity of peanut sprout were high in order of epicotyl, leaf, root, cotyledon and hypocotyl. As touching total polyphenol content of epicotyl and leaf of the peanut sprouts, total polyphenol content of leaf was 288mg GAE/100g in Blue. In the total polyphenol content of root, its content showed 231 mg/100 g in UV-B lamp. In DPPH radical scavenging activity, DPPH radical scavenging activity (63%) of cotyledon was increased by 1.3~1.5 times in Blue compared to control, and DPPH radical scavenging activity (40%) of hypocotyl was increased by 2 times. In the ABTS radical scavenging activity, its activity was increased by light treatment. Especially, the highest activity of the hypocotyl and leaf (99.1%) was shown in Blue. The essential amino acid content of hypocotyl and leaf was increased by 1.9 times in the UV-B lamp, 1.6 times in Red, and 1.5 times in F-Red, respectively. The non-essential amino acid content was increased by light treatment in hypocotyl and leaf. Among them, Tyr (Tyrosine) was increased by 2.3 times in F-Red, and 2.1 times in UV-B lamp. Asp (aspartic acid) of root was increased by 4times in UV-B lamp. The content of resveratrol was different based on the plant tissues treated with LED. When analyzing total peanut sprout, the content of resveratrol was increased by 1.3 times in UV-B lamp compared to that of other tissues.
Assessing inclusively, this study showed that there was a significantly positive effect between the increase of physiological substance activity and LED light treatment, resulting in stably producing sprout vegetables. Therefore, the material treated with LED is though to be useful as a functional food resources.
주제어
#germinated rice buckwheat peanut sprout LED light antioxidant amino acid
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