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장문식,정욱순,이선미,남태규,박종일,강명화,김대옥,황재성,엄석현 한국원예학회 2014 Horticulture, Environment, and Biotechnology Vol.55 No.2
Safflower sprouts were grown under different light frequencies and conditions, including fluorescent whitelight, red LED or blue LED light and darkness. The sprout extracts were tested for their inhibitory effect on melaninsynthesis. Two compounds from safflower sprout extract were isolated and tested for their activities. Safflower seedswere sown in growth chambers set to lights and harvested at 9 days after sowing. Methanolic extracts of safflowersprouts were subjected to melanin synthesis inhibitory effect on MTT [3-(4,5-Dimethylthiazol-2-yl)-2,5-DiphenyltetraxoliumBromide] and melanin bioassay methods with a dose dependent manner. Two compounds were identified by usingopen column chromatography and LC-MS (liquid chromatography-mass spectrometry) analysis. The MTT and melaninbioassays with the identified compounds were conducted. Darkness or fluorescent white light irradiation induced extractswith inhibitory effects on melanin synthesis (in a dose dependent manner). In contrast, blue light induced extracts toslightly increase melanin synthesis. It was found that 8-hydroxyarctigenin, a compound isolated from the safflower sproutsgrown under fluorescent white light for 9 days after germination, induced inhibitory effect of melanin synthesis. Thecompound was contained more in the darkness or fluorescent white light treatment than others. Safflower sprouts grownunder dark or fluorescent white light conditions were more effective on inhibiting melanin synthesis than conditions underred or blue light. An active compound, 8-hydroxyarctigenin, may be a useful whitening agent in cosmetic resources.