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유재묘 ( Jae Myo Yu ),김동희 ( Dong Hee Kim ),손준호 ( Jun Ho Son ) 한국응용생명화학회 2015 Journal of Applied Biological Chemistry (J. Appl. Vol.58 No.3
Recently many effort focused to understand the mechanical insights of melanogenesis to develop the agent for hyper-pigmentation. So this study was performed to investigate the depigmentation of Vitex rotundifolia. With B16F10 mouse melanoma cell, we have seen inhibition of the tyrosinase, MITF, TRP-1, TRP-2, and melanin synthesis, which eventually were dose dependently decreased by Vitex rotundifolia. Specially, Vitex rotundifolia decreased the protein levels of tyrosinase and TRP-1. In conclusion, Vitex rotundifolia showed the whitening activity in all the experiments mentioned above and we expect that it can be used for preventing melanin synthesis.
탁리산 용매 분획물의 in vitro 항산화, 주름 억제 및 미백 효과
유재묘 ( Jae-myo Yu ),강윤환 ( Yun-hwan Kang ),김동희 ( Dong-hee Kim ),박태순 ( Tae-soon Park ) 한국응용생명화학회 2017 Journal of Applied Biological Chemistry (J. Appl. Vol.60 No.3
In this study, the activity of Takli-san for anti-oxidation, anti-wrinkle and whitening effect was verified and its applicability as a cosmetic material was confirmed. 1-1-diphenyl-2-picrylhydrazyl radical scavenge, 2,2`-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenge, elastase and tyrosinase inhibitory activity were investigated by solvent fraction, and ethyl acetate fraction of water extract from Takli-san (TW-EA) showed the highest inhibitory activity. Western blot was performed to confirm anti-wrinkle and whitening effect in the cells, and it was investigeted that the TW-EA inhibition effect was superior to that of the positive contol used for the comparison test. Through the results of the experiments, the applicability as a cosmetic material of Takli-san was verified.
맥문동탕 용매 분획물의 UV에 의한 피부손상 개선 효능평가
유재묘 ( Jae-myo Yu ),강윤환 ( Yun-hwan Kang ),김보미 ( Bo-mi Kim ),김동희 ( Dong-hee Kim ),박태순 ( Tae-soon Park ) 한국응용생명화학회 2018 Journal of Applied Biological Chemistry (J. Appl. Vol.61 No.3
In this study, we verified the 1-1-diphenyl-2-picrylhydrazyl radical scavenge, 2,2'-azinobis(3-ethylbenzothiazoline-6- sulfonic acid) radical scavenge, elastase, tyrosinase inhibitory effect by using the solvent fractions of Maekmoondong-tang hot water extract. As a result, the ethyl acetate fraction (MW-EA) showed the highest inhibitory activity. In cell-based assays, MWEA treatment confirmed a 34% (100 μg/mL) efficacy in reactive oxygen species inhibitory activity, and at the same concentration, MMPs showed more than 50% inhibition and tyrosinase inhibited 25% (50 μg/mL). Therefore Maekmoondong-tang is considered high development potential as a material to improve the skin.
CCD-986sk 세포내에서의 노랑어리연꽃 추출물 및 분획물의 주름개선 효과
김유아 ( You Ah Kim ),김동희 ( Dong Hee Kim ),유재묘 ( Jae Myo Yu ),박채빈 ( Chae Bin Park ),박태순 ( Tae Soon Park ),박병준 ( Byoung Jun Park ) 한국응용생명화학회 2017 Journal of Applied Biological Chemistry (J. Appl. Vol.60 No.4
The purpose of this study was to investigate the anti-aging effect in the fibroblasts by using the extracts and fractions of Nymphoides peltata for the development of new functional cosmetic materials. The anti-aging effects of the extracts and fractions of N. peltata were measured using CCD-986sk cells. Ethyl aceate (EA) fraction inhibited UVB-induced reactive oxygen species expression by more than 50%, and n-butyl alcohol (BuOH) fraction increased expression of pro-collagen mRNA by more than 50% at 25 μg/mL. In addition, EA and BuOH fractions inhibited MMP-1 protein and mRNA expression in a concentration-dependent manner, BuOH fraction inhibited MMP-1 mRNA expression by more than 40% at 10 μg/mL. Especially, the high efficacy of EA and BuOH of the N. peltata was confirmed. Therefore, the EA and BuOH of N. peltata are expected to be useful as anti-aging materials in cosmetics field.
어리연꽃 추출물이 α-MSH 유도에 의한 멜라닌 생성 억제에 미치는 영향
김동희 ( Dong-hee Kim ),김유아 ( You-ah Kim ),유재묘 ( Jae-myo Yu ),박채빈 ( Chae-bin Park ),박병준 ( Byoung-jun Park ),박태순 ( Tae-soon Park ) 한국응용생명화학회 2017 Journal of Applied Biological Chemistry (J. Appl. Vol.60 No.4
In this study, the whitening activity of Nymphoides indica extract in B16F10 cells were measured. Inhibition rate of tyrosinase from mushroom was 42% at 1,000 μg/mL. And inhibition of tyrosinase and melanin biosynthesis in B16F10 cells were 26 and 25% at 5 μg/mL, respectively. The expression levels of cAMP and protein kinase A (PKA), which are higher levels of melanin-related factors, were found to be decreased in a dose-dependent manner. In addition, the expression rate of protein and mRNA of tyrosinase, tyrosinase related protein 1 (TRP1), tyrosinase related protein 2 (TRP2) and microphthalmia associated trans-cription factor (MITF). In this study, it was confirmed that the N. indica extract effectively inhibited the activity of tyrosinase, TRP1, TRP2 and MITF as well as the activity of PKA by effectively inhibiting cAMP. Therefore, it was confirmed that the N. indica extract has high value as a functional material.
UVB유도성 CCD-986sk cell에서의 Casuarictin의 항노화 효과
김유아 ( You Ah Kim ),김동희 ( Dong Hee Kim ),김영아 ( Young A Kim ),유재묘 ( Jae Myo Yu ),박병준 ( Byoung Jun Park ),손준호 ( Jun Ho Son ) 한국응용생명화학회 2017 Journal of Applied Biological Chemistry (J. Appl. Vol.60 No.1
To develop a new functional agent for cosmetics, we investigated the anti-aging activities in fibroblasts of casuarictin. The anti-aging effect of casuarictin in CCD-986sk cell was as follows: it inhibited ROS expression increased by Ultraviolet B and suppressed pro-collagen expression. Also, casuarictin had inhibited Matrix metalloproteinase-1 expression. Therefore, the results suggested that casuarictin has considerable potential as a cosmetics ingredient with a anti-aging effect.