• 제목/요약/키워드: Melanin inhibition

검색결과 380건 처리시간 0.023초

앵두과즙과 Ethanol 추출액의 In vitro에서 Tyrosinase 활성 저해효과 (Inhibitory Effect of Ethanol Extract and Juice of the Korean Cherry (Prunus tomentosa Thunberg) on Tyrosinase Activity In vitro)

  • 황호선;김중만;송영애;전예정
    • 한국식품과학회지
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    • 제33권6호
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    • pp.760-763
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    • 2001
  • 본 연구는 앵두 과즙과 ethanol 추출액의 tyrosinase 활성억제효과를 조사하였다. 앵두과즙에 대한 tyrosinase 활성 저해효과는 반응 초기에 가장 높았으나 점차 감소하는 경향을 보였으며 앵두과즙의 농도가 높을수록 높은 저해율을 보였다. 앵두 ethanol 추출액의 tyrosinase 활성 저해효과는 ethanol 추출액에서 얻어진 추출물의 농도가 높을수록 증가하였으며 70%(v/v) ethanol 추출액에서 가장 높았다. 한편 70%(v/v) ethanol 추출액의 전처리 시료중 ethyl acetate층이 73.8%의 높은 tyrosinase 활성 저해율을 보였다. 이는 앵두의 특정성분이 tyrosinase 활성을 저해하는 것으로 판단되어 기능성을 나타내는 물질에 대한 정성 및 정량의 추가적인 연구가 필요하다.

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ERK Activation by Fucoidan Leads to Inhibition of Melanogenesis in Mel-Ab Cells

  • Song, Yu Seok;Balcos, Marie Carmel;Yun, Hye-Young;Baek, Kwang Jin;Kwon, Nyoun Soo;Kim, Myo-Kyoung;Kim, Dong-Seok
    • The Korean Journal of Physiology and Pharmacology
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    • 제19권1호
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    • pp.29-34
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    • 2015
  • Fucoidan, a fucose-rich sulfated polysaccharide derived from brown seaweed in the class Phaeophyceae, has been widely studied for its possible health benefits. However, the potential of fucoidan as a possible treatment for hyperpigmentation is not fully understood. This study investigated the effects of fucoidan on melanogenesis and related signaling pathways using Mel-Ab cells. Fucoidan significantly decreased melanin content. While fucoidan treatment decreased tyrosinase activity, it did not do so directly. Western blot analysis indicated that fucoidan downregulated microphthalmia-associated transcription factor and reduced tyrosinase protein expression. Further investigation showed that fucoidan activated the extracellular signal-regulated kinase (ERK) pathway, suggesting a possible mechanism for the inhibition of melanin synthesis. Treatment with PD98059, a specific ERK inhibitor, resulted in the recovery of melanin production. Taken together, these findings suggest that fucoidan inhibits melanogenesis via ERK phosphorylation.

Bioassay-Guided Isolation and Identification of Compounds from Arecae Pericarpium with Anti-inflammatory, Anti-oxidative, and Melanogenesis Inhibition Activities

  • Indriana, Amelia;Lee, Kyoung Jin;Kim, Yeong Shik
    • Natural Product Sciences
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    • 제22권3호
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    • pp.193-200
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    • 2016
  • This study describes the anti-inflammatory, anti-oxidant, and melanogenesis inhibition activities of methanol extract and various organic solvent fractions of Arecae Pericarpium. We examined the inhibition of lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW 264.7 cells, 1,1-diphenyl-2-picrylhydrazine (DPPH) scavenging activity, mushroom tyrosinase inhibition activity and melanin contents. The study showed that, among all tested fractions, methylene chloride fraction showed the strongest inhibition of LPS-induced NO production in RAW 264.7 cells ($IC_{50}$ value $8.89{\mu}g/mL$) and DPPH radical scavenging activity ($EC_{50}$ value $21.39{\mu}g/mL$). Methylene chloride and ethyl acetate fractions similarly inhibited mushroom tyrosinase activity. Methanol extract exhibited strongest reduction of melanin content in B16F10 melanoma cells. Based on the bioactivity assay results, methylene chloride and ethyl acetate fractions were further separated. Eight phenolic compounds were isolated, which are dimeric syringol (1), catechol (2), 4-hydroxybenzaldehyde (3), vanillin (4), 4-hydroxyacetophenone (5), apocynin (6), protocatechuic acid (7) and 4-hydroxybenzoic acid (8). Among the isolated compounds tested, catechol showed the strongest inhibition of LPS-induced NO production in RAW 264.7 cells. Catechol also showed the concentration-dependent NF-${\kappa}B$ inhibition activity. Arecae Pericarpium might have potentials to be developed as anti-inflammatory agent or dermatological product for skin-whitening agent.

도인승기탕 및 그 구성약재의 화장품약리활성 (Cosmeceutical Activities of Doinseunguitang and Its Composition)

  • 이진영;이수연;전혜지;윤지영;황현욱;박주훈;안봉전;손준호;황주영
    • 대한본초학회지
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    • 제27권5호
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    • pp.65-75
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    • 2012
  • Objectives : Cosmeceutical activities such as anti-oxidative and anti-aging effects of the Doinseunguitang and its composition, a traditional prescription, were evaluated. Methods : We performed MTT assay, melanin synthesis inhibition assay, DPPH free radical scavenging assay, SOD-like activity, xanthine oxidase inhibition assay, astringent activity assay, tyrosinase inhibition assay, elastase and collagenase inhibition assay. Results : The results were obtained as follows : DPPH free radical scavenging of water extract Doinseunguitang (DISG) and ethanol extract DISG was 60% and 50% at 1,000 ppm. Xanthine oxidase inhibition effect of ethanol extract showed more than 80% at 500 ppm. Tyrosinase inhibition and inhibition melanin synthesis activities were measured in 40% and 50% at 1,000 ppm and 100 ppm. Elastase and collagenase inhibition rate of ethanol extracts DISG 40% and 80% at 1,000 ppm. It was concluded that compositive ingredients (Persicae Seman, Glycyrrhizae Radix, Cinnamomi Ramulus, Rhei Rhizoma) influenced the most results. Conclusions : The results indicated that, ethanol extract which is superior in its anti-oxidative and anti-aging effects is useful to be applied in herbal cosmetic industry.

녹차씨 껍질 에탄올 추출물의 미백 활성 (Whitening Effect of Green Tea Seed Shell Ethanol Extracts)

  • 송하연;성낙윤;정필문;강민수;박원종;변의홍
    • 한국식품영양과학회지
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    • 제44권10호
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    • pp.1470-1475
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    • 2015
  • 본 연구는 산업 부산물의 이용성 향상을 위하여 폐자원인 녹차씨 껍질 추출물의 미백 활성을 평가하기 위하여 수행되었다. 녹차씨 껍질로부터 유용성 성분을 얻기 위하여 에탄올 추출을 한 결과 건조중량 대비 1.24%의 추출물의 수율을 얻을 수 있었고, DPPH 라디칼 소거능 및 tyrosinase 억제능을 관찰한 결과 녹차씨 껍질 추출물의 농도가 증가할수록 활성이 유의적으로 증가하는 것으로 나타났다. 또한 이러한 미백 효과가 세포 내에서도 일어나는지에 관하여 알아보기 위하여 melanoma 세포인 B16BL6에 ${\alpha}$-MSH를 처리하여 melanin의 형성을 촉진시키는 melanogenesis 과정을 유도한 후 녹차씨 껍질 추출물을 처리한 결과 농도 의존적으로 melanin의 형성이 감소되는 것을 알 수 있었다. 이상의 결과로 녹차씨 껍질 추출물의 미백 활성을 확인할 수 있었으며, 이를 활용하여 식품 및 화장품의 기능성 소재로 이용한다면 산업 부산물인 녹차씨 껍질을 활용하는 차원에서 그 경제적 가치가 매우 클 것으로 사료된다.

청정해역 곰피추출물의 세포생리활성 연구 (In vitro Effect of Ecklonia stolonifera Okamura Extract on the Cell Growth in CCD-986sk Human Fibroblast and Melanin Formation Inhibition in Clone M-3 Mouse Melanocyte Cell Line)

  • 황은경;조명환;박찬선;김명희;박갑주
    • 환경생물
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    • 제26권1호
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    • pp.30-35
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    • 2008
  • 곰피추출물의 CCD-986sk cell line monolayer (human fibroblast, KCBL-21947)에 대한 피부세포 생리활성효과를 측정하고, 또한 곰피추출물의 Clone M-3 mouse melano-cyte cell line에 대한 melanin formation 저해효과를 측정하기 위해 in vitro레벨에서 실험을 실시하였다. 곰피는 다년생 갈조류의 일종으로 이 종은 한국 연안해역에서 중요한 1차생산자의 역할을 담당하고 있는 종이며 연안 생태계에 있어서 생태학적으로나 수산업상 매우 중요한 위치를 점유하고 있다. 최근 이러한 대형 갈조류에 관한 연구는 주로 생태학적인 관점에서 이루어져 왔으며(Notoya and Aruga 1990), 유주자의 발아와 핵분열(Yabu and Notoya 1985) 등에 관한 연구가 주로 일본의 연구자들에 의하여 보고된 바 있고, 국내에서는 Park et al. (1994)이 부산만 인근해역 곰피의 생장과 연령 조성에 관한 연구를 수행하였고, 순간접착제를 이용한 곰피의 이식 등에 관한 연구(최 등 2002)가 보고된 바 있다. 그러나 지금까지 곰피의 식품 또는 약품제제로서의 기능성을 밝히는 연구는 아직 미미한 실정으로 이에 대한 체계적인 연구가 부족한 실정이다. 따라서 본 연구는 곰피추출물에 풍부하게 함유된 fucoidan, L-Ascorbic 산 및 collagen 등에 주목하여 곰피의 피부노화방지제로서의 가능성을 체계적으로 연구하기 위한 일환으로 우선 곰피추출물이 피부재생, 주름살제거 및 피부미백작용에 효과를 나타내는지 확인하기 위해 CCD-986sk cell line 및 Clone M-3 mouse melanocyte cell line을 이용하여 in vitro 수준에서 피부세포 생리활성 효과와 melanin formation 저해효과를 측정하였다. 그 결과 CCD-986sk cell line에 대한 세포생리활성 효과 실험에서 시험군인 곰피추출물 투여군은 대조군에 비해 강한 세포생리활성 효과를 나타내어 유의성 있는 실험결과를 보여주었고, Clone M-3 mouse melanocyte cell에 대한 melanin pigment 저해활성 효과 실험에서도 곰피추출물은 대조군에 비해 melanin pigment 생합성을 유의성 있게 감소시키는 실험결과를 나타내어 매우 흥미로운 결과를 보여주었다. 여러 가지 보고에 의하면 그동안 미국, 영국, 일본 등 구미 선진국의 과학자들은 intrinsic problems (피부구조 및 생리기능의 노쇠)과 extrinsic problems (자외선노출 및 스트레스)을 skin aging의 근본원인으로 규정짓고 피부 콜라겐과 엘라스틴을 재생시켜 피부 horny layer의 주름을 제거시키는 수 많은 종류의 chemical drugs를 개발하였고 현재도 개발 중에 있다 (Lavker et al. 1987; Choi and Oh 1997; Han et al. 1998). 그러나 이런 chemical에 비해 생체에 대한 부작용이나 세포독성이 상대적으로 적은 천연물을 이용하여 anti-skin aging drug을 개발하는 연구는 그 동안 부족했던 것이 현실이다. 한국은 오랜 역사를 통하여 화학물질이 아닌 다수의 천연물들을 임상에 적용하여온 역사를 가지고 있고 따라서 본 연구팀은 우리 남해안의 청정해역에서 자라는 곰피의 항피부 노화방지제로서의 개발 가능성에 주목하여 본 연구를 진행하였다. 연구 결과, 곰피추출물은 피부노화 및 skindarkness에 대한 대체치료물질 (alternative therapeutic agent)로서의 충분한 가능성을 보여주었다.

Inhibitory Effects of Plant Extracts on Tyrosinase Activity and Melanin Synthesis

  • Park, Hyen-Joo;Park, Kwang-Kyun;Hwang, Jae-Kwan;Chung, Won-Yoon;Lee, Seung-Eun;Lee, Sang-Kook
    • Natural Product Sciences
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    • 제16권2호
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    • pp.133-139
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    • 2010
  • In order to develop a new skin whitening agent, approximately 100 plant extracts were evaluated for their inhibitory activities against melanin biosynthesis in cultured mouse melanocyte melan-a cells. As a result, seven extracts exhibited over 50% inhibition of melanin synthesis compared to control at a concentration of $20\;{\mu}g/ml$. In particular, Aster ageratoides Turcz. var. ageratoides (branch, root, aerial, flower; $IC_{50}$ = 17.3, 6.1, 13.6, $12.9\;{\mu}g/ml$, respectively) and Physalis alkekengi var. francheti (leaf, unripen fructus, aerial; $IC_{50}$ = 6.5, 28.3, $23.9\;{\mu}g/ml$) markedly inhibited melanin synthesis. In addition, tyrosinase activity was monitored by the measurement of dopachrome formation from the oxidation of L-3,4-dihydroxyphenylalanine. Extracts of A. ageratoides Turcz. var. ageratoides (flower) and P. alkekengi var. francheti (leaf) showed the most potent tyrosinase inhibitory activity. These plants might be the potential candidate sources in the development of novel skin-whitening products.

Inhibitory effect of Fucofuroeckol-A from Eisenia bicyclis on tyrosinase activity and melanin biosynthesis in murine melanoma B16F10 cells

  • Shim, Kil Bo;Yoon, Na Young
    • Fisheries and Aquatic Sciences
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    • 제21권11호
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    • pp.35.1-35.7
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    • 2018
  • Background: The aim of this study was to investigate the in vitro inhibitory effects of Fucofuroeckol-A isolated from Eisenia bicyclis against tyrosinase activity and 3-isobutyl-1-methylxanthine (IBMX)-induced melanin biosynthesis in B16F10 melanoma cells. Result: Among the ethanolic (EtOH) extract of E. bicyclis and its organic solvent fractions, the ethyl acetate (EtOAc) soluble fraction showed a noticeable inhibitory effect on mushroom tyrosinase with an $IC_{50}$ value of $37.6{\pm}0.1{\mu}g/mL$. Repeated column chromatography of the active EtOAc fraction resulted in the isolation of Fucofuroeckol-A. It evidenced more potent tyrosinase inhibitory effect with an $IC_{50}$ value of $11.4{\pm}1.4{\mu}M$ than arbutin ($IC_{50}=1076.6{\pm}44.3{\mu}M$), which was used as a positive control. Lineweaver-Burk plots suggest that Fucofuroeckol-A plays as a noncompetitive inhibitor against tyrosinase. Furthermore, we have evaluated the inhibitory effects of Fucofuroeckol-A on IBMX-induced melanin formation in B16F10 melanoma cells. Fucofuroeckol-A ($12.5-100{\mu}M$) exhibited a significant inhibition of melanin production in the melanoma cells. Conclusion: In the present study, we suggested that Fucofuroeckol-A might prove possibility as a novel inhibitor of melanin biosynthesis in cosmetic applications.

한약재로부터 Tyrosinase 저해제의 탐색 (Screeing of Tyrosinase Inhibitors from Oriental Herbs)

  • 서승염
    • 한국자원식물학회지
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    • 제14권1호
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    • pp.32-37
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    • 2001
  • 한약재 174종으로부터 tyrosinase 저해제를 탐색하였다. 한약재는 30일간 methanol에 담가 놓은 후, 그 추출액을 제조하여 사용하였다 Tyrosinase의 활성을 측정하기 위해서는 효소 mushroom Tyrosinase와 기질 L-DOPA, phosphate buffer를 사용하였다. 탐색 결과, 한약재 174종 중 14개종이 tyrosinase를 저해 효과를 보였고, 그중 오배자 추출액이 inhibition activity가 가장 높게 나타났다.

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Properties and Functions of Melanin Pigment from Klebsiella sp. GSK

  • Sajjan, Shrishailnath S.;Anjaneya, O;Kulkarni, Guruprasad B.;Nayak, Anand S.;Mashetty, Suresh B.;Karegoudar, T.B.
    • 한국미생물·생명공학회지
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    • 제41권1호
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    • pp.60-69
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    • 2013
  • Purified melanin pigment from Klebsiella sp. GSK was characterized by thermogravimetric, differential thermal, X-ray diffraction and elemental analysis. This melanin pigment is structurally amorphous in nature. It is thermally stable up to $300^{\circ}C$ and emits a strong exothermic peak at $700^{\circ}C$. Its carbon, hydrogen and nitrogen composition is 47.9%, 6.9% and 12.0%, respectively. It was used to scavenge metal ions and free radicals. After immobilizing the pigment and using it to adsorb copper and lead ions, the metal ion adsorption capacity was evaluated by atomic absorption spectroscopy (AAS) and the identity of melanin functional groups involved in the binding of metal ions was determined by Fourier transform infrared (FT-IR) spectroscopy. Batch adsorption studies showed that 169 mg/g of copper and 280 mg/g of lead were adsorbed onto melanin-alginate beads. The metal ion adsorption capacity of the melanin-alginate beads was relatively significant compared to alginate beads. The metal ion desorption capacity of HCl was greater (81.5% and 99% for copper and lead, respectively) than that of EDTA (80% and 71% for copper and lead, respectively). The ability of the melanin pigment to scavenge free radicals was evaluated by inhibition of the oxidation of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and was shown to be about 74% and 98%, respectively, compared with standard antioxidants.