• Title/Summary/Keyword: tyrosinase 저해활성

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Effect of Light Emitting Diode Irradiation on Tyrosinase Activity during Storage (저장 중 발광다이오드 광 조사가 타이로시네이스 활성에 미치는 영향)

  • Jung, Hyo Yeon;Kim, Jung Sun;Noh, Bong Soo
    • Korean Journal of Food Science and Technology
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    • v.47 no.6
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    • pp.785-788
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    • 2015
  • In this study, the effect of light irradiation on tyrosinase activity during storage in a low temperature incubator was investigated, with the goal of identifying the appropriate wavelength and intensity of light for inhibiting tyrosinase activity. Fluorescent light and blue light emitting diode (LED) irradiation were found to inhibit tyrosinase activity. In particular, tyrosinase activity was significantly inhibited under high intensity blue LED irradiation, suggesting that the activity of tyrosinase present in vegetables or fruits might be inhibited by LED irradiation. Therefore, blue LED irradiation during food storage and the distribution stage would be useful for ensuring good quality of food, owing to the inhibition of the enzymatic browning reaction.

Antioxidant Effects and Tyrosinase Inhibition Activity of Extract of Prunus sargentii Rehder (화피(樺皮)의 항산화 효과 및 tyrosinase 저해활성)

  • An, Bong-Jeun;Cho, Young-Je;Son, Jun-Ho;Park, Jung-Mi;Lee, Jin-Young;Park, Tae-Soon
    • Applied Biological Chemistry
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    • v.49 no.2
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    • pp.145-148
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    • 2006
  • Biological activities and application of Prunus sargentii Rehder were investigated. In the physiological activities, the electron donating ability (EDA) of ethanol extracts of Prunus sargentii Rehder was 85% in 100 ppm. SOD-like activity was inhibition about 50% in 1,000 ppm, it was gradual increased. As inhibitory effect of xanthine oxidase, it was more than 70% in 1,000 ppm and inhibitory effect of tyrosinase was a little low as 20% below 1,000 ppm.

Inhibitory Effect of Endarachne binghamiae Extract on Melanin Synthesis (미역쇠(Endarachne binghamiae)추출물의 멜라닌 생성 억제 효과)

  • Jeon, Youngsic;Jung, Yujung;Youm, Jong-Kyung;Kim, Yong Kee;Kim, Su-Nam
    • Korean Journal of Plant Resources
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    • v.26 no.5
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    • pp.526-532
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    • 2013
  • In this study, we investigated the effect of 88 marine algae extracts on melanin synthesis to develop new whitening agents. Among varieties of marine algae tested, the ethyl acetate extracts from Endarachne binghamiae (EB), Scytosiphon lomentaria, Sargassum yezoense, Ecklonia cava and Sargassum fusiforme inhibited melanin synthesis in melan-a cells. EB treatment showed the strongest inhibitory activity in melanin synthesis, compared with that of other extracts. EB-mediated inhibition of melanin synthesis appeared to be associated with inhibition of ${\alpha}$-glucosidase-dependent glycosylation of tyrosinase in melan-a cells. In addition, EB treatment did not affect mushroom tyrosinase or cell-extracted tyrosinase activity in vitro. Taken together, our findings suggest that anti-browning effect of EB on skin is mediated through regulation of ${\alpha}$-glucosidase activity and subsequent inhibition of tyrosinase activity and melanin synthesis, and further development of EB as a potential agent for skin whitening.

Antioxidant and tyrosinase inhibitory activities of immature fruits of Malus pumila cv. Fuji (미성숙 사과의 항산화 및 tyrosinase 저해 활성 평가)

  • Kwon, O Jun
    • Food Science and Preservation
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    • v.23 no.4
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    • pp.585-590
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    • 2016
  • In this study, the antioxidant and tyrosinase inhibitory activities of aqueous ethanolic extract from the immature fruits of Malus pumila cv. Fuji were evaluated. The antioxidant capacities of the extract was investigated employing radical scavenging assays using DPPH and $ABTS^+$ radicals. The skin-whitening effect of M. pumila cv. Fuji extract was tested using mushroom tyrosinase assay. In addition, the total phenolic content was measured by a spectrophotometric analysis. All tested samples showed a dose-dependent radical scavenging and tyrosinase inhibitory activities. Among the tested samples, the ethyl acetate (EtOAc)-soluble portion from the immature fruits of M. pumila cv. Fuji was showed the significant DPPH and $ABTS^+$ radicals scavenging activities. Also, the tyrosinase inhibitory activity of the ethyl acetate (EtOAc)-soluble portion from immature apples was higher than other solvent-soluble portion. These results suggest that unripe fruits of M. pumila cv. Fuji could be considered as a new valuable source of natural antioxidant and skin-whitening agents. Systematic investigation of immature fruits of Malus pumila cv. Fuji will be performed for the further development of its biological properties.

Screening of Tyrosinase Inhibitor from Plants (Tyrosinase 활성을 저해하는 식물체의 탐색)

  • Jung, Sung-Won;Lee, Nam-Kyung;Kim, Seok-Joong;Han, Dae-Seok
    • Korean Journal of Food Science and Technology
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    • v.27 no.6
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    • pp.891-896
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    • 1995
  • In order to screen natural inhibitor of tyrosinase which catalyzes an enzymatic browning of some foods and in vivo synthesis of melanin, inhibitory effect of 129 edible plants and 15 chemical compounds on the in vivo melanin synthesis by mushroom tyrosinase was analyzed. Among leafy vegetables tested, radish bud, red chicory, Shepherd's purse and small green onion were found to have more than 50% tyrosinase inhibition effect in the descending order. Chinese radish and garlic in root vegetables, and nameko, shiitake and oyster mushroom in mushrooms, and teas showed also more than 50% inhibition effect. Among fruit vegetables tested, red pepper, Chinese quince and avocado were found to have more than 50% tyrosinase inhibition effect, while fruits generally showed low inhibitory effect. Medicinal plants which inhibit tyrosinase more than 50% were mume fructus>cinamomi ramulus>rubi fructus>mori cortex>biotae orientalis folium>puerariae radix, and herbs with more than 50% inhibitory effect were allspice>clove>mustard. In some chemical compounds tested, 4-hexylresorcinol, L-cysteine, glutathione, sodium bisulfite and kojic acid showed powerful inhibition effect on mushroom tyrosinase.

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Evaluation of 1,1-Diphenyl-2-Picrylhydrazyl Radical Scavenging Effect, Cytotoxicity and Tyrosinase Inhibition Activities in 4 Species of Herb Plants (허브 식물 4종의 1,1-Diphenyl-2-Picrylhydrazyl 라디칼 소거능, 세포 독성 및 tyrosinase 저해활성 검정)

  • Park, Hye-Won;Jang, Ka-Hee;Hussain, Mubshar;Lee, Dong-Jin
    • Journal of Applied Biological Chemistry
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    • v.55 no.4
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    • pp.201-205
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    • 2012
  • The present study was conducted to evaluate of the 1,1-Diphenyl-2-Picrylhydrazyl (DPPH) radical scavenging effect, cytotoxicity and tyrosinase inhibition activities using methanol extracts from different parts of four herb plants. The results showed that whole and root extracts of yarrow the highest total polyphenol and flavonoid contents as well as whole of yarrow revealed the highest DPPH radical scavenging effect. In cytotoxicity test against three cancer cell lines, HeLa (uterus), SK-Hep-1 (liver), and YD-15 (oral), the whole extract of feverfew showed the highest toxicity with $IC_{50}$ values of $102.58-138.68{\mu}g/mL$. Also, mallow root extract ($71.24{\mu}g/mL$) exhibited potent tyrosinase inhibitory activity comparable to arbutin ($69.56{\mu}g/mL$), which was used as the control.

Application of Isolated Tyrosinase Inhibitory Compounds from Persimmon Leaves (감나무 잎으로 부터 분리한 tyrosinase 억제물질의 응용)

  • Cho, Young-Je;An, Bong-Jeun;Kim, Jeung-Hoan
    • Journal of Life Science
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    • v.21 no.7
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    • pp.976-984
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    • 2011
  • Total phenolic content was the highest in 60% ethanol extracts at 21.91 mg/g, and inhibitory activity against tyrosinase of 60% ethanol extracts was higher than ethanol extracts of other concentration. The inhibitory compounds against tyrosinase from Persimmon leaves were purified using Sephadex LH-20, MCI-gel CHP-20 column chromatography with gradient elution. Two purified compounds were isolated as a result. The chemical structures of each compound were determined and identified using $^1H$-NMR and $^{13}C$-NMR, FAB-Mass. The compounds were confirmed as (+)-gallocatechin and prodelphinidin B-3. The tyrosinase inhibitory activities of purified (+)-gallocatechin and prodelphinidin B-3 were 29.5 and 40.2%, respectively. The inhibitory activities of (+)-gallocatechin and prodelphinidin B-3 against melanin biosynthesis in melanoma cell were 32.5 and 46.7%. The safety of essence with tyrosinase inhibitory compounds from persimmon leaves was also assessed by various safety profiles. First, changes in pH (4.90~4.95) and viscosity (23,000~26,000 cP) was not detected for 60 days. Essence also showed stability against temperature and light for 60 days. All these findings suggest that extracts from persimmon leaves have a great potential as a cosmetical ingredient with a potent whitening effect.

Inhibitory Effect of Gardenia Fruit Extracts on Tyrosinase Activity and Melanogenesis (치자 열매 추출물의 Tyrosinase 효소활성 저해 및 Melanogenesis 억제 효과)

  • Kwak Jung-Hoon;Kim Yong-Hae;Chang Hae-Ryong;Park Chul-Woo;Han Yeong-Hwan
    • KSBB Journal
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    • v.19 no.6 s.89
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    • pp.437-440
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    • 2004
  • To determine the inhibition of tyrosinase activity and melanogenesis, gardenia fruit was extracted initially with $95\%$ ethanol (w/v), The ethanol extract was fractionated subsequently with hexane, chloroform and ethyl acetate in that order. The inhibitory effect of the ethanol extract on tyrosinase activity was higher than water extract. When 10 mg/mL of ethyl acetate fraction was applied, the inhibition ratio of tyrosinase activity was much higher ($99.7{\pm}0.1\%$) than that of arbutin. The inhibition of melanogenesis using B16F10 melanoma cell, the ethanol extract also showed higher inhibitory effect than water extract. The highest inhibitory activity of melanogenesis was also shown in ethyl acetate fraction ($89.1{\pm}1.4\%$ at the cone. of $100\;{\mu}g/mL$). These results suggests that gardenia extracts might be used to be a potential agents for whitening.

Antioxidant Activity and Tyrosinase Inhibition Effect of Makgeolli Using Mistletoe Cultivated on Prunus mume (매실나무(Prunus mume) 겨우살이 막걸리의 발효기간 및 겨우살이 함량 차이에 따른 항산화활성 및 Tyrosinase 저해활성)

  • Heo, Jeong Won;Kwon, You Jin;Azad, Md Obyedul Kalam;Park, Cheol Ho
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2018.04a
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    • pp.87-87
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    • 2018
  • 매실나무겨우살이 막걸리의 생리적 효능을 검정하여 의약 화장품의 소재화 가능성을 검토할 목적으로 발효기간과 겨우살이 함량에 따른 총 폴리페놀, 플라보노이드 함량, DPPH free radical 소거능을 측정하였고, tyrosinase 저해활성은 5분 간격으로 65분간 측정하였다. 막걸리는 백미와 기장을 7:3의 비율로, 겨우살이의 함량을 0%, 5%, 10%로 달리하여 10일 간격으로 최대 30일까지 Shaking incubator($30{\sim}35^{\circ}C$, 100 rpm)에서 발효하였고, 발효가 끝난 막걸리는 80 mesh 망으로 여과하였다. 총 폴리페놀 함량은 10일에 최대치를 나타내었고, 0%는 $633.53{\mu}g/ml$, 5%는 $759.67{\mu}g/ml$, 10%는 $752.2{\mu}g/ml$을 나타내었다. 기간이 경과함에 따라 감소하는 경향이었으며 30일에 0%는 $507.57{\mu}g/ml$, 5%는 $570.13{\mu}g/ml$, 10%는 $551{\mu}g/ml$를 함유하고 있는 것으로 나타났다. 총 플라보노이드 함량 또한 10일에 최대치를 나타내었고, 0%는 $16.18{\mu}g/ml$, 5%는 $63.87{\mu}g/ml$, 10%는 $62.99{\mu}g/ml$였고, 기간이 경과함에 따라 감소하는 경향성을 나타내어 30일에 0%는 $0.59{\mu}g/ml$, 5%는 $10.98{\mu}g/ml$, 10%는 $1.18{\mu}g/ml$를 함유하였다. DPPH free radical 소거능은 0%의 경우 10일에 72.34%로 최대치가 나타났고, 30일에 58.61%로 가장 낮은 소거능을 보여주어 기간이 경과함에 따라 감소하는 경향성을 보여주었다. 하지만, 겨우살이 첨가군인 5%(10일:91.13%, 20일:91.09%)와 10%(10일:91%, 20일:90.8%)는 비교적 차이가 없었고, 발효기간이 30일이 경과한 후 5%는 93.46%, 10%는 92.3%로 최대값을 보여주었다. Tyrosinase 저해활성은 DPPH free radical 소거능이 가장 좋은 30일 발효 막걸리를 측정하였다. 모든 겨우살이 첨가군에서 5분이 경과하였을 때, 0%는 82.68%, 5%는 69.29%, 10%는 79.53%의 저해활성을 나타내었으며, 시간에 유의적으로 저해활성이 감소하였다. 본 연구 결과에 따르면, 겨우살이 막걸리의 총 폴리페놀과 플라보노이드 함량은 기간이 경과함에 따라 감소함에도 불구하고, DPPH free radical 소거능은 증가함을 알 수 있었다. Tyrosinase 저해활성은 5% 첨가 막걸리에서 가장 낮았으며, 겨우살이를 첨가하지 않은 0%에서 가장 저해활성이 높고 오랜시간 유지되는 것을 확인할 수 있었다.

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The Roles of Hydroxyl Substituents in Tyrosinase Inhibitory Activation of Flavone Analogues (Flavone 유도체들의 Tyrosinase 저해활성화 반응에서 Hydroxyl 치환기들의 역할)

  • Park, Joon-Ho;Sung, Nack-Do
    • Journal of Applied Biological Chemistry
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    • v.54 no.1
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    • pp.56-62
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    • 2011
  • Molecular docking of polyhydroxy substituted flavone analogues (1-25) as substrate molecules to the active site of tyrosinase (PDB ID: Deoxy-form (2ZMX) & Oxy-form (1WX2)) and Free-Wilson analysis were studied to understand the roles of hydroxyl substituents ($R_1-R_9$) in substrate molecules for the tyrosinase inhibitory activation. It is founded from Free-Wilson analysis that the $R_1$=hydroxyl among $R_1-R_9$ substituents had the strongest influence on the tyrosinase inhibitory activity. H-bonds between the hydroxyl substituents of substrate molecules and amino acid residues in the active site of tyrosinase were contributed to make a stable substrate-receptor complex compound. Particularly, it is proposed from the findings that the noncompetitive inhibitory activation would take place via H-bonding between peroxide oxygen (Per404) atom in the active site of tyrosinase and the hydroxyl substituents in substrate molecule.