Tyrosinase
Mostrando 1-12 de 207 artigos, teses e dissertações.
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1. Silica/Titania Graphite Composite Modified with Chitosan and Tyrosinase Employed as a Sensitive Biosensor for Phenolic Compounds
A mesoporous, high surface area and conductive silica/titania graphite composite modified with chitosan and functionalized with tyrosinase was prepared. The composite was obtained by the sol-gel method and the surface of the resultant material was modified with chitosan solutions containing 5, 10 and 15% by mass. The textural characterization showed that eve
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. The Anti-melanogenesis Activities of Some Selected Brown Macroalgae from Northern Coasts of the Persian Gulf
Abstract Melanogenesis is a biological process which led to the synthesis of melanin pigment. Abnormal melanin production results in melasma, solar lentigo, post inflammatory melanoderma, etc. In this study, we examined the potential inhibitory effects of 17 brown macroalgae from Persian Gulf on melanogenesis. The effects of various concentrations (100, 250
Braz. arch. biol. technol.. Publicado em: 13/06/2019
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3. Molecular detection of albinism gene in Brazilian buffalo herds (Bubalus bubalis)
RESUMO: O Albinismo é uma doença genética caracterizada pela deficiência na produção de melanina, o que torna os animais afetados mais susceptíveis a problemas cutâneos e influencia negativamente a criação destes animais. A mutação nonsense (c.1431G>A) no gene da tyrosinase já foi descrita como responsável pelo albinismo oculocutâneo em búfal
Pesq. Vet. Bras.. Publicado em: 2019-03
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4. Enzyme activity and biochemical changes during production of Lentinula edodes (Berk.) Pegler
Abstract Shiitake is an important edible and medicinal mushroom cultivated worldwide. Its cultivation involves a complex process of browning that precedes the primordia initiation. The present work through the evaluation of enzymes, lectin and β-glucan during the cultivation cycle of Lentinula edodes, the degradation of cellulose, hemicellulose and lignin,
Food Sci. Technol. Publicado em: 07/01/2019
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5. Enzyme activity and biochemical changes during production of Lentinula edodes (Berk.) Pegler
Abstract Shiitake is an important edible and medicinal mushroom cultivated worldwide. Its cultivation involves a complex process of browning that precedes the primordia initiation. The present work through the evaluation of enzymes, lectin and β-glucan during the cultivation cycle of Lentinula edodes, the degradation of cellulose, hemicellulose and lignin,
Food Sci. Technol. Publicado em: 20/12/2018
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6. Chemo-Preventive Functions of Grape Seed Proanthocyanidin Extract against UV-Induced Intracellular Oxidative Stress and Tyrosinase Activity
Clinical studies have identified that an excessive exposure of UV light can cause oxidative stress (OS) and tyrosinase enzyme over-expression, which are associated with multiple diseases including atherosclerosis, cancers, diabetics, rheumatoid arthritis. In this study, we investigated the impact of grape seed proanthocyanidin (GSPE) on regulating OS and tyr
J. Braz. Chem. Soc.. Publicado em: 2018-08
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7. Improved antimelanogenesis and antioxidant effects of polysaccharide from Cuscuta chinensis Lam seeds after enzymatic hydrolysis
Cuscuta chinensis polysaccharide (CPS) was extracted using hot water and enzymatically hydrolyzed C. chinensis polysaccharide (ECPS) was produced by the mannase enzymatic hydrolysis process. The purpose of this research was to investigate the antimelanogenic activity of ECPS and CPS in B16F10 melanoma cells. The in vitro antioxidant activity was assessed by
Braz J Med Biol Res. Publicado em: 28/05/2018
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8. Simultaneous Determination of Different Phenolic Compounds Using Electrochemical Biosensor and Multivariate Calibration
Phenolic compounds are important environmental contaminants due to their high toxicity and persistence in the environment. The use of enzyme-based electrochemical biosensors is a simple, sensitive and low-cost alternative for the determination of these pollutants in contaminated waters. However, in most cases, it is impossible to detect specific compounds in
J. Braz. Chem. Soc.. Publicado em: 2018-03
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9. An overview of dermatological and cosmeceutical benefits of Diospyros kaki and its phytoconstituents
Abstract Diospyros kaki L.f. belonging to family Ebenaceae, commonly known as persimmon is used as a medicinal plant in Chinese traditional medicine since many years for different ailments including cosmetics and dermatologic applications. Traditionally this plant is used to treat different skin conditions including pimples, skin eruptions and eczema. Presen
Rev. bras. farmacogn.. Publicado em: 2017-10
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10. Caracterização genética de genes para cor da pelagem do núcleo de conservação da ovelha Crioula no Brasil
Resumo: O objetivo deste trabalho foi identificar polimorfismo de nucleotídeo único (SNPs) em dados de ressequenciamento dos genes MC1R, ASIP e TYRP1, obtidos de ovelhas Crioulas (Ovis aries) com cores de pelagem distintas. Polimorfismos nos genes ASIP (agouti-signaling protein), MC1R (melanocortin 1 receptor) e TYRP1 (tyrosinase-related protein 1) foram a
Pesq. agropec. bras.. Publicado em: 2017-08
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11. In vitro and cellular activities of the selected fruits residues for skin aging treatment
ABSTRACT Peel extracts of litchi and rambutan, and that of tamarind seed coat were investigated in relation to their utility in skin-aging treatments. Standardized extracts of tamarind were significantly (p < 0.05) more efficient at O2 •- scavenging (IC50 = 27.44 ± 0.09) than those of litchi and rambutan (IC50 = 29.57 ± 0.30 and 39.49 ± 0.52 μg/ml, res
An. Acad. Bras. Ciênc.. Publicado em: 22/05/2017
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12. Effects of Acmella oleracea methanolic extract and fractions on the tyrosinase enzyme
Abstract The aim of the current study is to evaluate the effect of Acmella oleracea (L.) R.K. Jansen, Asteraceae, methanolic extract, hexane (84.28% spilanthol) and dichloromethane (approximately 100% spilanthol) fractions on the tyrosinase enzyme. The dehydrated jambu extract was obtained through maceration using methanol. The extract residue was solubilize
Rev. bras. farmacogn.. Publicado em: 2016-06