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http://dx.doi.org/10.15230/SCSK.2011.37.4.357

Antioxidative Effect and Tyrosinase Inhibitory Activity of Rheum undulatum L. Extracts  

Kim, Jung-Eun (Department of Fine Chemistry, Nanobiocosmetic Lab., Cosmetic R&D Center, College of Nature and Life Science, Seoul National University of Science and Technology)
Park, Chan-Ha (Hansung Science High School)
Oh, Dae-Seok (Hansung Science High School)
Lee, Seung-Yeon (Hansung Science High School)
Jang, Se-Hun (Hansung Science High School)
Hong, Jee-Yeon (Hansung Science High School)
Min, Hye-Jin (Department of Fine Chemistry, Nanobiocosmetic Lab., Cosmetic R&D Center, College of Nature and Life Science, Seoul National University of Science and Technology)
Park, Su-Ah (Department of Fine Chemistry, Nanobiocosmetic Lab., Cosmetic R&D Center, College of Nature and Life Science, Seoul National University of Science and Technology)
Won, Doo-Hyun (Department of Fine Chemistry, Nanobiocosmetic Lab., Cosmetic R&D Center, College of Nature and Life Science, Seoul National University of Science and Technology)
Park, Soo-Nam (Department of Fine Chemistry, Nanobiocosmetic Lab., Cosmetic R&D Center, College of Nature and Life Science, Seoul National University of Science and Technology)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.37, no.4, 2011 , pp. 357-363 More about this Journal
Abstract
In this study, the antioxidative effects and inhibitory activities on tyrosinase of Rheum undulatum (R.undulatum) L. extracts were investigated. 50 % ethanol extract, ethyl acetate and aglycone fractions of R. undulatum L. were used in experiments. The DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging activities ($FSC_{50}$) of R. undulatum L. extracts was lower than (+)-${\alpha}$-tocopherol, known as a typical antioxidant. Reactive oxygen species (ROS) scavenging activities ($OSC_{50}$) of aglycone fraction on ROS generated in $Fe^{3+}$-EDTA/$H_2O_2$ system using the luminol-dependent chemiluminescence assay showed the most prominent effect at a concentration of $0.265\;{\mu}g/mL$. The cellular protective effects of extract/fractions of R. undulatum L. on the rose-bengal sensitized photohemolysis of human erythrocytes were increased in a concentration dependent manner ($1{\sim}50\;{\mu}g/mL$). Especially, aglycone fraction in $10\;{\mu}g/mL$ concentration showed the most protective effect among extracts (${\tau}_{50}$, 757.0 min). The inhibitory effects ($IC_{50}$, $11.20\;{\mu}g/mL$) on tyrosinase of aglycone fraction was much higher than arbutin ($226.88\;{\mu}g/mL$), known as a whitening agent. These results indicate that R. undulatum L. extracts can be used as antioxidant. Particularly, aglycone fraction of R. undulatum L. showed superior antioxdative activity and high inhibitory effect on tyrosinase. Therefore, aglycone fraction of R. undulatum L. could be applicable to new functional cosmetics.
Keywords
R. undulatum L.; antioxidative activity; tyrosinase; cosmetics;
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Times Cited By KSCI : 6  (Citation Analysis)
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