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http://dx.doi.org/10.12925/jkocs.2017.34.2.236

Antioxidant activities of Citrus junos seed shell extract and fractions cultivated in Korea  

Kim, A Young (Department of Fine Chemistry, Cosmetic R&D Center, Seoul National University of Science and Technology)
Jeong, Hyo Jin (Department of Fine Chemistry, Cosmetic R&D Center, Seoul National University of Science and Technology)
Park, Soo Nam (Department of Fine Chemistry, Cosmetic R&D Center, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Applied Science and Technology / v.34, no.2, 2017 , pp. 236-243 More about this Journal
Abstract
In the present study, 70% ethanol extract, the ethyl acetate fraction were prepared from citron (Citrus junos)seed and their antioxidative ability was evaluated. The yields of extract and fractions were 5.1 and 0.9% per dried powder, respectively. In the 1,1-Phenyl-2-picrylhydrazyl (DPPH) radical test, free radical scavenging activities ($FSC_{50}$) of 70 % ethanol extract, ethyl acetate fraction were 512.1 and $514.0{\mu}g/mL$, respectively. Evaluation of total antioxidant capacities ($OSC_{50}$) using $Fe^{3+}$-EDTA system. Their $OSC_{50}$ of ethyl acetate fraction were $86.5{\mu}g/mL$. this antioxidant capacities higher than that of 70% ethanol extract. but lower than that of L-ascorbic acid ($1.72{\mu}g/mL$), known as a prominent water soluble antioxidant. The cellular protective effects on the $^1O_2$-induced cellular damage of rabbit erythrocytes were evaluated and the results showed that the extract was lower than (+)-${\alpha}$-tocopherol and low concentration of ethyl acetate fraction was similar to (+)-${\alpha}$-tocopherol. but not at high concentrations of ethtyl acetate fraction. it was able to induce cellular damage at high concentration.
Keywords
Citrus junos seed; reactive oxygen species; antioxidative activity; cellular protective effect;
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