소리쟁이(Rumex crispus L.) 뿌리 추출물의 항산화 및 광피해 억제 효과 = Antioxidant and photoprotective activities of various extracts from the roots of Rumex crispus L.

다국어 초록 (Multilingual Abstract)

The antioxidant and photoprotective effects of various extracts from the roots of Rumex crispus L. were evaluated. The concentrations (IC50) of various extracts required to exert a 50% reducing effect on a DPPH radical were found to be 0.005~0.093 mg/mL. The ethyl acetate extract showed a more remarkable effect than the positive control ascorbic acid. The concentrations (QC50) of the butanol and ethyl acetate extracts required to exert a 50% reducing effect on the singlet oxygen 1O2 were found to be 0.464 and 0.365 mg/mL, respectively. Both extracts were also found to protect the in vitro biological system from the detrimental effect of a singlet oxygen 1O2 on type II photosensitization in E. coli and genomic DNA. Among all the tested extracts, the ethyl acetate and butanol extracts contained higher amounts of total phenolic contents. The results suggest that our study may contribute to the development of new bioactive products with potential applications to the reduction of photo-produced oxidative stress involving reactive oxygen species in living organisms.

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