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KMID : 0903520060490040328
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2006 Volume.49 No. 4 p.328 ~ p.333
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Anti-oxidative Activities of Commercial Edible Plant Extracts Distributed in Korea
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Kim Kyung-Bum
Yoo Ki-Hwan
Park Ha-Yan
Jeong Jong-Moon
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Abstract
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Many plant extracts are known to have antioxidative effects. However, their activities can be reduced or disappeared during mass production process. The purpose of this study is to compare antioxidative effects of edible plant extracts distributed in Korea. Forty three kinds of edible plant extracts commercially available in Korea were selected and investigated for their total phenolics contents and antioxidative potentials (DPPH radical and superoxide anion radical scavenging activities). In contents of total phenolics, the commercial plant extracts from Artemisia annua (whole plant), Ilex paraguariensis (leaf), Silybum marianum (fruit and leaf), Ulmus pumila (bark), Coriolus versicolor (fruit), and Curcuma longa (root and stem) contained over 70 mg/g of powder. DPPH radical scavenging activities (SC50, 50% scavenging concentration) of A. annua, I. paraguariensis, Pinus densiflora (leaf), S. marianum, U. pumila, and C. longa were 53.96 ± 0.81 ppm, 24.61 ± 2.12 ppm, 35.96 ± 1.11 ppm, 57.46 ± 2.13 ppm, 55.25 ± 1.65 ppm and 12.99 ± 1.67 ppm, respectively, while that of positive control (vitamin C) was 3.86 ± 0.81 ppm. SC50 values against superoxide anion radical of A. annua, Cinnamomum zeylanicum (bark), I. paraguariensis, Rubus coreanus (fruit and leaf), Morus alba (leaf), P. densiflora, S. marianum, U. pumila, C. versicolor, C. longa, Perilla frutescens var. acuta (leaf), and H. sabdariffa (leaf and flower) were 53.21 ± 1.83 ppm, 50.12 ± 2.12 ppm, 5.59 ± 0.84 ppm, 41.60 ± 8.93 ppm, 20.19 ± 0.97 ppm, 15.19 ± 1.66 ppm, 21.20 ± 1.88 ppm, 15.71 ± 0.91 ppm, 55.48 ± 2.42 ppm, 52.12 ± 2.44 ppm, 23.80 ± 1.98 ppm and 11.14 ± 0.51 ppm, respectively (SC50 value of vitamin C: 9.61 ± 0.93 ppm). In particular, both I. paraguariensis and P. densiflora had high content of phenolics as well as high scavenging activities of DPPH radical and superoxide anion radical. Consequently, above two commercial extracts may be useful as a source of antioxidative nutraceutics.
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KEYWORD
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edible plant extracts, DPPH radical, superoxide anion radical
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