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KMID : 0613820080180040474
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Journal of Life Science
2008 Volume.18 No. 4 p.474 ~ p.481
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Mineral Contents and Physiological Activities of Dried Sea Tangle (Laminaria japonica) Collected from Gijang and Wando in Korea
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Choi Jae-Suk
Shin Su-Hwa
Ha Yu-Mi
Kim Yang-Chun
Kim Tae-Bong
Park Sun-Mee
Choi In-Soon
Song Hyo-Ju
Choi Young-Ju
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Abstract
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This research was performed to determine the proximate compositions, mineral contents, alginic acid, antioxidative activities and amino acids of sea tangles collected from Gijang and Wando area. Crude protein and ash contents were higher in Gijang sea tangle, whereas carbohydrate and moisture were higher in Wando in general. Mineral contents of Gijang sea tangle were higher than Wando. Especially, Na and K was the most abundant in both Gijang and Wando sea tangles. Alginic acid content was almost similar in both sea tangles. The major free amino acids were glutamic acid, aspartic acid, alanine, proline and hydroxyproline in both Gijang and Wando sea tangles. Antioxidative activity of methanol extract of sea tangle was measured by using DPPH radical scavenging and SOD-like activity. DPPH radical scavenging and SOD-like activity were about 17% (40μg/mL ) and 7% (5μg/mL ) higher, respectively, in Wando sea tangle. When stimulate the macrophages RAW264.7 cells with lipopolysaccharide (LPS), inhibition of NO synthesis of the methanol extract was 11% higher in Wando sea tangle comparing with Gijang samples.
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KEYWORD
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Sea tangle, mineral contents, alginic acid, antioxidative activity, free amino acids
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