• 융합정보논문지
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• 제11권9호
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• pp.115-123
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• 2021

본 연구는 산말 3종류 Desmarestia dudresnayi subsp. Tabacoides (담배잎산말), Desmarestia viridis (쇠꼬리산말), Desmarestia ligulate (참산말) 잎 추출물의 항산화 및 항 멜라닌 활성에 대한 기능적 연구를위해 수행하였다. 3종류의 산말 중 담배잎산말 추출물이 2.5 mg / mL의 농도에서 DPPH 및 ABTS 라디칼 소거활성이 각각 68.0 % ± 1.9 % 및 84.6 % ± 1.7 %로 강한 항산화력을 나타냈다. 질소 (NO) 라디칼 소거 활성은 91.6 % ± 1.1 %의 높은 항산화능을 보였다 산말 추출물을 이용한 B16F10세포의 세포독성은 100 ㎍/mL 농도에서 3종의 산말 추출물이 모두 85% 이상의 세포 생존률을 보였고, 100 ㎍ / mL농도에서 담배잎산말 및 쇠꼬리산말이 70% 이상의 멜라닌 억제효과를 보였다. 이러한 내용은 산말이 항산화 및 항멜라닌 활성과 같은 천연 화장품 소재로 사용될 수 있을 것으로 사료된다.

• Food Science and Biotechnology
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• 제18권3호
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• pp.813-817
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• 2009

The effect of 4 seaweed extracts (Desmarestia viridis, Dictyopteris divaricata, Scytosiphon lomentaria, and Ishige okamurae) on pro-inflammatory mediators as well as nuclear factor $(NF)-{\kappa}B$ in the stimulated Raw 264.7 cells was investigated. They reduced iNOS and interlukin $(IL)-1{\beta}$ expressions at transcription level. Of those, 3 extracts (D. divaricata, I. okamurae, and S. lomentaria) inhibited the COX-2 expression at translation level. $I{\kappa}B-{\alpha}$ degradation was inhibited by D. divaricata and S. lomentaria extracts. Therefore, we concluded that the extracts from D. divaricata and S. lomentaria could inhibit the activation of murine macrophage through the blocking of $NF-{\kappa}B$ activation.

• Food Science and Biotechnology
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• 제17권3호
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• pp.613-622
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• 2008

Cancer chemopreventive effects can be exerted through the induction of phase II detoxification enzymes and the inhibition of inflammatory responses. In this study, the cancer chemopreventive effects and anti-inflammatory responses of 30 seaweed extracts were examined. The extracts of Dictyota coriacea and Cutleria cylindrica exhibited the high chemoprevention index, having 4.36 and 4.66, respectively. They also activated antioxidant response element at $100\;{\mu}g/mL$ by about 3-fold while did not activate xenobiotic response element. Seven seaweed extracts, Ishige okamurae, Desmarestia ligulata, Desmarestia viridis, Dictyopteris divaricata, D. coriacea, Sargassum horneri, and Sargassum yezoense, showed significant inhibition on nitric oxide (NO) and prostaglandin $E_2$ ($PGE_2$) production in a dose-dependant manner in $5-20\;{\mu}g/mL$. These seaweed extracts could be used as food materials for cancer chemoprevention. D. coriacea could contain potential chemopreventive agents not only that regulate genes via an ARE-dependent mechanism but also prevent the inflammation through inhibition of NO and $PGE_2$ production.

• 한국해양학회지:바다
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• 제19권3호
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• pp.191-201
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• 2014

한국 동해안 울진군에 위치한 왕돌초 조하대에서 2012년 5월부터 2013년 8월까지 계절별로 해조상 및 군집구조에 관한 연구를 수행하였다. 연구기간 동안 녹조류 12종, 갈조류 29종, 홍조류 81종을 포함한 122종이 채집 및 동정되었으며, 38종의 해조류는 조사지역에서 연중 출현하였다. 정점별 평균 생물량은 봄 472.19-1,198.77 g wet wt. $m^{-2}$, 여름 68.99-631.14 g wet wt. $m^{-2}$, 가을 200.91-401.20 g wet wt. $m^{-2}$, 겨울 53.61-922.32 g wet wt. $m^{-2}$로 나타났다. 생물량에 근거한 왕돌초 해조류의 수직분포는 상부 개도박(Grateloupia lanceolata), 넓은분홍잎(Acrosorium venulosum), 마디잘록이(Lomentaria catenata), 중부 미역(Undaria pinnatifida), 참가시그물바탕말(Dictyopteris pacifica), 괭생이모자반(Sargassum horneri), 감태(Ecklonia cava), 하부 쇠꼬리산말(Desmaeistia viridis), 감태(E. cava), 괭생이모자반(S. horneri) 순으로 확인되었다. 왕돌초에서 출현한 해조류를 6가지 기능형군에 따라 구분한 결과 사상형 34.43%, 성긴분지형 25.41%, 엽상형 24.59%, 다육질형 9.71%, 각상형 5.74%, 유절산호말형 0.82%로 확인되었다. 해조상의 특성을 반영하여 해조군락 특성을 판단할 수 있는 C/P, R/P, (R+C)/P 값은 각각 0.41, 2.79, 3.21로 나타났다. 또한, 왕돌초 조하대 군집 안정도와 환경상태를 다양도지수(H')와 우점도지수(DI)를 기초로 확인한 결과 안정된 것으로 나타났다. 왕돌초 조하대에 서식하는 해조류 종다양성 및 풍부도를 유지하기 위하여 교란이나 부영양화 같은 인간활동으로부터 보호되어야 할 것으로 판단된다.

• ALGAE
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• 제30권2호
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• pp.139-146
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• 2015

Urchin barrens have been a major issue of rocky coastal ecosystems in temperate regions. In South Korea, the east coast and Jeju Island have especially been a focus because the area of barren ground increases in spite of continual efforts to install artificial reefs. This study approached the urchin barrens issue in South Korea, by focusing on a correlational analysis of urchin and macroalgal abundance. Urchin density and algal species coverage were obtained using a quadrat image analysis. Subtidal sites were then classified into three groups according to the average densities of urchins to evaluate the characterization of the macroalgal community: no urchin (NU) zone; transition (TR) zone, $4inds.\;m^{-2};$ and urchin (UR) zone, ${\geq}8inds.\;m^{-2}$. The average urchin density in the study site was $4.7inds.\;m^{-2}$ and 57 macroalgal species were found in the study site. From the NU zone to UR zone, total species number, species diversity index and evenness gradually decreased, whereas the dominance index increased. The algae species with negative correlations were Grateloupia divaricata, Polysiphonia morrowii, Chondracanthus intermedius, Delesseria violacea, Desmarestia viridis; and those with positive correlations were the crustose corallines, Sargassum horneri. Other species were not significantly correlated with urchin density. The significant correlations indicate that the abundance of some macroalgal species is proportionally regulated by sea urchin density. This study also shows how macroalgal vegetation changes in response to an urchin's density gradient in a natural condition; and there is a TR zone that existed with respect to an intermediate level of algal abundance.