• Korean Journal of Environment and Ecology
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• v.28 no.6
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• pp.613-626
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• 2014

Seaweeds were identified after qualitative sampling at 14 stations of Dokdo coasts from May to July 2013 and seaweeds and animals inhabiting 23 Eisenia bicyclis plants were examined to evaluate its ecological role. Biomass was calculated by using regression between stipe length and weight of E. bicyclis. A total of 128 species were identified, including 18 green, 35 brown, and 75 red algae. Coarsely branched form was dominant functional group occupying 47.66% and 91 species (71.09%) were in ESG I group, growing in stable environmental coast. Also, R/P, C/P, and (R+C)/P were 2.14, 0.51, and 2.66, respectively showing temperate and mixed flora. Biomass and density of E.bicyclis were $23.74kg\;m^{-2}$ and 64 fronds $m^{-2}$. Twelve seaweeds and 83 animal species (15 Annelida, 25 Mollusca, 34 Arthropoda, 3 Echinodermata, and 6 others) were observed from 23 holdfasts and Ericthonius pugnax was dominant taxon having 538 (43.11%) of 1,248 animal individuals. These results indicate that E.bicyclis is a keystone species showing very important ecological role. In conclusion, the number of seaweeds increased because of intensive research and dominance of coarsely branched form and ESG I group seaweeds, representing that environmental condition of Dokdo is still intact.

• Journal of Navigation and Port Research
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• v.28 no.6
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• pp.573-578
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• 2004

The most important effects on algae multiplication are coming from maintaining the growth environment such as necessary nutrients and proper temperature, but it is difficult to adjust for every species individually. In this study, therefore, the environment is obtained using the local water where target organisms live, and their growth is promoted by raising the water temperature. A sensor to count the organism population is developed here. Because the early stage of a sudden increase of the algae population is detected using the sensor, it is available to predict the sudden increase of algae, a source of red tide.

• Journal of Marine Bioscience and Biotechnology
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• v.2 no.3
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• pp.133-141
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• 2007

There are produced more than 600,000 tons of seaweeds every year along the coast of the Korea. Jeonnam province, south-west coast area, of Korea is producing 93% of total amounts of seaweeds. The laver, sea mustard, and tangleweed maintain stability in the output and has been exported as a simple product processing through drying or salting. It was evaluated the low value-added products and limited the expansion for the consumption of seaweeds. The seaweeds contains 40-60% carbohydrate and structurally different compared with land plant. The dietary fiber from seaweeds has been known the function of facilitating the bowl movement, excretion the heavy metal in the body, lowering the blood cholesterol level, anti-coagulant of blood, and anticancer. Especially, brown algae including sea mustard, seaweed fusiforme, and tangleweed contains alginic acid, laminarin, mannitol, fucoidan which are lowering the blood cholesterol level, lowering blood pressure, and fusion of blood clot. Agar-agar, carrageenan, and porphyran compound in red algae are known to antimutagenicity and anticoagulant function. In spite of potential of seaweed as a main bio-resource, there are lack of research to facilitate the consumption with its functional properties and consumers are unsatisfied with simple processing products. Also, the seaweed by-product dump into the sea and cause pollution of the seawater. Therefore, there are needed the scheme to promote the consumption of seaweeds. The development of value-added products, finding functional properties from seaweeds, development the functional feed for animal using seaweed by-products, and utilization of unused algae for food or other industrial uses will increase fisherman's income as well as serve as an aid for the people health due to its functional properties. Using by-product of seaweed and unexploited seaweed are needed to development of bio-degradable food packaging material and functional feed for animal.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2004.07a
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• pp.44-44
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• 2004

미량성분들이 균형있게 함유되어 있으며 다양한 기능성을 갖는 해조류는 식생활 수준의 향상 및 건강 추구의 욕구와 부합하여 점차 그 이용분야가 확대되고 있다. 본 연구에서는 진두발, 갈래곰보 꼬시래기, 돌가사리, 고장초 및 톳의 성분을 분석하여 이들 해조류에 대한 식품학적인 기초자료를 얻고자 하였다. 회분은 시료간의 함량차가 심하여 꼬시래기의 경우 9.8 g/100g였으나 톳은 22.7 g/100g으로 가장 높은 함량이었다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.181-182
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• 2001

세계식량기구(FAO)에 의하면, 해조류의 생산량은 연간 2천만톤이며, 국내 생산량은 연간 약 80만톤에 이른다. 이 중 미역, 김, 다시마는 주요 양식 대상종으로 주로 식품으로 소비되고 있는 해조류들이다. 최근 해조를 위시한 해양생물에는 육상생물과는 다른 약효활성이 있는 것으로 주목받아 많은 연구가 진행되고 있다(박종철 등, 2000, Unson, M. D. et al., 1993). 항균활성을 나타내는 본체는 다양하여 GRP(galactose-rich polysaccharide)(Gerlach, D. et al., 1994), flavonoid (Calzada, F., 1999) 등 여러 대상으로 연구되고 있다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.493-494
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• 2001

해조류는 해양생태계에서 광합성작용을 통하여 유기물을 생산하는 주요한 생산자로서, 질소ㆍ인 등의 영양염류의 저장창고로 해양의 물질 순환에 중요한 역할을 한다(Round 1981), 해조류의 생장률은 종과 영양염의 농도 등에 따라 달리 나타나며 (Lobban and Harrison 1994), 이에 대한 연구는 부영양화된 수계에서의 해조류의 영양염 흡수에 의한 수계환경 정화능에 대한 가능성을 고려하게 한다. (중략)

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2004.07a
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• pp.45-45
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• 2004

대사작용의 개선, 정장작용과 유독 물질의 제거, 혈압과 콜레스테롤치의 정상화, 항균 및 항암효과 등 다양한 생리작용을 갖는 것으로 알려진 해조류의 기능성 규명을 위한 연구의 일환으로 총 6종(진두발, 갈래곰보 꼬시래기, 돌가사리, 고장초 톳)의 해조류의 에탄을 추출물에 대한 항산화 효과를 실험하였다. 해조류의 환원력은 시료의 첨가농도에 비례하는 경향이었으며, SOD 유사활성은 고장초의 경우 가장 높은 활성을 나타내었는데 첨가농도 500 $\mu\textrm{g}$/$m\ell$와 1000 $\mu\textrm{g}$/$m\ell$에서 각각 35.43%와 56.71%의 활성을 나타내었다. (중략)

• Proceedings of the SOHE Conference
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• 2003.10a
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• pp.86-86
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• 2003

최근 해조류는 다양한 생리활성 물질을 가진 기능성 식품원으로 그 중요성이 부각되고 있다 특히, 식이섬유소원으로 해조류에 대한 관심이 높아지고 있는데, 섬유소, 알긴산, 리그닌 등을 건조중량의 약 30∼40%정도 함유하고 있으므로, 좋은 식이섬유 급원이 될 수 있다. 그 중 다시마는 점성, 보수성, 이온교환성, 겔화성, 콜레스테롤 배출작용, 카드뮴과 같은 중금속 및 방사선 물질의 체내 흡수억제와 배출작용, 고혈압에 효과적인 laminine 등을 함유하고 있어 최근 건강식품으로서의 인식이 자리잡혀가고 있다. 그러나 현재 국내에서 다시마의 소비형태는 대부분이 생체로 이용되고 있으며, 가공품으로는 라면 등의 수우프 원료나 건제품으로 이용되고 있어 간편성, 맛, 향 및 다양성에 있어서 개선해야 필요성이 있다 특히 다시마의 특유한 해조취는 이들을 이용한 제품을 제조할 경우 맛, 향에 있어서 거부감을 불러일으키는 경우가 많다. 따라서 해조취를 제거 또는 마스킹(Masking)하는 방법에 대한 연구가 행해져야 한다. 이에 다시마를 이용하여, 마스킹 효과와 용도의 다양화를 꾀하기 위해, 전통식품 중의 하나인 묵에 첨가하여 묵을 제조해 볼 필요성이 대두된다.

• Asian Journal of Turfgrass Science
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• v.25 no.2
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• pp.195-201
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• 2011

The seaweed (Ascophyllum nodosum) extracts and chitosan formulations were sprayed on species of creeping bentrgass (Agrostis palustris Huds) cultivar "Penn A1" and species of Kentucky bluegrass (Poa pratensis L.) mixed cultivars (Midnight 33%, Moonlight 33%, Prosperity 33%) during fall season in sod farm. Turf color, chlorophyll contents and NDVI (Normalized Difference Vegetation Index) to affect turf qualities were investigated. There were detected significantly difference on chlorophyll contents and DNVI with seaweed extracts and chitosan formulations treatments. The contents of chlorophyll and NDVI on species of Kentucky bluegrass mixed cultivars and species of creeping bentgrass cultivar "Penn A1" were significantly increased by foliar spray with chitosan formulations and seaweed extracts. There was not a significantly difference on leaf color in two species within cultivars. These results suggested that chitosan formulations and seaweed extracts may help for turfgrass managements in the golf course during fall season.

• Journal of the Korean Society of Marine Environment & Safety
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• v.15 no.2
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• pp.99-104
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• 2009

The species composition and seasonal patterns in marine benthic algal community at intertidal zone in Jinhae Bay were investigated seasonally throughout 2007. A total of 45 species, 6 Chlorophyta, 10 Phaeophyta, and 29 Rhodophyta, were recorded, and dominant species were Ulva pertusa, U. conglobata, Sargassum horneri, Gelidium divaricatum, Gracilaria textorii, and Polysiphonia morrowii during study periods. The number of species were differed with seasons and stations; Higher number of algal species was 42 species in winter, whereas 33 species was lower in summer. The number of algal species were higher at station 1,7,8, while the lower value was at station 2, 3 than other stations. The differences of marine benthic algal composition at each station in MDS ordination due to the physical characteristics and local topography.