• 환경생물
• /
• 제21권4호
• /
• pp.428-438
• /
• 2003

Benthic marine algal community of Hakampo in the western coast of Korea was investigated qualitatively and quantitatively. Seasonal assessments of species composition, biomass, dominant species in biomass and vertical distributional pattern were carried out from spring to winter. A total of 121 species was identified; 6 blue-green, 18 green, 16 brown, 81 red algae. In three sites investigated, 96 species were collected at Bunjeomdo, 75 at Maoe, and 57 at Doranggol, respectively. Dermocarpa sp. and Acrochaetium microscopicum were collected for the first time in Korea through this investigation. Dominant species in specific proportions of biomass were Sargassum thunbergii, Gloiopeltis furcata, Corallina spp., Symphyocladia latiuscula and Monostroma nitidum. Seasonal fluctuations of mean biomass were 31.59-427.69 g dry wt$.$$\mu \textrm m^{-2}$ at Bunjeomdo and 20.98-473.48 g dry wt$.$$\mu \textrm m^{-2}$ at Maoe, respectively, which were comparatively high in the western coast of Korea. Vertical distribution in intertidal zones was Gloiopeltis furcata-Gloiopeltis furcata and Corallina spp.-Corallina spp. and Sargassum thunbergii.

• ALGAE
• /
• 제20권1호
• /
• pp.53-59
• /
• 2005

The objective of this study was to clarify marine algal flora and community structure of 16 uninhabited islands in Sinangun area, south western coast of Korea. As a result, a total of 63 species - 11 greens, 16 browns and 36 reds - was identified. The functional groups of marine algal species were filamentous 14.3%, foliose 20.5%, corticated 45.3%, leathery 13.7%, and articulated calcareous algae 6.2%. The (R+C)/P value was calculated as 2.9 showed temperate flora. The result of DCA showed that 16 uninhabitated islands tend to be distributed eastern and western parts. The dominant species was Ulva pertusa, while the subdominats were Gelidium divaricatum, Myelophycus simplex. The vertical distribution pattern of intertidal marine algae represented three distinct zones; Gloiopeltis furcata, Myelophycus simplex, Gelidium divaricatum - Ulva pertusa, Enteromorpha spp., Ishige okamurae - Ulva pertusa, Sargassum thunbergii, Symphyocladia latiuscula.

• 한국식품영양과학회지
• /
• 제36권4호
• /
• pp.431-438
• /
• 2007

해조류는 다양한 생리 활성을 나타내는 성분들을 함유하고 있어 항산화효과 등 다양한 생리활성 효과를 나타내는 것으로 보고되고 있다. 본 연구에서는 식용 가능한 28종의 해조류 메탄올추출물 중 보라우무 메탄올추출물이 인간의 대장에서 유래한 암세포인 HT-29세포의 세포증식을 억제함을 밝혔고, 가장 강한 HT-29 세포 증식 억제 효과를 나타낸 보라우무 메탄올추출물의 대장암세포 증식억제 기전을 밝히고자 하였다. 보라우무 메탄올추출물을 HT-29 세포 배양액에 여러 농도$(0{\sim}20{\mu}g/mL)$로 첨가하여 세포를 배양한 경우 보라우무 메탄올추출물 처리 농도가 증가할수록 세포증식이 현저히 감소하였고, apoptotic cell수는 현저히 증가하였다. Apoptosis의 주요한 조절인자인 Bcl-2 family 단백질 중 Bcl-2는 보라우무 메탄올추출물에 의해 변화가 없었고 Bax는 고농도에서만 소폭 감소하였다. 반면, t-Bid 단백질 수준은 보라우무 메탄올추출물의 처리에 의해 현저하게 증가하였다 Bcl-2 family Protein과 더불어 apoptosis의 조절에 주요한 역할을 하는 caspase 단백질의 경우 보라우무메탄올추출물 처리에 의해 cleaved caspase-8, -9, -7, -3 단백질 수준이 현저히 증가하였고, cleaved PARP 단백질수준도 현저히 증가하였다. 또한, caspase-8의 활성화를 유도하는 Fas 단백질 수준도 보라우무 메탄올추출물에 의해 현저하게 증가하였다. 이 결과로부터 보라우무 메탄올추출물은 caspase-8의 활성 증가에 의한 미토콘드리아 막 투과성 변화와 caspase-7/-3 활성의 증가를 통해 apoptosis를 유도함으로써 암세포의 증식을 억제한다는 결론을 내릴 수 있다. 본 연구는 보라우무를 항암효과를 지니는 기능성식품이나 항암제로 개발할 수 있는 가능성을 제시하고 있으며 향후 보라우무를 이용한 제품의 개발을 위해서는 유효성분의 동정 및 그 성분의 작용 기전에 대한 면밀한 추가 연구가 필요할 것으로 보인다.

• 한국수산과학회지
• /
• 제4권3_4호
• /
• pp.105-112
• /
• 1971

1970넌 6월부터 1971넌 5월까지 여수 오동도의 2개 조사지점에서 월 2회 조사한 해조 군락은 아래와 같다. 1. 총출현종은 69종으로 녹조류 12종, 갈조류 17종 및 홍조류 40종이며, 조사 장소에 따른 출현종의 뚜렷한 차이는 없었다. 2. 계절별 해조 군락은 대부분 주년 출현종으로 층위가 형성되어 출현종의 변화가 적으나 Ulva pertusa, Enteromorpha sp., Sphacelaria sp., Scytosiphon iomentaria, Colpomenia sinuosa, Sargassum thunber gii, Pterocladia tenuis, Amphiroa ephedrea, Carpopeltis affinis, Gigartina tenera, Polysiphonia yendoi, Chondria crassicaulis, Symphyocladia atiuscula등은 피도의 증감이 많았다. 3. 층위의 출현종은 대체로 변화가 적어, $200\~150cm$층은 Gloiopeltis complanata, G. furcata, Enteromorpha sp.등이고 $150\~100cm$층은 Ulva pertusa, Chondria crassicaulis, Sargassum thunbergii등이며, $100\~50cm$층은 Gigartina tenera, Pterocladia tenuis, Scytosiphcn lomentaria, Polysiphonia yendoi 등이고, 제일 아래층인 50cm 이하에는 Sargassum sagamianum, Cystophyllum sisymbrioides, Gelidium amansii, Acresorium yendoi, Microcladia elegance등으로 층위가 형성되었다. 4. A, B 두 조사지점은 100cm층을 중심으로 아래층에는 차이가 적으나 위층에는 차이가 있어, A지점에는 Gloiopeltis complanata, Corallina pilulifera, Chondria crassicaulis, Sargassum thunbergii, Polysiphonia yendoi 및 Ulva pertusa등으로 층위가 형성되나, B지점에는 Gloiopeltis complanata, G. furcata, Enteromurpha sp. 및 Ulva pertusa등으로 층위가 간단하였다. 5. Taniguti의 해조 군락 분류에 의하면 Myelophycus caespitosus 군단의 Gigartina intermedia-Sargassum sagaminnum군집 (Sargasseto-Gigartinetum Taniguti)에 속한다.

• Ocean and Polar Research
• /
• 제34권4호
• /
• pp.445-451
• /
• 2012

The EtOH extracts of red seaweeds (Symphyocladia latiuscula, Chondrus ocellatus and Carpopeltis affinis) and solvent partitioned fractions were investigated for their 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and 1,1-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging effects and the total phenolic contents were correlated with ABTS and DPPH radical scavenging activities. The EtOH extracts and their solvent partitioned fractions exhibited strong ABTS and DPPH radical scavenging activities. Among the solvent partitioned fractions obtained from n-Hexane (HX), methylenchloride (MC), ethylacetate (EA), and buthanol (BuOH), the HX fraction from C. affinis showed higher radical scavenging activities than other fractions. Total phenolic contents showed significant correlation ($r^2$ = 0.709) with ABTS radical scavenging activity. The results of this study suggest that the strong radical scavenging activity of HX fraction from C. affinis is a promising natural antioxidant for healthcare products.

• 한국수산과학회지
• /
• 제42권6호
• /
• pp.664-673
• /
• 2009

An intertidal marine benthic algal vegetation and vertical distribution at Youngil Bay, the eastern coast of Korea was investigated to clarify the community structure and vertical distribution by quadrat method from February 2003 to January 2009. Marine algae identified from the area were 152 species; 25 green, 38 brown and 89 red algae. The dominant species were Ulva spp., Ulva pertusa, Chaetomorpha moniligera, Undaria pinnatifida, Sargassum horneri, S. miyabei, S. thunbergii, Gelidium amansii, Corallina pilulifera, Grateloupia elliptica, G. filicina, Prionitis cornea, Chondrus ocellatus, Chondracanthus intermedia, Acrosorium polyneurum, Chondria crassicaulis, Polysiphonia morrowii and Symphyocladia latiuscula at study sites. The vertical distribution of intertidal marine algae was divided into three distinct zones. They were characterized by Porphyra spp. and Ulva spp. at the upper, Ulva spp. and Ulva pertusa at the middle, and Sargassum spp., Gelidium amansii, Grateloupia spp., Chondrus ocellatus and Chondria crassicaulis at the lower zones, respectively. Functional form group analysis showed that coarsely branched forms comprised 44.7% of the algal community, whereas thick leathery forms, sheet forms and filamentous forms comprised 6.6-25.7%. R/P, C/P and (R+C)/P values were 2.34, 0.66 and 3.00, respectively.

• Fisheries and Aquatic Sciences
• /
• 제12권3호
• /
• pp.219-226
• /
• 2009

Seasonal variation in the biomass of eelgrass (Zostera marina) and epiphytic algae in two eelgrass beds (Dongdae and Aenggang Bay) around Namhae Island was investigated throughout 2005. Shoot density and eelgrass biomass differed across months and locations. Peak shoot density occurred from April to August 2005, whereas eelgrass biomass was higher in July and August 2005. Shoot density as well as eelgrass biomass were higher in Dongdae Bay compared to Aenggang Bay. A total of 21 epiphytic algal species (4 Chlorophyta, 2 Phaeophyta, and 15 Rhodophyta) were collected, and dominant species included Polysiphonia japonica, Lomentaria hakodantensis, Symphyocladia latiuscula, Champia sp., and Heterosiphonia japonica. Seasonal variation in both the species composition and biomass of epiphytic algae was substantial: peak epiphytic algal biomass occurred in January and December 2005. We also observed high epiphytic algal biomass in the eelgrass bed of Dongdae Bay. Seasonal changes in the biomass of eelgrass and epiphytic algae were primarily influenced by water temperature, whereas those of the epiphytic algal community were also correlated with eelgrass (substrate) morphology and growth, the life cycle of epiphytic algae, and physical characteristics within eelgrass beds. The spatial variation of eelgrass density and biomass were also limited by sediment characteristics.

• 한국수산과학회지
• /
• 제44권1호
• /
• pp.85-94
• /
• 2011

The species composition and distributions of benthic marine plants on the East Coast of Korea were studied. We examined all species found in the intertidal and subtidal zones at four sites seasonally from August 2006 to May 2009. Of the 148 species identified, 92 were rhodophytes, 39 were phaeophytes, 16 were chlorophytes, and 1 was a seagrass. The most species (125) were found at Jukbyeon, while the fewest (99) were found at Chuksan. Overall, the numbers of species were highest during the spring and lowest in autumn. Seventy-five species (50 rhodophytes, 15 phaeophytes, 9 chlorophytes, and 1 seagrass) were found at all four sites. The dominant species providing cover were melobesioidean algae, Sargassum spp., Phyllospadix japonica, and Corallina pilulifera. The vertical distribution of benthic marine plants was characterized by C. pilulifera, Sargassum spp., Hizikia fusiformis, Grateloupia elliptica, Symphyocladia latiuscula, Grateloupia lanceolata, Ulva pertusa, and Chondria crassicaulis in the intertidal zone; Sargassum spp., P. japonica, Prionitis cornea, C. pilulifera, and Acrosorium polyneurum at 1 m depth; Sargassum spp., P. japonica, and melobesioidean algae at 5 m depth; and melobesioidean algae at 10 m depth. There was variation among the sites, presumably due to differences in the local conditions.

• Archives of Pharmacal Research
• /
• 제27권2호
• /
• pp.194-198
• /
• 2004

Reactive oxygen species (ROS) play an important role in the pathogenesis of many human degenerative diseases such as cancer, aging, arteriosclerosis, and rheumatism. Much attention has been focused on the development of safe and effective antioxidants. To discover sources of antioxidative activity in marine algae, extracts from 17 kinds of seaweed were screened for their inhibitory effect on total ROS generation in kidney homogenate using 2',7'-dichlorofluorescein diacetate (DCFH-DA). ROS inhibition was seen in three species: UIva pertusa, Symphyocladia latiuscula, and Ecklonia stolonifera. At a final concentration of 25 $\mu\textrm{g}$/mL, U. pertusa inhibited 85.65$\pm$20.28％ of total ROS generation, S. latiscula caused 50.63$\pm$0.09％ inhibitory, and the Ecklonia species was 44.30$\pm$7.33％ inhibition. E. stolonifera OKAMURA (Lam-inariaceae), which belongs to the brown algae, has been further investigated because it is commonly used as a foodstuff in Korea. Five compounds, phloroglucinol (1), eckstolonol (2), eckol (3), phlorofucofuroeckol A (4), and dieckol (5), isolated from the ethyl acetate soluble fraction of the methanolic extrclct of E. stolonifera inhibited total ROS generation.

• 한국수산과학회지
• /
• 제26권1호
• /
• pp.49-62
• /
• 1993

본 조사는 남해의 10개 도서의 조간대 해조군집의 구조와 특성을 조사하였다. 그 결과 군집의 구조는 상, 중, 하부의 뚜렷한 층위구조로 구성되고, 상부와 중부의 중요종은 조사지간에 매우 유사하였다. 하부의 중요종은 지역간에 차이가 있고, 다양한 종에 의해 대표되었다. 상부의 대표종은 막상 또는 사상형의 Gloiopeltis spp., Gelidium divaricatum, Porphyra suborbiculata, Nemalion vermiculare였으며, 분포범위는 해조분포 상한에서 따개비와 홍합류 층의 하한이었다. 중부의 대표종은 Corallina pilulifera, Chondria crassicaulis, Hizikia fusiformis이며, 분포범위는 평균해면 부근이었다. 하부의 범위는 중부의 하한에서 기준면까지이고, Sargassum sagamianum, Laurencia spp., Symphyocladia latiuscula, Chondrus spp., Pachymeniopsis lanceolata, Gigartina spp.가 조사지간에 공통성이 높은 중요종으로 나타났다.