• ALGAE
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• 제21권4호
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• pp.393-405
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• 2006

Eight species of Sargassum subgenus Bactrophycus section Halochloa and Repentia were collected from the coasts of Korea: Sargassum coreanum J. Agardh, Sargassum sagamianum Yendo, Sargassum micracanthum (Kützing) Endlicher, Sargassum macrocarpum C. Agardh, Sargassum autumnale Yoshida, Sargassum siliquastrum (Mertens ex Turner) C. Agardh, Sargassum serratifolium (C. Agardh) C. Agardh, Sargassum yezoense (Yamada) Yoshida et Konno. These species were investigated on morphological variations and geographical distributions in Korea. The valuable taxonomic characters between similar species of these section were discussed with special reference to types of holdfasts, shape of main branch, leaves and vesicles.

• 생명과학회지
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• 제11권4호
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• pp.321-327
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• 2001

The purpose of this study was to investigate the nitrite scavenging activity of the ethanol and water extracts obtained from Hizikia fusiforme and Sargassum fulvelum using sodium nitrite under different pH conditions. The nitrite scavenging activity was appeared in all the extracts examined and it showed the highest value at pH 1.2 The ethanol extract of Hizikia fusiforme provided higher activity than the water extract of that. Ohterwise, the nitrite scavenging activity of Sargassum fulvelum ethanol extract was similar to that Sargassum fulvelum water extract. There was significant difference among concentration of extracts Hizikia fusiforme and Sargassum fulvelum. Also, nitrite scavenging activity of the extracts Hizikia fusiforme and Sargassum fulvelum decreased with higher pH condition. In addition, the activity was increaed with higher concentration of extracts Hizikia fusiforme and Sargassum fulvelum in the course of reaction time 30 minute to 3 hour.

• Animal Bioscience
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• 제34권3_spc호
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• pp.449-456
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• 2021

Objective: Seaweeds could be an alternative and functional feed resource. The purpose of this experiment is to investigate the effect of dietary supplementation of Sargassum meal on laying performance and egg quality of layers. Methods: Two hundred 36-wk-old layers were divided into five treatment groups. Each treatment had four replicates with 10 hens per experimental unit. The corn-soybean meal basal diet was formulated as control group. Sargassum meals were included 0%, 1%, 2%, 3%, or 5% to diets for five treatment groups, respectively. Treatment groups were isocaloric-isonitrogenous diets. Laying performance and egg quality were measured for eight weeks. Results: Sargassum meal supplementation did not affect daily feed intake. Supplementation 1% to 3% of Sargassum meal in diets increased daily laying rate and egg mass compared with those from control group (p<0.05). Egg qualities among five groups were all similar. Supplementation of 3% Sargassum meal increased the lightness of egg yolk (p<0.05). Eggs produced from layers fed 1% and 2% Sargassum meal had a higher consumer's acceptability than the control group (p<0.05). In blood characteristics, contents of glucose, nitrogen, triiodothyronine (T3) and thyroxine (T4) increased as the increase of supplementation ratio of Sargassum meal (p<0.05). In serum antibody titers, supplementation of 2% Sargassum meal stimulated a higher immunoglobulin M (IgM) level than that from control group (p<0.05). However, IgM content of layers fed diets with Sargassum meal ≥3% were decreased (p<0.05). There was no difference in IgA and IgG titers among groups. Conclusion: Supplementation of 1% to 3% Sargassum meal has shown to increase egg laying rate and egg mass of Leghorn layers. However, high supplementation (5%) would negatively affect laying performance. In consideration of laying performance, egg quality, consumer responses, and blood antibody, supplementation of Sargassum meal was suggested 2% in the diet for layers.

• Korean Chemical Engineering Research
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• 제62권2호
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• pp.142-146
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• 2024

전세계적으로 천연화장품에 대한 관심과 수요가 크게 늘어나고 있다. 따라서 기존 화학합성 기능성화장품소재를 대체하기 위한 노력의 일환으로서 천연물에서 기능성화장품소재를 발굴하고자 하였다. 모자반은 우리나라의 해안 전지역에서 쉽게 볼 수 있는 갈조류의 일종으로서 식용으로도 이용되는 만큼 안전성이 확보되어있는 해조류이다. 본 연구에서는 큰잎 모자반(Sargassum coreanum). 짝잎 모자반(Sargassum hemiphyllum), 쌍발이 모자반(Sargassum patens)의 3가지 종류의 모자반으로부터 열수를 이용하여 유효성분을 추출하였으며, 항산화효과, 미백효과, 주름개선효과, 자외선흡수효과 및 항염증효과를 측정하여 기능성 화장품 소재로서의 응용 가능성을 살펴보고자 하였다. 모자반추출물은 세포독성시험결과 안전성이 매우 우수하였고, DPPH radical scavenging activity를 이용한 항산화능 측정결과 우수한 항산화능을 보여주었으며 tyrosinase inhibition을 이용한 미백효과시험에서는 큰잎 모자반(Sargassum coreanum)의 미백효과가 상당히 우수하였다. 그러나 주름개선효과, 자외선흡수효과와 항염증효과는 비교적 낮았다. 결론적으로 큰잎 모자반(Sargassum coreanum)은 세포독성이 적었고, 항산화효과와 미백효과가 우수하여 미백 기능성화장품소재로서 응용가능성이 높음을 알 수 있었다.

• 한국수산과학회지
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• 제49권5호
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• pp.689-693
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• 2016

Sargassum golden tides occurred in Shinan-gun and Jeju Island, Korea, between January and May 2015. In Shinangun, 5,180 tons of Sargassum were removed from 3,339 ha of coastline, while 20,000 tons were removed from Jeju Island. The huge floating masses of seaweed caused damage to fisheries in Shinan-gun including abalone sea cage, Pyropia and Saccharina farms off the southwest coast of Korea. Drifting Sargassum also washed ashore on Jeju Island. The species of Sargassum in these golden tides was identified as S. horneri (Turner) C. Agardh, based on morphology and molecular data, and it appears to have originated from the East China Sea. This is the first report on Sargassum golden tides causing damage to fisheries in Korea.

• Preventive Nutrition and Food Science
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• 제17권1호
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• pp.8-13
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• 2012

This study was designed to investigate whether Sargassum ringgoldianum extract may inhibit ${\alpha}$-glucosidase and ${\alpha}$-amylase activities, and alleviate postprandial hyperglycemia in streptozotocin-induced diabetic mice. The $IC_{50}$ values of Sargassum ringgoldianum extract against ${\alpha}$-glucosidase and ${\alpha}$-amylase were 0.12 mg/mL and 0.18 mg/mL, respectively, which evidenced higher activities than those of acarbose. The blood glucose levels of the Sargassum ringgoldianum extract administered group were significantly lower compared to the control group in the streptozotocin-induced diabetic mice. Moreover, the area under the two-hour blood glucose response curve was significantly reduced and the absorption of dietary carbohydrates was delayed after administration of Sargassum ringgoldianum extract in the diabetic mice. Therefore, these results indicated that Sargassum ringgoldianum extract may help decrease the postprandial blood glucose level via inhibiting ${\alpha}$-glucosidase.

• 분석과학
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• 제13권3호
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• pp.368-377
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• 2000

실리카고정괭생이모자반을 합성하여 중금속 흡착제로 이용하였다. 이 흡착제에 대한 중금속 Cd(II), Pb(II)이온의 최대흡착조건을 알아보고 흡착특성을 연구하였다. 그 결과 산성보다는 알카리성에서 흡착량이 더 크고 Si-고정괭생이모자반에 대한 중금속 Cd(II), Pb(II)이온의 흡착량이 더 큼을 알 수 있었다. 또한 Cd(II) 이온보다 Pb(II) 이온의 흡착량이 더 높음을 알 수 있었다. Cd(II) 및 Pb(II) 이온의 회수율은 괭생이모자반에서 58.0-62.6%, 61.2-64.4%로 나타났고, Si-고정괭생이모자반에서 56.8-92.7%, 37.8-47.9%로 나타났다. Cd(II)이온은 Si-고정괭생이모자반에서의 회수율이 더 높게 나타났으나, Pb(II) 이온은 Si-고정괭생이모자반에서의 회수율이 더 낮게 나타났음을 알 수 있었다.

• 한국수산과학회지
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• 제42권3호
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• pp.284-289
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• 2009

We determined the influence of Sargassum beds on the water quality in Gamak Bay, Korea. Water temperature and salinity range from 3.3 to $23.4^{\circ}C$ and from 29.6 to 33.7 psu, respectively. Dissolved oxygen was 10.45 mg L-1 in the Sargassum bed and 9.23 mg L-1 in the control. Chlorophyll-a was $3.90{\mu}g\;L^{-1}$ in the Sargassum bed and 2.21${\mu}g \;L^{-1}$ in the control. Chemical oxygen demand were 1.14${\mu}g\;L^{-1}$ in the Sargassum bed and 1.43${\mu}g\;L^{-1}$ in the control. Total nitrogen were 0.038${\mu}g\;L^{-1}$ in the Sargassum bed and 0.067${\mu}g \;L^{-1}$ in the control. Total phosphorus were 0.043${\mu}g \;L^{-1}$ in the Sargassum bed and 0.072${\mu}g \;L^{-1}$ in the control. Multivariate statistical analysis was used to analyze data. Water temperature was highly positively correlated with DO (p<0.01). T-N was highly positively correlated with T-P (p<0.01).

• Asian Pacific Journal of Cancer Prevention
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• 제13권12호
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• pp.6073-6076
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• 2012

Discovery of anticancer drugs that kill or disable tumor cells in the presence of normal cells without undue toxicity is a potential challenge for therapeutic care. Several papers in the literature have emphasized the potential implications of marine products such as seaweeds which exhibit antitumor activity. Study attempts to screen the antitumor effect of Sargassum sp, against chosen cell lines such as MCF-7 (Breast cancer) and Hep-2 (Liver Cancer). Ethanol extract of Sargassum sp. was concentrated using a Soxhlet apparatus and dissolved in DMSO. In vitro cytotoxic activity of Sargassum sp at various concentrations ($100{\mu}g/ml-300{\mu}g/ml$) screened for antitumor effect against the chosen cell lines using MTT assay (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide, a yellow tetrazole). The study documented that the percentage of cell viability has been reduced with increased concentration, as evidenced by cell death. Sargassum sp extract shows potential cytotoxic activity ($P{\leq}0.05$) with $IC_{50}$ of $200{\mu}g/ml$ and $250{\mu}g/ml$ against Hep-2 and MCF-7 cell lines respectively. The ethanol fraction of Sargassum sp induced cell shrinkage, cell membrane blebbing and formation of apoptotic bodies with evidence of bioactive components as profound influencing factors for anti-tumor effects. Further research need to be explored for the successful application of Sargassum sp as a potent therapeutic tool against cancer.

• 자연과학논문집
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• 제4권
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• pp.11-22
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• 1991

Early studies on Korean Sargassum subjenus Bactrophycus were partly started by Kyetzubg(1843,1849), J. Agardh(1889), Cotton(1906), Yendo(1907) and Okamura(1913, 1914, 1915, 1917). Kang(1966) reported 15 species and 4 subspecies of Sargassum subgenus Bactrophycus and their wide distribution on the Korean coasts in his paper [On the geographical distribution of marine algae in Korea], a foundation stone of Korean phycology. In fact, all the Korean coasts and subtidal zone are inhabited by Sargassum plants. They constitute the most part of the primary production and dominant species of benthic algal vegetation. In 1974, L.K. Lee began to study Sargassum monographically as seaweed resources in Korea. The Koreans eat some species of Sargassum (including Hizikia fusiformis) or use them as fertilizer of the farm near the coast. Among the reported 17 species of Korean Fucales, 12 species belong to Bactrophycus. Yoo(1976) dealt with the descriptions, figures, and a key of 24 species of Korean Fucales plants in her M.S. thesis paper. Among them 16 species belonged to Bactrophycus. Even though the above two works were done with thorough observation of the dry specimens kept in the Pusan Fisheries University Herbarium (most of them were identified by Kang, J.W.) and nation-wide collections, great morphological varieties of these taxa made Lee and Yoo hesitate to publish the paper. Instead, the serial chemotaxonomic studies on the geographical variations of Korean Fucales plants(Yoo and Lee, 1988a, 1988b ; Yoo, et al., 1988) were held to solve the problem, while foreign papers (especially both Drs Tseng's and Yoshida's serial works on Bactrophycus). and authenthic specimens that foreign scholors sent to Korean phycologists induced them to find that several species of Sargassum had been misidentified from the beginning. We introduce here Korean Sargassum subgenus Bactrophycus according to Tseng et al. (1985), mentioning briefly the characteristics of the species, key, and distribution on the Korean coasts.