• Fisheries and Aquatic Sciences
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• v.21 no.7
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• pp.19.1-19.11
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• 2018

Background: Traditionally, East-Asians (Korea, Japan, and China) utilize seaweeds as a food source and ingredient in traditional medicine. Korea is one of the biggest seaweed producer and consumer in the global trade. Especially, side dishes made from seaweeds are very popular in the traditional Korean cuisines. Seaweeds are popular as fresh vegetable salads and soup or eaten as snacks. Main body: Seaweeds are rich in essential nutrients, minerals, and vitamins as well as a promising source of novel bioactive compounds. The compounds (polysaccharides, polyphenols, and sterols) present in the edible Korean seaweeds possess important bioactive properties such as antioxidant, anti-inflammation, anticancer, anti-diabetic, and anticoagulant properties. Thus, the long-term consumption of seaweed has a potential to reduce the risk of cancer, diabetes, obesity, and inflammation-related complications. However, seaweed consumption is limited to the small population around the globe. Thus, it is important to increase the awareness of the health benefits of seaweeds consumption among the general population. Short conclusion: In the present study, we discussed some popular green and red edible Korean seaweeds and their health-promoting properties. This study might be useful to increase the public awareness of the consumption of seaweed as a food source.

• The monthly packaging world
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• s.360
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• pp.79-83
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• 2023

• Fisheries and Aquatic Sciences
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• v.26 no.3
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• pp.181-187
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• 2023

The control of intestinal α-amylase and α-glucosidase is an effective therapeutic strategy for prevention of post-prandial hyperglycemia associated with diabetes mellitus. The objective of this study was to evaluate the anti-diabetes activities of Korean edible seaweed against α-amylase and α-glucosidase, two carbolytic enzymes involved in serum glucose regulation. Of the 41 species initially screened, Cladophora wrightiana var. minor, Eisenia bicyclis, Ecklonia cava, Ishige foliacea, and Ishige okamurae exhibited the strongest inhibitory activities from brown seaweeds. Asparagopsis taxiformis showed the strongest inhibitory effects from red seaweeds. The results of this study suggest that the crude brown seaweed extracts (C. wrightiana var. minor, E. bicyclis, E. cava, I. foliacea, and I. okamurae) and crude red seaweed extracts (A. taxiformis) may have beneficial effects suppressing the rise in postprandial hyperglycemia through the inhibition of α-amylase and α-glucosidase.

• ALGAE
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• v.24 no.3
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• pp.163-168
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• 2009

Grateloupia filicina (J.V. Lamouroux) C. Agardh (Halymeniaceae, Cryptonemiales, Rhodophyta) is an edible seaweed as well as an important source of carrageenan. In the present study, attempt has been made to develop a suitable protocol for effective regeneration of the seaweed and the rapid multiplication of the desired varieties. The young upright thallus of G. filicina was grown in axenic culture using both solid and liquid media. The various media tested were f/2, Provasoli’s Enriched Seawater (PES) and Enriched Seawater (ESW). The effect of glycerol (as a carbon source) and various plant growth regulators i.e. auxin (NAA) and cytokinins (Kinetin and BA) were tested. Although, regeneration of young thalli was observed from the cut ends in all the media, better growth was found in f/2, PES, f/2 (0.5% Glycerol), f/2 (NAA ${10^{-5}}_M)\;and\;f/2\;(BA\;{10^{-6}}_M$). On the other hand callusing was observed only in solid media supplemented with low concentration of Glycerol (0.5%) in f/2, NAA ${10^{-5}}_M\;in\;f/2,\;PES\;and\;BA\;{10^{-5}}_M$ in f/2. Young thalli were developed from the callus sub culture after 40 days of inoculation.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.39 no.1
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• pp.16-22
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• 2006

Mineral and heavy metal contents were determined in three brown edible seaweeds (sea mustard, Undaria pinnatifida; seaweed fusiforme, Hizikia fusiforme; sea tangle, Laminaria japonica) collected from Gijang and Wando in Korea, and two green seaweeds (sea lettuce, Enteromorpha prolifera; green laver, Monostroma nitidum) collected from Gijang. Seaweeds contained high proportions of ash (13.8-24.8%) and sulfate (1.08-3.25%). In brown seaweeds, ash contents (24.5-24.8%) were higher than in green seaweeds (13.8-15.2%). The differences of mineral contents were remarkable in both Gijang and Wando and in 5 various kinds of seaweeds. Brown seaweeds contained higher amounts of both macro-minerals (657-13,947 mg/100 g; Ca, Mg, Na, K) and trace elements (0.27-12.98 mg/100 g; Fe, Al, Zn, Mn, Cr, Cu, Ni), and green seaweeds also had relatively higher amounts of both macro-minerals (233-5,279 mg/100 g) and trace elements (0.26-10.61 mg/100 g).

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.387-388
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• 2006

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.6
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• pp.1098-1106
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• 2000

• Korean Journal of Fisheries and Aquatic Sciences
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• v.48 no.1
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• pp.51-57
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• 2015

With continuing demand for the development of new, effective and safe therapies, an investigation was carried out to test the efficacy of an antibacterial agent derived from marine edible seaweed. The methanolic extract of Ecklonia cava from marine edible seaweed evinced potential antibacterial activity against Enterococcus faecalis. Among five solvent-soluble fractions of E. cava methanolic extract, the ethyl acetate soluble extract (EtOAc) exhibited the strongest antibacterial activity, with a MIC value of $128{\mu}g/mL $ against E. faecalis strains. Furthermore, a synergistic antibacterial effect between an antibiotic and the EtOAc fraction was assessed using fractional inhibitory concentration (FIC) indices. A combination of ciprofloxacin and the EtOAc fraction resulted in a ${\sum}FIC_{min}$ range of 0.188 and ${\sum}FIC_{max}$ of 0.508 to 563, suggesting that the ciprofloxacin-EtOAc fraction of E. cava combination resulted in an antibacterial synergy effect against E. faecalis.

• Journal of Microbiology and Biotechnology
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• v.24 no.3
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• pp.346-353
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• 2014

The chlorophyll-related compound pheophorbide a (Pa) was successively purified from an edible red seaweed, Grateloupia elliptica, using silica, octadecyl silica column chromatography and reversed phase-high-performance liquid chromatography, as well as the cell cycle inhibitory and apoptotic effects of Pa being investigated in U87MG glioblastoma cells. The Pa exhibited strong anticancer effects in the absence of direct photo-irradiation against various cancer cell lines, including U87MG, SK-OV-3, and HeLa cells. Among the cancer cells, the strongest anticancer activity of Pa exhibited on U87MG cells with $IC_{50}$ values of 2.8 ${\mu}g/ml$. In addition, Pa specifically had cytostatic activity on glioblastoma cells rather than human umbilical vein endothelial cells. Analysis of the cell cycle distribution showed that Pa induced G0/G1 arrest of U87 MG cells. In addition, arrested cells induced late apoptosis and DNA degradation under dark condition. These results suggest that Pa isolated from G. elliptica is a potential glioblastoma-specific anticancer agent without side effects on normal cells.

• Korean Journal of Environmental Biology
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• v.32 no.4
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• pp.306-310
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• 2014

The brown seaweed Sargassum fusiforme is an edible and highly valued in Korea. During the summer season, phytal organisms graze heavily on young algal blades and holdfastsof the species and substantially reduce harvestable biomass. Here, in this study, we investigated the effects of pH (range: 2~13) and salinity (range: 0~44 psu) on the removal of two major phytal animals, Caprella scaura and Gammaropsis utinomi, associated with S. fusiforme. We also examined the optimum quantum yield (Fv/Fm) of algae in the same experimental conditions to quantify the tolerance of algae to acid and salinity treatments. It was observed that the phytal animals showed more than 80% mortality at pH lower that pH 4 and the extreams of salinity (0~10 psu and 44 psu) after a 5 min of immersion. However, the quantum yield of S. fusiforme was not significantly different from controls within the pH 3~11 range, and the 0~44 psu salinity range. Precisely, if the pH and salinity conditions outside these ranges were used in comercial Sargassum culture, the removal of the animal species would be higher, but with reduced quantum yield of algae. Taken together, our study results indicated that the pH and salinity treatments could allow multiple harvests from the same holdfast of S. fusiforme.