• 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.

• ALGAE
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• 제26권2호
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• pp.201-208
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• 2011

A monoterpene lactone, loliolide was successively isolated from brown seaweed, Sargassum ringgoldianum subsp. coreanum using column chromatography and high-performance liquid chromatography. The structure of the isolated compound was determined by comparison of EIMS and NMR spectral data with the previously published data. The antioxidant activities of loliolide were also evaluated by DPPH and $H_2O_2$ radical and intracellular reactive oxygen species scavenging assays, and it showed moderate activities in all antioxidant assays. Furthermore, loliolide was found to exert positive dose-dependent effects in the protective effects against $H_2O_2$-induced cell damage which were determined via MTT, Hoechst staining assays and cell cycle analysis. This is the first study on chemical constituent of this seaweed according to our best knowledge. These results clearly indicated that loliolide isolated from Sargassum ringgoldianum subsp. coreanum can protect the cells against $H_2O_2$-induced cell damage or apoptosis.

• 한국어병학회지
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• 제35권1호
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• pp.41-46
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• 2022

Since viral haemorrhagic septicaemia virus (VHSV) was first reported in European rainbow trout (Oncorhynchus mykiss) in the 1930s, it has caused high prices in freshwater and saltwater fish around the world, causing enormous economic damage to the aquaculture industry. We have been seeking required countermeasures against viruses because of economic damage to the aquaculture industry. However, commercial vaccines have the limitations of being costly to use in farms and being effective to only one pathogen. The aquaculture industry these days is taking on new alternatives to vaccines, antibiotics and chemicals. In this study, the suitability of antiviral effects against VHSV was evaluated in vitro for various plant extracts to judge their effectiveness. Atriplex gmelinii, Ixeris repens, Arctium lappa, and Sargassum coreanum were tested to know the correlation between the amount of virus and the concentration of extract investigates if these extracts have antiviral effects. Virus and extracts at various concentrations were inoculated simultaneously as 1:1 ratio into EPC cell lines. There are no antiviral effects with Atriplex gmelinii, Ixeris repens and Arctium lappa. Extract of Sargassum coreanum only has the antiviral activity in a dose-dependent manner. These results show that extract of Sargassum coreanum can be used in aquaculture industry as an antiviral materials.

• Nutrition Research and Practice
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• 제9권5호
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• pp.472-479
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• 2015

BACKGROUND/OBJECTIVES: The goal of this study was to examine the effect of Sargassum coreanum extract (SCE) on blood glucose concentration and insulin resistance in C57BL-KsJ-db/db mice. MATERIALS/METHODS: For 6 weeks, male C57BL/KsJ-db/db mice were administrated SCE (0.5%, w/w), and rosiglitazone (0.005%, w/w). RESULTS: A supplement of the SCE for 6 weeks induced a significant reduction in blood glucose and glycosylated hemoglobin concentrations, and it improved hyperinsulinemia compared to the diabetic control db/db mice. The glucokinase activity in the hepatic glucose metabolism increased in the SCE-supplemented db/db mice, while phosphoenolpyruvate carboxykinase and glucose-6-phosphatase activities in the SCE-supplemented db/db mice were significantly lower than those in the diabetic control db/db mice. The homeostatic index of insulin resistance was lower in the SCE-supplemented db/db mice than in the diabetic control db/db mice. CONCLUSIONS: These results suggest that a supplement of the SCE lowers the blood glucose concentration by altering the hepatic glucose metabolic enzyme activities and improves insulin resistance.

• 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.

• 한국식품영양과학회지
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• 제39권4호
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• pp.494-499
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• 2010

본 연구에서는 제주 연안에 서식하는 갈조류 중 큰잎모자반의 항산화활성을 확인하기 위하여 큰잎모자반으로부터 효소적 가수분해를 이용하여 추출물을 제조한 후 이들로부터 활성산소종의 소거활성을 확인하였다. 여기서 효소적 가수분해를 이용하여 제조된 큰잎모자반의 효소적 추출물은 항산화활성이 우수하였으며, 효소적 추출물간의 유의적 차이는 없었다. 또한 단백질 분해효소 추출물에서는 Neutrase 추출물이 항산화 활성이 우수하였으며, 당 분해효소 추출물에서는 Celluclast를 이용하여 제조된 효소적 추출물이 다소 우수한 항산화효과를 나타내었다. 이와 같은 결과는 여러 가지 효소들이 복합되어진 효소가 세포벽에 있는 섬유질이나 당단백질 혹은 알긴산 고분자물질 등을 분해시키는 작용을 유도하였기 때문이라고 사료된다. 따라서 수용성의 추출물은 유기용매 추출물의 단점을 보완할 수 있을 뿐만 아니라 큰잎모자반 효소적 추출물의 생리활성물질은 식품을 포함한 다양한 분야에 응용시킬 수 있을 것으로 사료되며, 이상의 결과로 큰잎모자반은 잠재적인 기능성식품 소재로서의 가능이 충분하다고 판단된다.

• KSBB Journal
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• 제30권4호
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• pp.155-160
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• 2015

The present study was to investigate the antioxidant activity in ethanol and water extracts of root and stem of Sargassum coreanum. Antioxidant activities were evaluated by total polyphenol contents, DPPH radical scavenging activity, chelating effect, reducing power, and rancimat method. Total polyphenol contents of ethanol and water extracts were 32.79 mg/g and 15.55 mg/g, respectively. Ethanol extract showed higher DPPH radical scavenging activity than water extract and similar activity to BHT. Reducing power of extracts was increased in a concentration-dependent manner and ethanol extract had more reducing power than water extract. Ethanol and water extracts have little chelating effect at all concentrations. Antioxidant index (AI) of ethanol extract measured by Rancimat was higher than that of water extract, but their AI was lower than that of BHT. These results indicate that ethanol extract of S. coreanum root and stem has more potent antioxidant activity than water extract through DPPH radical scavenging and reducing power, and could potentially be used as a good source of natural antioxidants.

• Fisheries and Aquatic Sciences
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• 제13권1호
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• pp.26-35
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• 2010

In our previous study, we preliminarily demonstrated that Celluclast and Neutrase extracts exhibited the strongest $H_2O_2$-scavenging activities among five carbohydrases (Viscozyme, Celluclast, Termamyl, Ultraflo and AMG) and five proteases (Kojizyme, Alcalse, Flavourzyme Protamex and Neutrase) extracts. Thus, Celluclast and Neutrase extracts were selected for use in further experiments and were separated into four different molecular weight fractions (<5, 5-10, 10-30 and >30 kDa). Among them, the 5-10 kDa fraction showed the highest $H_2O_2$-scavenging activity. The 5-10 kDa fraction also strongly enhanced cell viability against $H_2O_2$-induced oxidative damage. Furthermore, the fraction reduced the proportion of apoptotic cells induced by $H_2O_2$, as demonstrated by decreased sub-G1 hypodiploid cells and decreased apoptotic body formation by flow cytometry. These results indicated that the 5-10 kDa fraction of the Celluclast and Neutrase extracts from S. coreanum exhibited strong antioxidant activity over $H_2O_2$-mediated cell damage in vitro.

• Preventive Nutrition and Food Science
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• 제10권2호
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• pp.134-139
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• 2005

Seven brown algal species (Ecklonia cava, Ishige okamurae, Sargassum fulvellum, Sargassum horneri, Sargassum coreanum, Sargassum thunbergii and Scytosiphon lomentaria) were hydrolyzed using five proteases (Protamex, Kojizyme, Neutrase, Flavourzyme and Alcalase) and screened for angiotensin 1-converting enzyme (ACE) inhibitory activities. Most algal species examined showed good ACE inhibitory activities after the enzymatic hydrolysis. However, E. cava was the most potent ACE inhibitor of the seven species. Flavourzyme digest of E. cava exhibited an $IC_{50}$ of around $0.3\;{\mu}g/mL$ for ACE; captopril has an $IC_{50}$ of $\~0.05\;{\mu}g/mL$. The Flavourzyme digest was separated to three fractions by an ultrafiltration membrane (5, 10, 30 kDa MWCO) system according to the molecular weights. The active components were mainly concentrated in >30 kD fraction which are composed of the highest protein content $(27\%)$ and phenolic content (261 mg/100 mL) compared to the other two smaller molecular weight fractions. Therefore, the active compounds appear to be relatively high molecular weight complex molecules associated with protein (glycoprotein) and polyphenols. Therefore, E. cave is a potential source of antihypertensive compound.

• 한국식품영양과학회지
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• 제46권8호
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• pp.919-928
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• 2017

큰잎모자반에 함유되어 있는 다당류를 저분자화하기 위해 알긴산 분해 효소를 생산하는 Shewanella oneidensis PKA 1008의 조효소액을 첨가하여 저분자화하고 이의 면역증진능을 확인하였다. 먼저 저분자화됨을 확인하기 위하여 TLC를 실시한 결과 분해 24 h 이후부터 분해되기 시작하여 최종 60 h에서 dimers로 분해되었다. 그 후 비장세포에 큰잎모자반의 효소적 추출 분해물을 처리하여 in vitro에서 면역증진능을 확인한 결과 $IFN-{\gamma}$, IL-2, IL-6, IL-10의 경우 분해가 진행될수록 분비량이 많아졌다. 또한, 큰잎모자반의 효소적 추출 분해물을 2주 동안 마우스에 경구투여 한 결과, MTT assay 및 비장세포에서 분비되는 $IFN-{\gamma}$ 및 IL-2의 분비량의 경우 24 h 처리구에서 대조군보다 높은 수치로 농도 의존적으로 증가함을 나타내었다. IgG2a 분비량의 경우 24 h와 48 h 처리구에서 다소 증가하였으며, NK 세포의 경우 24 h 처리구에서 농도 의존적으로 활성이 증가하여 면역력을 증진시키는 결과를 보여주고 있다. 전혈을 이용하여 일반혈액검사의 경우 24 h 및 48 h 처리군에서 대조군보다 높은 수치를 나타내었다. 이상의 결과를 종합해볼 때 S. oneidensis PKA 1008 유래 조효소에 의한 큰잎모자반 효소적 추출 분해물이 면역 관련 세포증식률을 증가시키고 이에 따른 사이토카인의 분비량을 증가시키며 혈액 내 다양한 면역세포들의 수치를 증가시킴으로써 면역증진능에 탁월한 효과를 나타냄을 확인하였으나, 면역증진 효과에 기여하는 활성물질에 대해서는 밝혀지지 않아 그에 대한 추가적인 연구가 요구된다.