• Title, Summary, Keyword: mussel

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Paralytic shellfish poisons in the cultured mussel Mytilus edulis galloprovincialis (양식(養植) 진주담치의 마비성패독(痲痺性貝毒))

  • Jeon, Joong-Kyun;Huh, Hyung-Tack
    • 한국해양학회지
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    • v.24 no.2
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    • pp.79-83
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    • 1989
  • Attempts were made to analyze the toxin composition of the toxic mussel Mytilus edulis galloprovincialis which were collected from aquaculture pond in Apr. 1988 in Hachung, Koje, southern Korea. The toxins were partially purified from the ethanolic extract of the mussel digestive glands by activated charcoal and Bio Gel P-2 column chromatography. HPLC analysis demonstrated that the toxin consisted mainly of gonyautoxin 1-4 (GTX 1-4), along with trace amounts of saxitoxin (STX) and protogonyautoxin 1-2 (PX 1-2).

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Beyond Mussel-inspired Polydopamice Coatings: Derivatives of Catecholamines (카테콜아민의 화학치환: 홍합 모방 코팅 물질인 도파민을 넘어서)

  • Lee, Haesung A.;LEE, Haeshin
    • Journal of Adhesion and Interface
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    • v.19 no.3
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    • pp.123-128
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    • 2018
  • As a mussel-inspired surface independent modification chemistry using catecholamine family molecule was suggested on 2007, there are tremendous efforts being done by researchers from around the world to adjust and develop diverse applications using catecholamine family. Accordingly, we will discuss about the novel method to extend catecholamine applications, which is through the functional group substitution of catecholamine molecules.

Spawning Conditions of the Bitterling, Acheilognathus yamatsutae Mori(Cyprinidae) (줄납자루,Acheilognathus yamatsutae Mori(Cyprinidae)의 산란 조건)

  • Song, Ho-Bok; Kwon, Oh-Kil
    • Korean Journal of Ichthyology
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    • v.7 no.1
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    • pp.18-24
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    • 1995
  • The spawning condition was investigated of the bitterling, Acheilognathus yamatsutae Mori in aquariums. Sexual responses in male and female bitterlings were very sensitive to the mussel rather than the other sex. But spawning behavior was shown ouly when all of the male, the female and the mussel were present. And the sexual response was not shown at all when there was no direct contact with the live mussel.

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Purification of a Antimicrobial Peptide from the Marine Mussel, Mytilus coruscus (홍합 [Mytilus coruscus]으로부터 항균활성 펩타이드의 정제)

  • Kim In-Hae;Kim Jin-Wook;Lee Jae-Hwa
    • Environmental Mutagens and Carcinogens
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    • v.26 no.1
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    • pp.25-29
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    • 2006
  • Antimicrobial peptides (AMPs) play an important role in this response by rapidly killing invading microorganisms. In this study antimicrobial peptide has been isolated from acidified whole body extract of a bivalve mollusk, the marine mussel (Mytilus coruscus). This peptide purified to homogeneity by gel-filtration and reversed-phase high performance liquid chromatography. The molecular weight was 1464.92 Da, determined by MALDI-TOF Mass spectrometry. In addition to growth inhibition of Escherichia coli D31.

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Mussel-Inspired, Fast Surface Modification of Solid Substrates

  • Hong, Sang-Hyeon;Kang, Sung-Min;Lee, Hae-Shin
    • Proceedings of the Korean Vacuum Society Conference
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    • pp.201-201
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    • 2011
  • Recently, mussel-inspired surface modification, called polydopamine coating has been extensively implemented to many areas, due to its material versatility and ease to use. In particular, incubation of substrates in an alkaline dopamine solution resulted in self-polymerization of dopamine and modified variety of material surfaces, including noble metals, metal oxides, ceramics, and synthetic polymers. However, the polydopamine coating has a drawback to practical use; it takes more than 12 hrs to introduce sufficient polydopamine layers to solid substrates. Here, we investigated the rate-enhanced polydopamine coating by varying reaction conditions: pH, concentration, and the addition of the oxidizing agent. As a result, the optimum condition for fast polydopamine coating was found, and solid substrates were efficiently coated with polydopamine layers in just few minutes using the condition. The polydopamine-modified surface was characterized by XPS and contact angle goniometry, and the biocompatibility of the modified surface was also proved by cell attachment test.

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Motochondrial DNA Polymorphism of the Blue Mussel (Mytilus edulis) Species Complex on the East Coast of Korea (한국 동해안에서 서식하는 진주담치(Mytilus edulis)의 미토콘드리아 DNA 다형현상)

  • Kim, Ik-Soo;Min, byung-Yoon;Yoon, Myung-Hee;Kim, Doh-Hoon
    • Journal of Life Science
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    • v.9 no.3
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    • pp.262-267
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    • 1999
  • Mitochondrial DNA (mtDNA) polymorphism of the blue mussel (Mytilus edulis) species complex sampled from the east coast of Korean was studied using a partial sequence of COIII gene (336 bp). Samples obtained from three localities on the east coast of Korea revealed four haplotypes with two clearly differentiated mitochondrial clades (termed clades B and E), separated by 4.2% of minimum sequence divergence. This pattern indicates no difference between east and south coasts of Korea. According to population genetic theory on evolutionary characteristics of mtDNA, we concluded that mtDNA introgression from M. edulis to M. gallprovincialis might be a source for mtDNA polymorphism found in mussels on the east coast of Korea.

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Analysis of polychlorinated biphenyls in shellfish collected from a market

  • Lee, Ga-Jeong;Moon, Ji Yong;Lee, Eun-Hwa;Ha, Hye-Sook;Jeong, Gi Ho
    • Analytical Science and Technology
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    • v.18 no.6
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    • pp.529-534
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    • 2005
  • We collected seven species of shellfish; all originating from the southern coastal areas of Korea, from a market every three months from Dec. 2001 to Sept. 2002, and determined the total polychlorinated biphenyl(PCB) levels by the sum of 26 individual congener levels. A GC-ECD system was applied for identification and quantification of these PCB congeners. Mussel showed the highest level in Sept. 2002 at 34.5 ng/g dry weight(d.w.). All species except mussel showed the lowest total PCB level in Dec. 2001 and their levels in tissue ranged from 0.6 to 5.5 ng/g d.w. The total PCB levels ranged from 0.8 to 17.3 ng/g in Mar. 2002, 2.2 to 9.5 ng/g in June 2002, and 1.8 to 34.5 ng/g d.w. in Sept. 2002. The principal congener group was penta-CBs, which accounted for 32% of the total PCBs, followed by hexa-CBs at 23%, and tetra-CBs at 21%.

Sole and Combined Usage of Ultra-sonication and Hydrogen Peroxide as Mitigation Techniques of Bio-fouling

  • Haque, Md. Niamul;Kwon, Sung-hyun
    • Journal of Environmental Science International
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    • v.25 no.10
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    • pp.1397-1405
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    • 2016
  • Mussels are stubborn organism attached to solid substrate by byssus threads and caused operational problems in utility of power generating stations. Sole and combined usage of ultrasonic (28 kHz- and 42 kHz- frequencies) and hydrogen peroxide ($H_2O_2$) has studied for control of blue mussel larvae and adult stage in seawater condition. A theoretical wo rking model using disinfection (Chick and Watson type) approaches is presented based on helpful results of experiments. This study also demonstrate that the combined treatment (ultra-sonication with $H_2O_2$) is overall highly efficient than individual treatment would, but on the basis of exposure time, the ultra-sonication was the most efficient among them. Therefore the development of sole and combined technique might be effective practical mitigation strategy against mussel attachment for water handling facilities.

Carotenoid Pigments of Bivalves 1. Comparison of Carotenoid Pigments from Muscle of Mussel and Blue mussel (이매패의 Carotenoid 색소성분 1. 홍합과 진주담치 근육의 Carotenoid 색소성분의 비교)

  • 하봉석;강동수
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.20 no.4
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    • pp.369-375
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    • 1991
  • Carotenoid pigments from muscle of mussel, Mytilus coruscus, and blue mussel edulis, were separated by thin layer and column chromatography. The isolated carotenoids were identified by comparative test with reference carotenoids, reduction with sodium borohydride, isomerization with iodine and absorption spectrophotometry. The carotenoid content in the muscle of mussel were 0.4mg% in male and 2.7mg% in female, and the carotenoids were composed of 23.4%, 33.4% mytiloxanthin, 26.3%, 22.5% 3, 4, 3'-trihydroxy-7', $8'-didehydro-{\beta}-carotene$, 24.8%, 22.8% pectenoxanthin, 14.0%, 9.9% pectenolone and 5.1%, 6.1% diatoxanthin in male and female, respectively. While, the carotenoid contents in the muscle of blue mussel were 1.1mg% in male and 3.2mg% in female, and the carotenoids were composed of 33.8%, 35.6% mytiloxanthin, 28.4%, 44.7% pectenoxanthin, 18.1%, 5.0% diatoxanthin, 9.7%, 8.7% pectenolone and 5.5%, 3.1%, 3, 4, 3'-trihydroxy-7', $8'-didehydro-{\beta}-carotene$ in male and female, respectively.

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Change of Paralytic Shellfish Poison Toxicity by the Treatment Method of Sea Mussel, Mytilus edulis (처리조건에 따른 진주담치 중 마비성 패류독의 변화)

  • 김지회;김성준;장동석;이명숙;허성호
    • Microbiology and Biotechnology Letters
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    • v.18 no.1
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    • pp.18-25
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    • 1990
  • Paralytic Shellfish Poison (PSP) is mainly produced by marine dinoflagellates such as Protogonyaulax sp. and Pyrodinium sp.. The PSP was known to be accumulated in digestive gland of shellfish as result of feeding toxic dinoflagellates. PSP illness when occurs when one eats PSP intoxicated shellfish. Therefore PSP is becoming as serious problem in food hygiene and shellfish cultivation industry. The purpose of this study was to develop detoxification method for utilization of PSP intoxicated sea mussel and prevent from PSP illness. The PSP was extracted with 0.1 N HCl solution from the submitted sea mussel, then the toxicity was measured by mouse assay according to Official Methods of Analysis of the Association of Official Analytical Chemists. No detoxification effect was observed by adding extracted juice of garlic and ginger. When the sea mussel homogenate was heated at various temperatures, the PSP toxicity was not changed significantly at below $70^{\circ}C$ for 60 minutes but it was decreased as the heating temperature was increased. For example, when the sea mussel homogenate was heated at 100, $121^{\circ}C$ for 10 minutes, the toxicity was decreased about 67 and 90%, respectively. When the sea mussel containing 645 $\mu$g PSP per 100g of edible meat was processed according to general shellfish canning procedure, the toxicity was decreased as the level of PSP undetected by mouse assay.

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