• Title/Summary/Keyword: Ocean culture

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Ethanol Production from Glycerol by the Yeast Pachysolen tannophilus Immobilized on Celite during Repeated-Batch Flask Culture

  • Cha, Hye-Geun;Kim, Yi-Ok;Lee, Hyeon-Yong;Choi, Woon Yong;Kang, Do-Hyung;Jung, Kyung-Hwan
    • Mycobiology
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    • v.42 no.3
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    • pp.305-309
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    • 2014
  • We investigated a novel process for production of ethanol from glycerol using the yeast Pachysolen tannophilus. After optimization of the fermentation medium, repeated-batch flask culture was performed over a period of 378 hr using yeast cells immobilized on Celite. Our results indicated that the use of Celite for immobilization of P. tannophilus was a practical approach for ethanol production from glycerol, and should be suitable for industrial ethanol production.

A terminological study of trilingual(Chinese-Korean-Japanese) presentation on food texture (한.중.일 3개 국어의 식품조직감 용어 비교연구)

  • Lee, Cherl-Ho;Yasuhiro, Ota;Rong, Huei-Chen
    • Journal of the Korean Society of Food Culture
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    • v.9 no.2
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    • pp.171-177
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    • 1994
  • The present study compares the texture describing terms used in East-Asian countries, China, Korea and Japan. The terms and definitions enlisted in the International Standard Sensory Analysis-Vocabulary, ISO 5492(second edition 1992) were used as the reference. It includes hardness, fracturability, chewiness, gumminess, viscosity, springiness, adhesiveness, granularity, conformation, moisture and fatness. The Chinese scripts used for the description of each textural terms in these three countries were compared and their native expressions were collected. The food items representing typical textual characteristics in the East Asian countries were also listed.

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First Finding of a Bivalve-Inhabiting Hydrozoan (Cnidaria, Hydrozoa) from Korea

  • Kubota, Shin;Lee, Jimin;Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
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    • v.35 no.2
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    • pp.57-62
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    • 2019
  • Eutima japonica Uchida, 1925, a bivalve-inhabiting hydrozoan was collected for the first time in Korea, associating with Mytilus galloprovincialis. The morphology of male medusae of this hydrozoan is clarified by culture and described as well as other developmental stages. As the present material from Korea is in good accord with that of the northern Japanese form of E. japonica, so the geographical distribution of the northern form of this species is widened, Japan, China and Korea. Green fluorescent protein distribution pattern of this medusa is also described and compared with that of the most related species Eutima sapinhoa Narchi and Hebling, 1975.

Effects of slow release gonadotropin releasing hormone analog on milt characteristics and plasma levels of gonadal steroids in greenback flounder, Rhombosolea tapirina

  • Lim, Han-Kyu
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.187-188
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    • 2003
  • Conadotropin releasing hormono analogs (GnRHa) have now been tested successfully a range of marine and freshwater species and been shown to be an effective strategy for improving milt quantity and quality (Mylonas and Zohar, 2001; Zohar and Mylonas, 2001; Lim et at, , 2002). Greenback flounder (Rhombosolea tapirina) is currently under consideration as a potential culture species in south-eastern Australia. (omitted)

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Performance of foam fractionator in seawater recirculating system

  • Lei Peng;Jo, Jae-yoon
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.221-222
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    • 2003
  • Typically, closed production system units are subject to an accumulation of fine suspended solids and dissolved organics (Weeks et at., 1992). Foam fractionation process is believed to be most effective in marine application for solids removal. In present experiment, the performance of foam fractionator for removal of solids, protein, and other dissolved materials was evaluated at different foam overflow heights and air flow rates in a pilot-scale recirculating aquaculture system for culture of Korean rockfish. (omitted)

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Growth, survival and pigmentation of turbot(Scophthalmus maximus) larvae fed live-prey enrichment

  • Liang Mengqing;Chang Qing;Wang Jialin;Park, Byeong-Dae;Kim, Kwang-Yang
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.199-200
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    • 2003
  • After more than 5 years of turbot culture in China, low percent survival and high occurrences of abnormally pigmented juveniles are still major problems for fish farmer. Much research has been directed toward determining the optimal feeding strategies and nutritional requirements for marine flatfish larvae, and considerable advances have been made. The most common live feeds include :Artemia, rotifer and copepods. (omitted)

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Axenic isolation procedure of the neutral spore and conchocelis from the seaweed Porphyra yezoensis

  • Park, Jae-Suk;Hong, Yong-Ki
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.151-152
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    • 2000
  • During in door or outdoor mass culture, Porphyra have been easily contaminated with bacteria, protozoa and microalgal species. Several axenic treatments for Porphyra thalli have been published (Polne-Fuller and Gibo 1984; Chen and McCracken 1993), but axenic techniques for neutral spores and conchocelis we not developed. In this work we describe the procedure for axenic isolation of neutral spores and conchocelis of Porphyra yezoensis (omitted)

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Growth activation of the microalgae Tetraselmis suecica by the aqueous of the seaweed Monostrama nitidium

  • Cho, Ji-Young;Hong, Yong-Ki
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.201-202
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    • 2001
  • Mass culture of microalgae as feed for mollusc, crustaceans and fish is an important components of the mariculture industry (Metting Jr., 1996) Growth activator for tetraselmis suecica were screened in methanol and water soluble extracts of several seaweed tissues. Also examined in this study were change in growth rate, biochemical composition, and digestion efficiency, of T.suecica cultured with and without the most effective of these extracts, the water soluble component extracted form M. nitidium. (omitted)

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Autotrophic Growth of Limonium spp. 'Ocean Blue' Plantlets In Vitro as Affected by PPF, NAEH and $\textrm{CO}_2$ Concentration (스타티스 ‘오션 블루’의 자가영양배양시 광도, 환기횟수 및 $\textrm{CO}_2$ 농도가 소식물체의 기내 생육에 미치는 영향)

  • 정기원;정병룡
    • Journal of Bio-Environment Control
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    • v.11 no.3
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    • pp.115-120
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    • 2002
  • Growth and development of Limonium spp.‘Ocean Blue’plantlets were studied under three levels of photosynthetic photon flux (PPF),70,150 and 220 $\mu$mol. $m^{-2}$ . $s^{-1}$ , two levels of $CO_2$ concentration, 500 and 1000 $\mu$mol. $m^{-1}$ , and two levels of number of air exchanges per hour (NAEH),0.1 $h^{-1}$ and 2.8 $h^{-l}$. Explants were obtained from photomixotrophically-micropropagated plantlets. Four explants per vessel were cultured under cool-white fluorescent lamps for 16 h. $d^{-1}$ at 25$\pm$11$^{\circ}C$ and 70~80% relative humidity. In treatments of 2.8 $h^{-1}$ NAEH, a 10 mm round hole made on the vessel cap was sealed with a microporous filter and two $CO_2$ concentrations in the culture rooms were provided from a liquefied $CO_2$ tank. Fresh and dry weights, height, length of the longest root, number of loaves, and leaf area significantly increased with increasing PPF and especially, $CO_2$ concentration. Growth was enhanced by a 2.8 $h^{-1}$ NAEH. Overall, treatment with a 220 $\mu$mol. $m^{-2}$ . $s^{-1}$ PPF and a 1000 $\mu$mol. $m^{-1}$ $CO_2$ resulted in the most vigorous growth of Limonium spp. ‘Ocean Blue’ plantlets.s.

Bioethanol Production from Hydrolysate of Seaweed Sargassum sagamianum (모자반 가수분해물을 이용한 바이오 에탄올 생산)

  • Yeon, Ji-Hyeon;Seo, Hyeon-Beom;Oh, Sung-Ho;Choi, Won-Seok;Kang, Do-Hyung;Lee, Hyeon-Yong;Jung, Kyung-Hwan
    • KSBB Journal
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    • v.25 no.3
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    • pp.283-288
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    • 2010
  • We investigated the feasibility of bioethanol production from hydrolysate of brown seaweed Sargassum sagamianum. Prior to bioethanol production using yeasts, six yeast strains were compared and the best ones in terms of the ethanol production levels were selected. Pichia stipitis ATCC 7126, Pichia stipitis ATCC 58784, and Pichia stipitis ATCC 58376 were superior to others in terms of ethanol production. These yeast strains were used for producing bioethanol by the shaking bottle culture and the fermentor culture. Out of approximately 30 g/L reducing sugar, about 3~6 g/L and 4~7 g/L bioethanol were produced in the bottle culture and the fermentor one, respectively. Furthermore, it was observed that around 12~28 g-bioethanol was produced from 1 kilogram of Sargassum sagamianum. Compared with those previously published, these data were almost three to eight times higher in value.