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Production of Bio-ethanol from Brown Algae by Physicochemical Hydrolysis (물리화학적 가수분해에 의한 갈조류 바이오 에탄올 생산)

  • Lee, Sung-Mok;Kim, Jae-Hyeok;Cho, Hwa-Young;Joo, Hyun;Lee, Jae-Hwa
    • Applied Chemistry for Engineering
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    • v.20 no.5
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    • pp.517-521
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    • 2009
  • In this study, the productivity of bio-ethanol obtained from various brown-algae raw materials was examined. Brown-algae polysaccharide, consisting of alginate and laminaran, is usable for the effective production of bio-ethanol if it is hydrolyzed to monomer unit. The objective of this study is the production of bio-ethanol from brown-algae using a heat-treatment and acid-treatment. Bio-ethanol was produced by Saccharomyces cerevisiae KCCM1129 and Pachysolen tannophilus KCTC 7937 strains. Laminaran japonica was higher than Sagassum fulvellum and Hizikia fusiformis, Laminaran japonica optimum pre-treatment is used to derive the ethanol production of Saccharomyces cerevisiae KCCM1129 and Pachysolen tannophilus KCTC 7937 respectively 9.16 g/L, 9.80 g/L. The maximum output of Sargassum fulvellum and Hizikia fusiformis was very low as 0.22 g/L.

A Case of Infantile Hepatic Hemangioendothelioma Incidentally Detected during the Evaluation of Galactosemia (선천성 갈락토스혈증으로 오인된 신생아 간 내 혈관내피종 1례)

  • Lim, Ryoung-Kyoung;Byun, Shin-Yun;Park, Seong-Shik;Kim, Young-Don
    • Neonatal Medicine
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    • v.17 no.1
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    • pp.136-140
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    • 2010
  • Galactosemia is a group of inherited enzyme deficiencies characterized by increase in the blood galactose levels. This condition may be associated with deficiencies of galactose-1-phosphate uridyl transferase, galactokinase, or uridine diphosphate galactose-4-epimerase. However, the elevated galactose identified by neonatal screening tests has several other possible etiologies, including hepatic hemangioendothelioma, hepatic hemangioma, and patent ductus venosus with hypoplasia of the portal vein. We report a 13-day-old Korean male with hepatic hemangioendothelioma, which was incidentally detected during the evaluation for suspected galactosemia. Laboratory studies revealed that mildly elevated levels of galactose, galactose-1-phosphate and alpha- fetoprotein, at the time of admission, were graduallydecreased to the normal range over the 6 months of observation. Ultrasonography showed a well-defined heterogeneous hypoechoic mass in the liver, and magnetic resonance imaging study showed multiple enhanced mass lesions, which was compatible with the diagnosis of a hepatic hemangioendothelioma. Thus, hepatic imaging, especially ultrasonography, should be performed if neonatal screening suggests galactosemia.

Fatty Acid Compositions of Sea Algaes in the Southern Sea Coast of Korea (남해안 해조류의 지방산 조성)

  • 최강주;최선남
    • The Korean Journal of Food And Nutrition
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    • v.15 no.1
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    • pp.58-63
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    • 2002
  • Lipid contents and fatty acid compositions of 16 kind sea algaes in the southern sea coast of Korea were analyzed to evaluate nutrient significance of total polyene, n-3 polyenes and n-6 polyene fatty acids. Total lipid contents were 0.58 ∼ 3.00% in 9 kinds of brown algaes, 0.47 ∼ 2.16% in 5 kinds of red algaes and 0.55 ∼2..99% in 2 kinds of green algeas. N-3 polyenes and n-6 polyenes of the fatty acid compositions were 1.46∼25.67% and 0∼48.51% in the brown algaes, 1.17∼21.91% and 0.28 ∼29.35% in the red algaes, and 3.67%∼ 10.61% and 4.10 ∼ 8.66% in the green algaes, respectirely. The fatty acid contents and compositions of n-3 polyenes and n-6 polyenes, monoenes and saturates were vary different in the algae groups and sepecies.

Studies on Resistance to Septoria Brown Spot(Septoria glycines Hemmi) in Native Soybean Collection (재래종 대두의 갈문병 저항성에 관한 연구)

  • Kwon, S.H.;Oh, J.H.;Kim, J.R.
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.25 no.1
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    • pp.47-53
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    • 1980
  • Of 1, 428 entries examined to locate gene sources resistant to Septoria brown spot from the Korean native soybean collection, most lines were evaluated as highly susceptible, showing numerous leaf spots with surrounding yellowing tissue, while 136 lines of the entries showed the leaf spots without the yellowing. However, leaf defoliation was so much higher in inoculated soybean plants than those of uninoculated, regardless of leaf yellowing that resistance to Septoria brown spot could not be characterized by the lesion type. Various yield composing characters were negatively correlated to the leaf defoliation, suggesting that early defoliation incited by Septoria brown spot might result in significant yield reduction in soybean.

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The Content of Minerals in Algae (해조류(海藻類)의 무기성분(無機成分))

  • Lee, Jong-Ho;Sung, Nak-Ju
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.9 no.1
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    • pp.51-58
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    • 1980
  • Sixteen species of algae (4 species of green algae, 5 species of brown algae and 7 species of red algae) were collected from the coast of Chungmu, Gyeongnam, from June to October, 1976. The content of minerals in algae were analyzed by Atometic Absorption Spectrophotometer. The results were as followed 1) The content of Iron and Nickel in green algae were abundant, and those of Lead, Nickel and Manganese in brown algae were low. 2) The content of Cadmium were in the range of 0.58-1.04ppm (average: 0.85ppm) in green algae, 0.32-2.10ppm (average: 1.08ppm) in brown algae and 0.54-1.70ppm (average: 1.04ppm) in red algae. The content of Cadmium were in the range of 0.3-0.6ppm in laver, Porphyra tenera, sea mustard, Undaria pinnatifida, and tangle, Laminaria japonica, but its content was lower than those expected. 3) The content of Lead were in the range of 0.67-1.40ppm (average: 1.03ppm) in green algae, 0.60-1.00ppm (average: 0.82ppm) in brown algae, 0.56-2.40ppm (average: 1.28ppm) in red algae and its content in algae were lower than in fish and shellfish. 4) The content of Copper were in the range of 10.8-24.2ppm (average: 18.95ppm) in green algae, 7.4-24.6ppm (average: 18.16ppm) in brown algae, 6.4-31.2ppm (average: 19.94ppm) in red algae and those content were considerably abundant except for some algae. 5) The content of Nickel were in the range of 5.4-16.6ppm (average: 9.1ppm) in green algae, 1.0-4.4ppm (average: 2.32ppm) in brown algae and 0.7-4.6ppm (average: 2.59ppm) in red algae. 6) The content of Iron were in the range of 686.4-1159.0ppm (average: 916.5ppm) in green algae, 131.0-499.2ppm (average: 310.16ppm) in brown algae and 156.0-530.4ppm (average: 248.2ppm) in red algae. Especially, that of Iron in green algae showed higher value than in any other. 7) The content of Manganese were in the range of 48-221ppm (average: 157.25ppm) in green algae, 12-65ppm (average: 41ppm) in brown algae and 72-162ppm (average: 121ppm) in red algae. Especially, that of Manganese in brown algae showed lower value than in any other. 8) The content of Zinc were in the range of 191.3-451.1ppm (average: 290.05ppm) in green algae, 89.9-374.2ppm (average: 202.64ppm) in brown algae and 106.4-281.4ppm (average: 188.93ppm) in red algae. 9) The content of Magnesium were in the range of 0.48-1.83% (average: 1.27%) in green algae, 1.04-1.71% (average: 1.21%) in brown algae and 0.42-1.24% (average: 0.097%) in red algae. 10) The content of Fluorine were in the range of 29.2-92.7ppm (average: 53.03ppm) in green algae, 33.3-43.5ppm (average: 39.18ppm) in brown algae and 32.4-59.0ppm (average: 44.84ppm) in red algae.

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