• Animal Systematics, Evolution and Diversity
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• 제30권4호
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• pp.260-266
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• 2014

Xanthid crabs, decapod crustacean, with the black coloured fingers, are easily found under rocks or stones in the intertidal or subtidal zones. Two xanthids, Etisus laevimanus Randall, 1840 and Paraxanthias elegans (Stimpson, 1858), were newly reported in Korean waters as part of continuous taxonomic studies on crabs. The genus Paraxanthias Odhner, 1925 was also reported for the first time in Korea. Of these, the examined specimen of P. elegans showed eight feathery hairs on the subdistal tip of the first gonopod, which differs from the description of Dai and Yang at 1991. Here, the descriptions and illustrations of these species are provided. Korean Xanthoidea currently consists of 30 species belonging to 25 genera.

• 한국균학회지
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• 18권2호
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• pp.70-76
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• 1990

Cellulose를 분해하는 균주를 자연토양으로부터 분리하여 형태적 관찰, 생리적 특성 등을 검토하였고 F.P Cellulase, CMCase, ${\beta}-glucosidase$의 활성을 측정하였다. 11속, 21종이 동정되었으며 속분류검색에 있어 기본적인 차이점을 보이는 5종을 선정하였다. 동정 결과는 Acremonium sp., Trichoderma viride., 미동정된 Trichoderma SP., Verticillium intertexum., verticillium malthousei 이었다. 효소활동은 Trichoderma viride로 동정된 균주가 비교적 높아보였다.

• 한국수산과학회지
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• 제23권1호
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• pp.51-60
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• 1990

Some species of dinoflagellates were considered as one of the causative organisms of PSP(Paralytic Shellfish Poison) or DSP(Diarrhetic Shellfish Poison). Fish and shellfish are intoxicated by feeding of toxic plankton, sometimes human is intoxicated by feeding on these intoxicated fish and shellfish. In past ten years, the physiological and ecological studies of the toxic plankton has been investigated for development of monitoring system and preventation and control measures of PSP. However, in our country still little is known on a research for the toxic dinoflagellates. This paper reviews the general biology, taxonomic problem, physioecology and culture method of the toxic planktons such as Protogony-aulax and Dinophysis.

• 한국치위생학회지
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• 제1권2호
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• pp.193-200
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• 2001

An appropriate amount of samples, collected from three each paddy forest, field and riverside soil near Taegu city, was suspended in sterile water and then diluted in order to isolation of antagonistic to oral cancer. The diluted samples were inoculated on separating medium in the routing spreading method. So, seven hundred and eighteen strains were isolated on HV agar and 220 strains were on methanol medium from soil samples. So, during the screening of anti-oral cancer activity from soil, we isolated microorganisms showing powerful antagonistic activity. Among them, No. 78 strain exhibited the most strongly anti-oral cancer activity. Microbiological properties were investigated by the methods described in the Bergey's Manual of Systematic Bacteriology and experimental methods of identification of actinomycetes by Hamada et al. As a result, a methylotrophic actinomycetes strain No. 79 was estimated as Amycolatopsis sp. based on taxonomic studies.

• 한국미생물·생명공학회지
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• 제25권6호
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• pp.586-591
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• 1997

In the course of screening for the tipA promoter-inducing substances, we isolated an active compound, sulfomycin Ia, from the mycelium of a microorganism designated 50634. The producing organism was identified as Streptomyces sp. on the basis of taxonomic studies. Sulfomycin Ia was purified from mycelial extract by silica gel column chromatography, LH-20 column chromatography, silica gel TLC, and preparative HPLC. The molecular weight of sulfomycin Ia was determined to be m/z 1129 (M+Na)$^{+}$ by FAB mass measurement and $^{1}$H NMR spectroscopic analysis. The structure was assigned as a derivative of sulfomycin I with thiazole, methyloxazole, oxazole, and pyridine rings by $^{1}$H NMR spectral data.

• 한국미생물·생명공학회지
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• 제19권6호
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• pp.624-630
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• 1991

토양에서 phenol 분해균주를 65주 분리, 동정하였다. 균주의 형태, 생화학 및 형질특성 46항목을 parameter로 하여 simple matching(Ssm)지수 산출방법으로 유사도지수를 구하고, 비가중평균결합법(unweight pair group method with arithmethic average)으로 dendeogram을 작성하였다. 분리균주는 70% 유사도에서 3개의 major cluster와 3개의 minor cluster로 분류되었으며, 우점종으로는 Azotobacter Peudomonas 및 Flavobacterium 속으로 나타났다.

• 한국미생물·생명공학회지
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• 제23권6호
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• pp.723-729
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• 1995

A flocculating sugar tolerant yeast strain was isolated from fermenting Takju. This strain was identified as Saccharomyces cerevisiae CA-1 according to the Lodder's yeast taxonomic studies. The isolated yeast could grow in 50% glucose and in 7% ethanol in the YPD medium. It's optimal growth temperature, initial pH, shaking rate and initial glucose concentration for ethanol fermentation showed 35$\circ$C, 4.5, 150 rpm, 15%, respectively. Ethanol concentration was 63 g/l in 20% glucose after 24 hours, fermentation yield was 0.49 g-ethanol/g-glucose in 10% glucose after 24 hours and ethanol productivity was 3.09 g/l$\cdot $h in 10% glucose after 12 hours in batch fermentation. Repeated batch fermentation was possible for over 50 days and ethanol yield, ethanol productivity and substrate conversion rate were 0.39-0.50 g/g, 1.63-2.08 g/l$\cdot $h and more than 99%, respectively during these periods.

• 한국패류학회지
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• 제32권2호
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• pp.141-147
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• 2016

In addition to the Arcidae (Lutaenko, 2015), a collection of Mytilidae, Ungulinidae and Tellinidae from Japan, identified by the German malacologist C.E. Lischke, was found and studied at the Zoological Institute, Russian Academy of Sciences, St. Petersburg. This collection is very important for regional malacological studies in Japan, Korea and China as it contains type material and vouchers. Syntypes of Mytilus atratus Lischke, 1871 (= Xenostrobus atrata (Lischke, 1871)) and vouchers of Tellina diaphana Deshayes, 1855 (= Serratina diaphana (Deshayes, 1855)), Tellina nitidula Dunker, 1860 (= Nitidotellina hokkaidoensis (Habe, 1961)), and "Diplodonta orbella Gould, 1851" (= Diplodonta gouldi Yokoyama, 1920)) are figured with taxonomic and nomenclatural comments. No other voucher or type specimens used in the compilation of the Japanische Meeres-Conchylien were located in the entire bivalve collection.

• 한국미생물·생명공학회지
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• 제23권2호
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• pp.209-213
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• 1995

During the screening of inhibitors of melanin biosynthesis from microbial secondary metabolites, a fungal strain MR-93 which was capable of producing high level of an inhibitor was selected from plant leaf. Based on taxonomic studies, the fungus could be classified as a strain of Trichoderma sp.. The active compound (MR-93D) was purified from the culture broth by Diaion HP-20 column chromatography, ethylacetate extraction, Sephadex LH-20 column chromatography and HPLC. The inhibitor was identified as 4-hydroxy-8-isocyano-l-oxaspiro[4-4]cyclonon-8-en-2- one by spectroscopic methods of UV, $^{1}$H-NMR, ESIMS and IR. MR-93D showed a strong tyrosinase inhibitory activity with 0.03 $\mu$g/m of IC$_{50}$ value. It also inhibited melanin biosynthesis with 35 mm inhibition zone at 30 $\mu$g/paper disc in Streptomyces bikiniensis, a bacterium used as an indicator organism in this work.

• 한국미생물·생명공학회지
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• 제14권5호
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• pp.377-383
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• 1986

토양으로부터 carboxymethyl cellulase 및 intra-cellular $\beta$-glucosidase생산능력이 높은 방선균 No. 109균주를 분리하고 이 균주의 배양상 내지는 형태적 특성, 생리적 특성 그리고 세포벽 구성성분 등을 조사, 균동정을 행한 결과 No. 109 분리균은 Streptomyces tanashiensis 또는 그 유연균으로 동정되었다.