• Title/Summary/Keyword: Bergey's manual

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Isolation and Identification of Streptomyces californicus KS-89 Produced Bluish Purple Pigment (청자색 색소를 분비하는 Streptomyces californicus KS-89의 분리 및 동정)

  • 류병호;지영애;박우열;김동규;박법규
    • Microbiology and Biotechnology Letters
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    • v.18 no.5
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    • pp.443-448
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    • 1990
  • The objective intended for this study is that of providing a fairly practical guide to the use of natural pigment in the food industry. Streptomyces isolated from soil were carried out test for the excretion of their bluish purple pigment. One strain of Streptomyces, strain KS-89 showed a high production of bluish purple pigment on the glycerol starch-glutamate medium. The morphological and physiological characteristics of the strain KS-89 were studied according to the methods of Bergey's manual, Nonomura's classification, and Ridham and Lyons classification. Based on the results obtained in these experiments, strain KS-89 was identified as Streptomyces californicus.

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Numerical Classification of Phototrophic Nonsulfur Bacteria (수리분류학적 방법에 의한 비유황 광합성 세균 분류)

  • 이현순;이상섭;윤병수
    • Korean Journal of Microbiology
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    • v.23 no.3
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    • pp.235-240
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    • 1985
  • A total of 10 main characters of 16 species of family Rhodospirllaceae were phenetically and cladistically analyzed by Farris' method. The obtained phenogram and cladistic tree were compared with Bergey's manual and other papers. The results supported that the system of 5 subgroups (genera) is available in family Rhodospirllaceae and indicated that close affinities between Rhodospirllum tenue and Rhodopseudomonas gelatinosa and between Rhodomicrobium vannielii and other species of genus Rhodopseudomonas were proved.

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Taxonomic Study of Bacillus coagulans by Deoxyribonucleic Acid-Deoxyribonucleic Acid Hybridization Technique (DNA-DNA Hybridization에 의한 Bacillus coagulans의 분류학적 연구)

  • Chung, Chi-Kwan
    • Microbiology and Biotechnology Letters
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    • v.4 no.4
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    • pp.166-178
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    • 1976
  • Taxonomic study of 11 strains of Bacillus coagulans and 14 strains of 13 spccies of Bacillus by deoxyribonucleic acid (DNA)-DNA hybridization were conducted. Among the 11 strains of B. coagulans, 6 were isolated from soil and the rest were the authentic strains obtained from American Type culture collection (ATCC) or the Institute for Fermentation, Osaka (IFO). All strains were examined to confirm as they are expected species of B. coagulans by the methods of Cordon et al. according to Bergey's Manual (8th ed.). The intraspecific DNA homology indexes among the 11 strains of B. coagulans using strain ATCC 7050 as the standard ($^3$H labeled input DNA) showed 76% or, more, respectively. These findings accorded well with the results of the conventional taxonomic study according to the Bergey's Manual. The interspecific DNA homology indexes between B. coagulant strain ATCC 7050 and the type cultures of B. subtilis (168), B. licheniformis (IFO 12107), B. pumilus (IFO 12110), B. firmus (ATCC 14575), B. lentus (ATCC 10840), B. circulans (ATCC 4513), B. macelans (ATCC 8244), B. polymyxa (ATCC 842), B. sphaericus (ATCC 14577), B. brevis (ATCC 8246, IFO 12334), B. laterosporus (ATCC 64), and B. pantothenticus (ATCC 14576) respectively, showed 2 to 4%, while that of between B. coagulans ATCC 7050 and Escherichia coli K-12 was less than 1 %.

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Isolation of Streptococcus thermophilus and Lactobacillus delbrueckii as Starter Culture Candidate Originated from Indonesian Cow's Milk

  • Andrian, Danish;Rizkinata, Denny;Susanto, Tan Steven Ryan;Lucy, Jap;Jan, Tan Tjie
    • Microbiology and Biotechnology Letters
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    • v.46 no.3
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    • pp.201-209
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    • 2018
  • Streptococcus thermophilus, Lactobacillus delbrueckii, Lactobacillus fermentum and Lactobacillus casei were successfully isolated from indigenous Indonesian fresh milk based on the general morphological and biochemical classification as described in Bergey's manual. Verification was conducted by sequencing of 16S rRNA after selection using the classification method mentioned in the manual. All isolates exhibited antimicrobial activity against Escherichia coli and Staphylococcus aureus in the well diffusion test. The susceptibilities of the isolated S. thermophilus 24/S1 and L. delbrueckii 94/L4 against 22 different antibiotics were determined by the disc diffusion method and variable susceptibility patterns were observed. Both isolates were susceptible to amoxicillin, the most commonly prescribed antibiotic, and resistant to sulfonamide. The presence of a plasmid was not detected after extraction. S. thermophilus 24/S1 and L. delbrueckii 94/L4 starter cultures were prepared for yogurt production after 9.5 h of incubation and the yogurt was evaluated for its flavor and quality by 30 volunteers. A score of $4.93{\pm}0.45$ out of 7 was obtained as compared to the yogurt prepared using commercial starter cultures which yielded a score of $4.76{\pm}0.30$ out of 7.

Isolation and Cultural Characterization of Antibacterial Substance Producing Microbes (항균성 물질 생산 균주의 분리 및 배양학적 특성)

  • Park, Seok-Kyu;Cho, Young-Su;Shon, Mi-Yae;Gal, Sang-Wan;Lee, Sang-Won
    • Food Science and Preservation
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    • v.14 no.2
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    • pp.194-200
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    • 2007
  • In order to enhance the functionality and storage period of traditional fermented foods, the strain CH-14, which To enhance the quality of traditional fermented foods, and to lengthen acceptable storage periods, a bacterial strain, CH-14, showing potent enzyme activities and antibacterial capabilities, was isolated and characterize4 The bacterium wn Gram-positive, catalase-positive, oxidase-negative, formed endospores, expressed flagella, was rod-shaped, and had dimensions of 0.5 0.7m and 3.5 4.2m. The bacterium CH-14 was identified as Bacillus subtilis using Bergey's Manual of Systematic Bacteriology, Bergey's Manual of Determinative Bacteriology, and an API 50 CHL Carbohydrate Test Kit. An optimum growth medium contained 2% (w/v) cellobiose as a carbon source, a mixture of 0.5% (w/v) yeast extract and 0.5% (w/v) peptone as nitrogen sources, and 0.05% (w/v) $MgSO_4{\cdot}7H_2O$. The optimal culture temperature and the optimal initial pH were in the ranges of 30 $45^{\circ}C$ and 4.5 10.0, respectively. Maximum production of the antibacterial substance occurred after 24h of culture. The minimum inhibitory concentrations of the antibacterial substance were 5mg bacterial dry weight/mL against E. coli and P. mirabilis, and 10 mg/mL against S. aureus, S. enteritidis and V. parahaemolyticus.

Identification of Phototrophic Bacterium T-20 (광합성(光合成) 세균(細菌) T-20주(株)의 동정(同定))

  • Hyun, Moon Sik;Whang, Kyung Sook;Shin, Gwan Chull
    • Korean Journal of Agricultural Science
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    • v.19 no.1
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    • pp.28-32
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    • 1992
  • Phototrophic bacteria T-20 investigated in the present report was isolated from Thailand oil, Cells of the bacterium were rod-shaped. measured $0.6{\sim}0.7{\mu}m$ wide, and $2.3{\mu}m$ long. A color of cell suspension was red, and the long wavelength absorption maxima of the bacteriochlorophyll measured in 870nm. Substrates utilized as carbon sources: citrate, aspirate, glutamate, and fructose: unique for this strain is the liquefaction of gelatine, Ubiquinone Q-8 was also found. Rhodocyclus gelatinosus, which was reported in Bergey's Manual of Systematics Bacteriology, was corresponded to T-20.

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DNA-DNA hybridization에 의한 Bacillus coagulans의 분류학적 연구

  • 정지관
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • 1976.10a
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    • pp.187.4-188
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    • 1976
  • 서로 다른 11주의 Bacillus coagulans와 13종의 Bacillus 속 14주를 deoxyribonucleic acid (DNA) -DNA hybridization method에 의해서 분류학적인 연구를 하였다. 사용한 B. coagulans 11주종 6주는 흙에서(일본 오사까교회) 분리했고 나머지 5주는 ATCC, IFO에서 authentic strains을 얻어서 사용했다. 사용된 B. coagulans는 Bergey's Manual(8 thed)에 의거 Grodon씨들의 방법으로 동정한 결과 B. coagulans로서 확인되었다.(중략)

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A streptococcal Disease of Cultured Flounder, Paralichthys olivaceus (양식(養殖) 넙치의 연쇄구균증(連鎖球菌症))

  • Lee, Chang-Hoon;Ha, Dong-Soo
    • Journal of fish pathology
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    • v.4 no.2
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    • pp.71-77
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    • 1991
  • From August to October of 1991, a bacterial disease occurred in cultured flounder, of 0 age Paralichthys olivaceus, in Cheju-do. Typical symptoms of the diseased fish were the hemorrage of the opercle, discoloration of the body, exophthalmus and hemorrhage of the eyes. The causative organism isolated from diseased fish was identified as a $\beta$-hemolytic Streptococcus. This bacterium was not identical with any known Streptococcus species listed in Bergey's Manual of Determinative Bacteriology 8th edition. However there was a close similarity between this species and Streptococcus sp. isolated from flounder and reported by Tashio (1983). The isolated bacteria streptococcus sp. showed very high sensitivity to the SM and EM, however, it resisted to the high concentration of Penicillin. In the pathagenicity analysis, about $1.1{\times}10^9$, $1.1{\times}10^7$, $1.1{\times}10^5$, $1.1{\times}10^3$, $1.1{\times}10^1cells$/100g B.W of isolated bacteria were injected percutaneouly. The results showed that this inoculation size $1.1{\times}10^3cells$/100g B.W was the threshold for the induction of mortality in pathogenicity analysis.

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Isolation and Identification of the Genus Rhizobium (한국산 Rhizobium 속의 분리 및 동정)

  • Ha, Nam-Ju;An, Tae-Kun;Lee, Yeong-Nok
    • Korean Journal of Microbiology
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    • v.22 no.2
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    • pp.73-76
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    • 1984
  • From the root nodules of legumes distributed in South Korea, 74 strains of Rhizobium were isolated. The strains isolated were identified based on Bergey's Manual and Vincent's identification key. Following 5 species of Rhizobium were confirmed. R. leguminosarum, R. meliloti, R. phaseoli, R. trifolii, and R. japonicum

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Isolation of Fibrinolytic Enzyme Producing Strains from Kimchi (김치에서 혈전용해효소 생산균주의 분리)

  • Noh, Kyoung-A;Kim, Dong-Ho;Choi, Nack-Shick;Kim, Seung-Ho
    • Korean Journal of Food Science and Technology
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    • v.31 no.1
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    • pp.219-223
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    • 1999
  • Various bacterial strains that secret extracellular fibrinolytic enzyme were screened from kimchi, a traditional vegetable fermented food in Korea. Three microbes of them were identified to be Bacillus amyloliquefaciens, Bacillus brevis and Micrococcus luteus strains according to Bergey's Manual of Systematic Bacteriology. It was found that B. amyloliquefaciens, B. brevis and M. luteus produced 2.58, 1.48 and 2.03 plasmin unit/mL of fibrinolytic enzyme, respectively. All extracellular proteases showing the fibrinolytic activity were confirmed by SDS-PAGE and fibrin zymography assay and we propose that some of the fibrinolytic enzymes from this work are novel enzymes.

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