Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Microbiology
Journal Basic Information
Journal DOI :
The Microbiological Society of Korea
Editor in Chief :
Volume & Issues
Volume 20, Issue 4 - Dec 1982
Volume 20, Issue 3 - Sep 1982
Volume 20, Issue 2 - Jun 1982
Volume 20, Issue 1 - Mar 1982
Selecting the target year
Studies on the Decomposition of Environmental Pollutants by Utilizing Microorganisms
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 53~66
1. When Chong Ju and Chung Ju soils possessing different physicochemical properties were treated with 500 ppm of TOK and incubated in flooded anaerobic condition for 2, 4, and 6 months, respectively, they produced 4-Chloro-4'-amino diphenyl ether, 2,4-Dichloro-4'-amino diphenyl ether(amin-TOK), N-[4'-(4-Chlorophenoxy)] phenyl acetamide, and N-[4'-(4-Chlorophenoxy)] phenyl formamide as the metabolities. This result indicates that TOK undergose the reduction of its
group, dechlorination, acetylation, and formylation under this condition. The cleavage of ether linkage does not occur. In addition, TOK degrades more readily in Chung Ju soil which is characterized by pH 6.43 and higher contents of
and C.E.C. than in Chong Ju soil which is lower in pH,
, and C.E.C. 2. In the aerobic incubation of TOK of 25ppm in Chung Ju soil suspension for 21 days, the ratio of the resulting metabolites, TOK : amino-TOK : 4-Chloro-4'-amino diphenyl ether was 100 : 130 : 76. Meanwhile, in the 42 day incubation, the ratio was 100 : 19 : 5, which indicates that TOK in aerobic condition dose not necessrily degrade as a function of the incubation period. 3. The citrate buffer extract of Chung Ju soil has the capability of degrading TOK, which was verified to be due to the action of the microorganisms involved. 4. Twelye strains of soil bacteria were isolated from the TOK-treated soils. In the incubation of TOK in pure cultures of the respective isolates, the strain T-1-1 isolated from Chong Ju soil had almost no degradability whereas the strain T-2-3 was the most potent. The degradation of TOK by the isolates constituted mostly the reduction of the nitro group to amino group. 5. In a test for the degradability of TOK by some selected microorganisms, Pseudomonas species were more potent than fungi. Yet, Isolate B which had been isolated from Chung Ju soil suspension was the most potent.
Effect of Fermentation Temperature on the Production of high content Alcohol
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 67~72
The effect of fermentation temperature on the production of high content alcohol has been investigated with high substrate concentration. The maximum specific growth rate,
which was the highest, whereas the maximum biomass concentration waas 8.7g/l at
, at the growth rate lower than at
. Approximately 140g/l of ethanol was produced in the temperature range of 20 to
with nearly complete comsumption of the substrate. Extended fermentation time has been required at lower temperatures, however, for the maximum values of biomass concentration and alcohol content, hence higher ethanol productivity, as the temperature was elevated to
. The viability of yeasts was greatly improved by lowering the fermentation temperature down to
and also extended survival of the cells has been observed at lower fermentation temperatures, although the ethanol concentration of both waas higher.
Identification of Streptomyces species antagonistic to Fusarium solani causing Ginseng root rot
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 73~79
Among 131 isolates of Strptomyces obtained from ginseng cultivating soil, the two isolates ST59 and ST129 showing high antagonistic activity to Fusarium solani(Mart.) Appel & We. causing ginseng root rot were identified. The two isolates were identified Streptomyces alboniger Porter, et al. and Strptomyces reseolilacinus Pridham, et al., respectively, based on mrophology, cultural, and physiological characteristics on various culture media. Spore chains of ST59 and ST129 were flexuous(RF) and coiled(S). Spore surfaces of two isolates were all smooth. Aerial mass color of ST59 was white series and ST129 red series.
Fungs flora of paddy fields in Korea. - III. Ascomycetes -
Kyung Hee MIN ; Tadayoshi ITO ; Tatsuo YOKOYAMA ;
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 80~88
Soil microfungi of the paddy fields in Korea were isolated by the dilution plate method from soil samples of two selected sites. It was concluded that 14 species among 30 species identified were undescribed fungi in Korea. Among them, 7 species of Ascomycetous fungi were described in this paper as new to Korea. Species of the genus Talaromyces were found to be dominant in paddy field soils and they consisted of Talaromyces flavus var. flavus, T. panasenroi, T.stipitalus and T.trachyspermus. Special attention was paid on the predominant occurrance of Westerdyrella multispora which produced globose to subglobose pseudothecia containing 32 spored asci with multiseptate, cylindrical ascospores. A cellulose decomposing ascomycete, Chaetomium globosum, was also found which produce black, ostiolate perithecia furnished with numerous, wavy to undulate terminal hairs. They contain evansecent, clubshaped, 8 spored asci with lemon-shaped, olive brown ascospores. Another ascomycte, Emericellopsis terricola with Acremonium anamorph, waas isolated from two sites.
Induction and Chatacterization of pKM101 Mutants in Salmonella typhimurium
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 89~97
Mutants of plasmid pKM101 modified to enhance mutagenesis were induced and characterized in Salmonella typhimurium. The pKM101 mutant plasmid were transferred normally and stably maintained in cells. They had modified in their ability (i) to enhance the reversion of both point and frameshift mutations, (ii) to protect the cell against UV-irradiation and chemical mutagen treatment, (iii) of ampicillin resistance. A similar modification in enhancement of reversion was also observed in a
strains. These results indicated that mutator effect of pKM101 was coded by one plasmid gene.
Isolation and Identification of Detergents Degrading Bacteria in the Han River Downstream
The Korean Journal of Microbiology, volume 20, issue 2, 1982, Pages 98~104
Detergent-degrading bacteria isolated from the Han River downstream running through the center of Seoul area were identified. Samples were monthly taken from the surface waters at four designated sites from October, 1980 to August, 1981. Isolated strains were characteristically Gram-negative bacteria in all, and they were classified within 18 genera, 43 spceies. The dominant strains of detergent -degrading bacteria were within geneus Pseudomonas. On the regional distribution of detergent-degrading bacteria, Euterobacteriaceae and genus Aeromonas were suddenly increased at the Third Bridge of site 2 and the First Bridge of site 3, and others were almost the same regardless of sites.