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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 15, Issue 4 - Dec 1977
Volume 15, Issue 3 - Sep 1977
Volume 15, Issue 2 - Jun 1977
Volume 15, Issue 1 - Jan 1977
Selecting the target year
Aspergillus itaconicus and Aspergillus unguis with New Addition to the Korean Flora
Lee, Yung Nok ; Kim, Nak Jung ; Kang, Deog Soo ;
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 1~8
Two hundred and twenty five strains which belong to the genus Aspergillus were isolated from specimens collected throughout the southern coastal areas of Korea, Fifteen species and one variety throughout the nine species groups including A. itaconicus and A.unguis, which are unrecorded in Korea, were identified according to Raper-Fennell's classification key.
Properties of Xylose Isomerases in Cell Free Extracts From Streptomyces canus and Streptomyces malachiticus
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 9~19
Xylone isomerase (D-xylose ketol-isomerase, EC 5,3,1,5) have been demonstrated in the cell-free extracts of Stroptomuces canus and Streptomuces malachiticus grown in the presence of xylose. Xylose, glucose and ribose served as substrates for the enzymes of the two strains with respective
values of 22, 130, 290 mM (S. canus) and 7,83,637 mM(S.malachiticus), and
values of 1,000, 0.087,
protein (S. canus) and 0.312, 0.083, 0.500.
moles/min/mg protein (S. malachiticus). L-Rhammose was also isomerized by the crude enzyme solutions of the two strains. The maximal activities of the two xylose-isomerases were observed at pH 7.5 and
. The xylose isomerase activities of the two strains were activated two-three times by
as that of control, partially activated by
and inhibited by
. Particulary, the addtion of
stimulated xylose-isomerizing activities, but inhibited glucose-isomerizing activities in both strains. However,
inhibited xylose-isomerizing activities, while stimulated glucose-isomerizing activities of the enzymes.
Studies on the Root Rot of Ginseng(VII)
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 20~30
Relationship of soil properties and seasonal variation on microbilogical population to-continuous culture and first-time culture of ginseng was investigated by bimonthly from May 1976 to January 1977. pH and P contents of 2 years continuous culture of soil were higher than other culture plot of soil, and contraty to the above, 2 years first-time culture of ginseng soil was conplot of soil, and contraty to the above, 2 years first-time culture of ginseng soil was contained more potassium contents than other culture plot of soil. In microbiological fluctuation with seasonr in various soil conditions, the population, trends of Fusarium spp., Erwiniaspp., and flourescent Psedudomonas spp. were increased in May and July in general, but decreased in the other month. It was observed that in all type of soil, Fusarium spp. was distributed in abundance in and on rihizosphere, and decreased the propagules numbers as soil depth increase. The numbers of Erwinia spp. and fluorescent Pseudo-monas spp. were distributed greater in numbers on the surface zone of soil depth decreasing the numbers along the soil layer increase, and also in 2years continuous culture of soil especially, a great numbers of Erwinia spp. and fluorescent Pseudomonas were evenly distributed in surface zone and rhizosphere. Ginseng disease with a high incidence of bacterial disease in continuous culture of 2 and 4 years was seemed to be associated with soil bacteria that was high in numbers of Erwinia spp. and fluorescent Pseudomonas spp. in May and July.
A study on amylase activities of aspergillus from korea
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 31~41
Dextrinogenic and glucoamylase activities of Aspergillus isolated from various habitat-substrates collected through South Korea are measured, and their amylase activities are surveyed in taxonomical and ecological viewpoints. 1. A. flavous group and A.wentii group exhibited higher activities for both amylases than others. 2. In the relations between amylase activity of Asperguillus and their habitat-sub-strates, the strains isolated from meju and cereals exhibited predominant dextrinogenic amylase activity. 3. Dextrinogenic amylase activity of Aspergillus is higher in the strains isolated from southern coast than the other regions. 4. Among the 601 strains of Aspergillus surveryed, strain No.74 and strain No.421 exhibited the most predominant activity for dextrinogenic amylase and glucoamylase, respectively.
Isolation of Ectroparasitic Bdellovibrio sp. from Several Soils
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 42~45
Bdellovibrio sp. is an ectoparasitic bacteria which is predatory and parasitic upon other bacteria. This study was carried out the isolation of Bdellovibrio sp. from several soil smaples and observation of this organisms by means of electron microscope. The results are as follows ; The primary isolated Bdellovibrio sp. from soil is an obligate intracellular rod form parasite and possess a monoflagella.
Present State and Prospect of Starch Sugar
The Korean Journal of Microbiology, volume 15, issue 1, 1977, Pages 46~59
To screen biologically active components of the higher fungi of Korea, the carpophores of Auricularia polytricha, a well-known edible mushroom, were extracted with 0.14M NaCl solution. The extractive was successively fractionated by adding ammonium sulfate in various amounts, the respective precipitates being weparated by centrifugation, dialyzed and freeze-dried. When a dose of 60mg/kg of each was, i.p., injected into ICR mice, the fraction shich was precopitated at 20% (NH
showed the highest toxicity, killing seven mice within two days. The fraction obtained at 40% (NH
showed the second highest toxicity. The two fractions were named auratoxin I and II after the genus name. The symptoms of the intoxication were convulsion during the first 30 minutes after the injection, then sleeping within an hour, and tremor, lacrimation, nasal and ophthalmic bleeding, congestion and death in 24 hours. Particularly the spleen of the mice was fonud to be enlarged remarkably. The chemical analysis of the toxins showed that auratoxin I consisted of 4.4% protein and 84.5% polysaccharide and that auratoxin II 35.8% protein and 48.0% polysaccharide.