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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Microbiology and Biotechnology Letters
Journal Basic Information
Journal DOI :
The Korean Society for Applied Microbiology and Biotechnology
Editor in Chief :
Volume & Issues
Volume 7, Issue 4 - Dec 1979
Volume 7, Issue 3 - Sep 1979
Volume 7, Issue 2 - Jun 1979
Volume 7, Issue 1 - Mar 1979
Selecting the target year
Microbiological Characteristics of Heavy Metal Ion-Tolerant Microorganisms.
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 183~190
Cadmium ion-tolerant microorganisms were isolated from the sludge and soil of a cadmium ion-polluted area, a zinc mineralized area, in Kyung Sang Pook Do, Korea. A strain, C-7, which showed tile highest tolerance to cadmium ion was selected by screening from 18 cadmium tolerant microorganisms. By the taxonomical characteristics of this strain, it was identified as a variant of Erwinia sp.. The strain grew in a medium cadmium ion up to a concentration of 2, 800
/ml and the maximum intercellular accumulation of Cd
was measured to be 28.60 mg/g dried cells (57.2％) during incubation in medium containing 50
/ml under aerobic condition at 28
for 24 hour.r.
Studies on the Utilization of Waste Ginseng Meal -Effect of Waste Ginseng Meal on Alcohol Fermentation and Yeast Reproduction-
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 191~195
This study was conducted to investigate the effect of saccharified extract of ginseng meal on alcohol fermentation and reproduction of yeast. Different concentrations of saccharified extract of ginseng meal in liquid medium were tested, and the experimental results obtained were summarized as follows : 1. In the process of alcohol fermentation of yeast,
output was much accelerated by the higher concentration of saccharied extracts from 1％ to 6％, but
output was disurbed at the concentrations of 10％ and 15％. .2. In the process of alcohol fermentation of yeast, the production of alcohol was increased by the higher concentration of saccharified extracts from 1％ to 6％, but decreased at the concentrations of 10％ and 15％. 3. Number of reproduced yeast cell after aerobic culture of Sacc. cervisiae was increased by the higher concentration of saccharified extracts from 1％ to 10％, but decreased at the concentration of 15％. The number of yeast cell at the concentratin of 10％ extract was 1.6 times more than that of control.
Studies on Microbial Reduction of Chicken Carcasses
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 197~204
Chlorine alone was not effective in reducing the numbers of microorganisms on the chicken carcasses. The chlorine in addition to succinic acid, in which the carcasses were immersed for 30 minutes succeeded in reducing the numbers of microorganisms on the chicken skin. Chicken drumsticks treated with 200 ppm NaOCl plus 0.5％ succinic acid stored at 5
showed a little reduction in microbial quantity for approximately 2 days, but the microbial load increased thereafter to the point of indicating organoleptic spoilage in approximately 7 days. This method extended the shelf life of chicken by 2 days.
Studies on the Growth and Acid Production of Lactic Acid Bacteria in Soy Milk
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 205~209
Lactobacillus acidophilus exhibited more growth and produced greater amounts of acid in the soy milk than Streptococcus thermophilus, Lactobacillus bulgaricus, and Lactobacillu helveticus examined. The supplementation of the soy milk with glucose accelerated the growth of L. acidophilus, and enhanced acid production by L. acidophilus whereas sucrose addition was without effect. The supplementation of the soy milk containing five percent glucose with a methionine accelerated the growth of L. acidophilus, and enhannced acid production by L. acidophilus. L. acidophilus showed greater population in the soy milk containing five percent glucose which was treated with 0.0008％ protease (9.40
/m/) than the soy milk containing five percent glucose (2.02
/ml) moreover L. acidophilus produced greater amounts of acid in the soy milk containing five percent glucose which was treated with 0.0008％ protease (1.47 ％) than in the soy milk containing five percent glucose (0.56％)
Continuous Cultivation in Air-lift Fermentor for Production of Single Cell Protein
Choe, T.B. ; Ryu, D.Y. ;
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 211~216
Air lift fermentor (ALF) is widely used for production of single-cell protein (SCP) from hydrocarbon and other carbon sources, because oxygen transfer efficiency is believed to be superior in the ALF to that in other conventional fermentors. However, the performance of ALF in terms of mixing is somewhat questionable. In this research, we studied about the performance of the ALF in SCP production using methanol fermentation process as a model system. The results show that ALF could be employed for SCP production or other fermentation processes when substrate is miscible and used at low concentration. With a high substrate concentration, it must be operated under high pressure or low dilution rate to meet the adequate oxygen transfer requirement.
Microbiological Studies on the Rice Makkulli (Part 1) Utilization of Rice Makkulli Koji with the Isolated Strain M-80
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 217~223
Six strains of mold which had high saccharifying and acid-productive ability were isolated from wild sources. The strain M-80 among them and Aspergillus kawachii, which was generally used as rice makkulli koji were used for this studies. The results obtained were summarized as follows. 1)
-amylase activities of the strain M-80 and Asp, kawachii showed similarly as about 140W. V., while
-amylase activity of M-80 was 54 A. U. and Asp. kawachii was 40 A. U. 2) Acid protease activity of M-80 was higher then Asp. kawachii but alkaline protease activity was lower Asp. kawachii respectively. 3) The contents of total acid, ethanol and fusel oil in makkulli brewing with M-80 were higher those of Asp. kawachii and methanol contents of the tested two strains were about 33mg/％. 4) Fifteen kinds of free amino acid were detected from makkulli brewing of two strains, and free amino acid contents of M-80 were 10％ higher than those of Asp. kawachii.
Korean Environmental Policy and Prospects
Microbiology and Biotechnology Letters, volume 7, issue 4, 1979, Pages 225~230