• Food Science of Animal Resources
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• v.20 no.1
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• pp.72-78
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• 2000

This study was conducted to investigate the storage period and quality characteristics. The L- and b-value of hamburger patty added significantly during storage, but the color of hamburger bread was not changed. The springiness, cohesiveness, gumminess and chewiness of hamburger patty added significantly during storage. The cohesiveness of hamburger bread was added but the chewiness decreased significantly during storage. The pH of hamburger showed 5.66∼5.69 during storage. The TBA of hamburger patty added from 0.19 to 0.36 malonaldehyde mg/kg, and the VBN added from 3.58 to 7.83mg% during storage. The viable bacteria to 8 days storage was 5.1${\times}$105 CFU/g. The coliform group, Staphylococcus aureus, Salmonella and Vibrio parahaemolyticus was not detected during storage. The taste, aroma, color and texture was not changed, and was not appearance of mold and slime during storage.

• Mycobiology
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• v.42 no.3
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• pp.279-281
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• 2014

Severe bark decay disease was observed on oak logs at a shiitake cultivation farm in Geochang-gun, Gyeongnam province. The symptoms observed were fruiting bodies that had developed on the top and side surface of oak logs. As a result, the bark came off easily exposing the sapwood. Slime mold specimens collected from oak logs showed developing fruiting bodies comprising of stalks, hypothallus, capillitium, and columella, and the causal agent of bark decay disease was identified as Stemonitis splendens on the basis of morphological characteristics. To our knowledge, this is the first report of Stemonitis splendens causing bark decay of oak logs used for shiitake mushroom cultivation in Korea.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1994.04a
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• pp.82-87
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• 1994

Signal transduction through G protein-coupled receptors comprises three functional components, a receptor, a G protcin and a effector protein. Work over the last sevcral ycars has led to the characterization or virtually all of the components or these systems. what has come out or those studies is that these mechanisms of signal transduction are pervasive in nature being found in mammalian and avian species, as well as lower organisms such as yeast and slime mold. It is known that G protein-coupled receptors mediate the action of such diverse molecules such as small hormones and neurotransmitters, small peptide molecules as well as glycoprotein hormones and various sensory perceptions such as light, olfaction and most likely taste.

• Asian Journal of Turfgrass Science
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• v.10 no.2
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• pp.117-124
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• 1996

One new cellular slime mold, Dicivostelium valenstemmun sp. n. Shim et Chang, is isolated from the fermentation layer of soils in the cool temperate forests of Surak mountain, Korea. This species has the sori and sorophore yellow-pigmented, and sparse or irregular branches. And it is characterized by tall and robust sorocarps, well-form basal disks, mucoroides-type aggregations and large spores. This species has sorophores gradually tapering from bases to tips, simple capi- tate sorophore tips and conical bases. When prostrates on the plates, it has sparsely clavate bases. Spores are considerably large, 6.8~9.9 x 3.4~5.1 $\mu$m(avg. 8.5 x 4.1 $\mu$m), L /W index l.84~2.43(avg. 2.07) without polar granules. Key words: Diccyostelium valeustemmum, Cool temperate forests, Surak mountain.

• Korean Journal of Microbiology
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• v.7 no.3
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• pp.91-106
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• 1969

From a review of the literature it was found that 96 species of fungi have been reported as occurring on the wood of Ulmus americana L., the Amercan elm. In an intensive study of the fungi growing on one American elm log, 60 species were found. Only one had been reported previously on American elm. A second fungus proved to be a hyperparasite of a slime mold. Three members of the Fungi Imperfecti could not be identified and is believed that they may constitute new taxa. In the past, Nasidiomycetes constituted the main group of fungi on American elm wood according to the literature. The Fungi Imperfecti were the largest group in this study in that over half of the species found are imperfect fungi. All of the species encountered in the study were illustrated.

• Proceedings of the Korean Biophysical Society Conference
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• 1999.06a
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• pp.13-13
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• 1999

"Two-component" phosphorelay signal transduction systems constitute a potential target for antibacterial and antifungal agents, since they are found exclusively in prokaryotes and lower eukaryotes (yeast, fungi, slime mold, and plants) but not in mammalian organisms.(omitted)

• Food Science of Animal Resources
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• v.20 no.2
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• pp.139-145
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• 2000

This study was conducted to investigate the storage and quality characteristics of vegetable hot dog. The b-value of sausage was increased significantly, but the color of bread was not changed during storage. The hardness, springiness, cohesiveness and chewiness of sausage were not changed, but the gumminess was increased during storage. The hardness, springiness, cohesiveness and gumminess of bread were not changed, but the chewiness was decreased during storage. The moisture content of sausage was not changed, but that of bread was decreased during storage. The pH of vegetable hot dog showed 5.67~5.71 during storage. The TBA of sausage was increased from 0.13 to 0.29mg/kg, the VBN was increased from 4.24 to 5.46mg% during storage. The total plate counts showed $3.5\times$104 CFU/g 8 days of storage. The coliform group, Staphylococcus aureus. Salmonella and Vibrio parahaemolyticus were not detected during storage. The vegetable hot dog was found to be fresh by sensory scores such as taste, aroma, color, texture and palatability, and the appearance of mold and slime was not detected during storage.

• The Korean Journal of Ecology
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• v.17 no.3
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• pp.299-310
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• 1994

Intraspecific clonal interactions have important influences on a population structure of the cellular slime mold (CSM). This study was to investigate whether or not evolutionary change in a population could be induced by clonal competition, and to elucidate how various clones in a population evolve in a homogeneous environment of laboratory culture. The characteristic clones of Polysphondylium pallidum which had different resource consumption rates (RCR) and mating types I and II were selected for study. Investigation was conducted for 4 experimental time interval $(T_0-T_4)$; one experimental time interval took almost 10-14 days from inoculation to havest of fruiting bodies. Two sets of 50 clones were cultured from 50 clones at To, and RCR variations of the population were compared between $(T_0\;and\;T_4)$ for each set of clones. Each clone of the CSM had a diverse resource consumption rate, or growth rate, in a homogeneous and limited Cerophyl agar plate despite the passage of 48-56 generations from the beginning of the experiment. Diverse clones with different growth rate could coexist in one site of the homogeneous agar plate as well as heterogeneous soil microenvironment. When there was high clonal diversity of RCR, a clone in a population had high chances to encounter other clones with resultant increased clonal competition. In one set, 26 of 37 clones of mating type I were changed to mating type Il for the 4 experimental time intervals, which indicated that the rate of competitive exclusion among clones during total experiment from $(T_0\;to\;T_4)$ was 0.703. In another set, 31 of 37 clones of mating type I were changed to mating type II , having the rate of competitive exclusion 0.838. The frequency of each of mat~ng types changed by 0.93-1.29% in each successive generation. The competitive exclusion among clones occurred by 1.26-1.75% when approximately $2.6{\times}10^8$ bacterial cells were provided as food and thereafter one generation of myxamoebae of CSM elapsed at room temperature. This finding implicated that in the vegetative state of P, pallidurn there was 1.26-1.75% probabil~ty of evolutionary change per generation changing from one clone to another clone.