• Mycobiology
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• 제31권2호
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• pp.81-85
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• 2003

Antifungal properties of methyl 2-benzimidazole carbamate(BMC) were investigated using 16 fungi. Cytotoxicity test of BMC revealed that the morphology of HeLa cells was considerably deformed even at the concentrations as low as 0.1 ppm. Minimum inhibitory concentration(MIC) values of BMC for 7 fungi among the 16 tested ones were lower than $1.95{\times}10^{-4}{\mu}g/ml$, while Aspergillus flavus showed an MIC value higher than 1.0 ${\mu}g/ml$. Tolerance induction against BMC was successful only for Paecilomyces farinosus LAR10, contrary to the expectation that tolerance would be induced for the fungi having high MIC values such as Aspergillus niger ATCC 9642 and A. flavus ATCC 9643. Spore germination of A. niger ATCC 9642 was suppressed by BMC. However the mycelial growth of the fungus once germinated was not retarded at all by BMC up to 8 MIC. Addition of lanosterol provided a remedy for the reduced germination rate of A. niger ATCC 9642 spores.

• 한국자원식물학회지
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• 제9권2호
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• pp.97-104
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• 1996

많은 고등균류를 1995년 4월부터 10월까지 모악산 도립공원, 만덕산(전라 북도)과 변산반도 국립공원에서 채칩하여 동정하였다. 그 결과 속껍질버섯 속(Hyphoderma), 탈모껍질버섯속(Piloderma), 날원통담자버섯속(Cylidrobasidium)은 한국 미기록 속이었고, 결절벌집버섯(Polyporus tuberaster), 붉은 진흙버섯(Phellinus ferruginosus), 누에고약버섯(Corticium bomycinum), 붉은가는주름버섯(Phlebia rufa), 털속껍질버섯(Hyphoderma puberum), 삼베탈모껍질버섯(Piloderma byssinum), 날원통담자 버섯(Cylindrobasidium evolens) 그리고 솔휜구멍버섯(Peniophora pini)은 한국산 미기록 종으로 확인되었다.

• The Plant Pathology Journal
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• 제23권2호
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• pp.113-115
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• 2007

A kind of naphthoquinone, plumbagin was purified and identified from the leaves of Nepenthes $ventricosa\;{\times}\;maxima$ through solvent extraction, silica gel column chromatography, and recrystallization. The yield (0.51%) was higher than that of the root of Plumbago scandens (0.26%), P. capensis (0.15%), and N. thorelii (0.092%). It exhibited antifungal activity against all plant pathogenic fungi tested, Alternaria alternata, Aspergillus niger, Bipolaris oryzae, Fusarium oxysporum, Phytophthora capsici, Rhizoctonia solani, Rhizopus stolonifer var. stolonifer and Sclerotinia sclerotiorum. The minimum inhibitory concentration values ranged from about 4.8 to $56.6\;{\mu}g/ml$ against the above eight fungi and R. solani was the most sensitive.

• Archives of Pharmacal Research
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• 제1권1호
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• pp.33-40
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• 1978

From the carpophores of Coriolus sanguineus Fr., a bright-red wood-rotting fungus, which were collected at Suwon, an antibiotic component was isolated as red crystal and identified as cinnabarin by UV and IR spectra. The antibiotic activities against five bacteria and three fungi were determined. It showed considerably high activity against Bacillus subtilis ATCC 6633 and Bacillus maceraus and also against all the three fungi tested. And from this fungus a sterol was isolated and identified as erogosterol by cochromatographing with four authentic sterols.

• Journal of Plant Biology
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• 제10권1_2호
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• pp.21-30
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• 1967

The aim of present study is to elucidate the relationship between decay rate of soil organic matter, and the change of soil microbial population under the oak and pine forest soils in Kwang-nung plantation stand. The results obtained are as follows: 1) The correlation coefficient between decay rate and the soil bacteria is 0.84 and fungi 0.93. 2) The distribution of soil microbial population is higher in both F horizon of the oak forest soil, and F and H horizon of the pine forest soil. However, the number of soil microorganisms decreases with the depth in each forest soil. 3) The population of soil microbes is related to moisture content, total nitrogen, available phosphorus, and exchangeable calcium, except organic carbon in fungi. 4) The soil organic matter has been mainly decomposed by fungi, and the size of its population are governed by the factors such as moisture content, organic carbon, total nitrogen, available phosphorus, and exchangeable calcium.

• 한국균학회지
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• 제5권2호
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• pp.17-20
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• 1977

1974년(年)부터 1976년(年)까지 소백산(小白山), 안동(安東), 의성(義城)(고운사(孤雲寺))에서 채집(採集)한 고등균류(高等菌類)를 동정(同定)한 결과(結果), 한국미기록종(韓國未基錄種)은 다음과 같다. Lypophyllum fallax (Peck.) $K{\ddot{u}}hn$, et Romagn. 황토색만가닥버섯, Armillariella tabescens (Scop. ex Fr.) Sing. 미류나무버섯, Crepidotus subphaerosporus (Lange) $K{\ddot{u}}hn$. et Romagn. 주걱귀버섯, Crepidotus radians (Desm.) Fr. 노랑먹물버섯, Stereum hiugense Imaz. 털깍지버벗, Hygrophorus suzukaensis Hongo 주홍갓버섯, Xylaria carpophila(Pers.) Fr. 젓가락버섯.

• Journal of Microbiology
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• 제45권6호
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• pp.485-491
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• 2007

The effects of biological pretreatment on the Japanese red pine Pinus densiflora, was evaluated after exposure to three white rot fungi Ceriporia lacerata, Stereum hirsutum, and Polyporus brumalis. Change in chemical composition, structural modification, and their susceptibility to enzymatic saccharification in the degraded wood were analyzed. Of the three white rot fungi tested, S. hirsutum selectively degraded the lignin of this sortwood rather than the holocellulose component. After eight weeks of pretreatment with S. hirsutum, total weight loss was 10.7%, while lignin loss was the highest at 14.52% among the tested samples. However, holocellulose loss was lower at 7.81 % compared to those of C. lacerata and P. brumalis. Extracelluar enzymes from S. hirsutum showed higher activity of ligninase and lower activity of cellulase than those from other white rot fungi. Thus, total weight loss and changes in chemical composition of the Japanese red pine was well correlated with the enzyme activities related with lignin- and cellulose degradation in these fungi. Based on the data obtained from analysis of physical characterization of degraded wood by X-ray Diffractometry (XRD) and pore size distribution, S. hirsutum was considered as an effective potential fungus for biological pretreatment. In particular, the increase of available pore size of over 120 nm in pretreated wood powder with S. hirsutum made enzymes accessible for further enzymatic saccharification. When Japanese red pine chips treated with S. hirsutum were enzymatically saccharified using commercial enzymes (Cellulclast 1.5 L and Novozyme 188), sugar yield was greatly increased (21.01 %) compared to non-pre treated control samples, indicating that white rot fungus S. hirsutum provides an effective process in increasing sugar yield from woody biomass.

• 한국산업보건학회지
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• 제18권1호
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• pp.11-19
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• 2008

Mean levels of airborne bacteria, airborne fungi, temperature, relative humidity and carbon dioxide in total 69 general offices were $426({\pm}83)\;cfu/m^3$, $234({\pm}125)\;cfu/m^3$, $25.9({\pm}1.3)\;^{\circ}C$, $57.7({\pm}8.6)\;%$, $422({\pm}38)\;ppm$, respectively. The I/O ratio of airborne bacteria and fungi was over 1 and there was no significant difference among temperature, relative humidity and carbon dioxide in total 69 general offices. In construction period, a concentration of airborne bacteria and fungi was significantly highest in general offices constructed under one year and over three years since construction, respectively (p<0.05). The concentration of airborne fungi in general offices located at basement was significantly higher than those located at ground (p<0.05). No significant difference of airborne bacteria and fungi in general offices was found regardless of installation of HVAC system (p>0.05). The dominant bacterial genera identified in general offices was Staphylococcus, followed by Micrococcus, Bacillus, and Corynebacterium while usarium, Penicillium, Aspergillus, Alternaria, Rhizopus and Mucor were identified as dominant fungal genera in general offices.

• Journal of the Korean Wood Science and Technology
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• 제23권4호
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• pp.108-116
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• 1995

Guaiacol을 첨가한 potato-dextrose agar배지와 참나무 목분 배지를 이용하여 배지의 발색 정도를 정량함으로써 리그닌 분해와 리그닌 분해효소 생산을 위한 우수 균주분리를 시도하였다. 배지의 발색정도와 리그닌 분해율과는 정의 상관을 나타내어 미지균의 리그닌 분해력 추정을 가능하게 하였으며, 버섯의 자실체와 부후재로 부터 분리한 리그닌분해균 중에서 리그닌 분해력과 laccase활성이 우수한 LKY-12, LKY-7과 Coriolus versicolor-13 균주를 선발하였다. 이들 균주의 리그닌 분해율은 30~35% 범위이고, glucose-peptone broth에서 리그닌 분해효소 활성이 다른 균주에 비하여 매우 높아서 우수균주의 특성을 나타냈으며, 생물학적인 펄프화 및 표백 그리고 리그닌분해효소 생산에 이용 가능한 균주로 생각되었다.

• 한국산업보건학회지
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• 제16권2호
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• pp.101-109
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• 2006

The objective of this study is to provide fundamental data for pertinent management of indoor air quality through investigating the size-based characteristics of bioaerosol distributed in the general hospital. Measurement sites are main lobby, ICU, ward and laboratory and total five times were sampled with six-stage cascade impactor. Based on the result of this study, concentrations of airborne bacteria and fungi were the highest in main lobby as followed by an order of ward, ICU and laboratory. Concentrations of airborne bacteria was generally higher than those of airborne fungi and the ratio of indoor and outdoor concentration of both exceeded 1.0 in all the measurement sites of the general hospital. The predominant genera of airborne bacteria identified in the general hospital were Staphylococcus spp.(50%), Micrococcus spp.(15-20%), Corynebacterium spp.(5-20%), and Bacillus spp.(5-15%). On the other hand, the predominant genera of airborne fungi identified in the general hospital were Cladosporium spp.(30%), Penicillium spp.(20-25%), Aspergillus spp.(15-20%), and Alternaria spp.(10-20%). In regard to size distribution of bioaerosol, the detection rate was generally highest on 5 stage($1.1-2.1{\mu}m$) for airborne bacteria and on 1 stage(>$7.0{\mu}m$) for airborne fungi. Cleanliness of facilities in the general hospital and condition of HVAC system should be monitored regularly to prevent indoor air contamination by airborne microorganisms.