Stain improvement in the white button mushroom ‘Seolgang’ and its varietal characteristics in Agaricus bisporus

Byung-Joo Lee,Mi-Ae Lee,Yong-Gyun Kim,Kwang-Won Lee,Yong-Pyo Lim,Byung-Eui Lee,Ho-Yeon Song 한국버섯학회 2012 한국버섯학회지 Vol.10 No.4

The button mushroom (Agaricus bisporus) is one of the most widely cultivated important edible mushroom species. In the breeding of new button mushroom, ‘Seolgang’ was developed by crossing two monokaryons ‘CM020913-27’ and ‘SSU423-31’. Because of the secondarily homothallism, only a small percentage of the basidia produce 3 or 4 spores, which are mostly haploid (n) and do not fruit. Single spore cultures derived from these types of spores produce a vegetative mycelium that also contain a variable number of genetically identical nuclei per cell called monokaryon. The lack of clamp connections between monokaryon and dikaryon required a series of mycelial culture and fruiting test. After crossing, hybrids were cultivated on a small scale and on a commercial scale at a farm. For this, the spawn was made by a commercial spawn producer and the spawned compost by a commercial compost producer. Mycelial growth of ‘Seolgang’ on CDA was better at 20℃ and 25℃ when it was compared with that of ‘505 Ho’. The mature cap shape of new strain ‘Seolgang’ is oblate spheroid and the immature cap shape is round to oblate spheroid. The cap diameter was 41.2 mm on average. In comparison with white strain ‘505 Ho’, the strain had a yield that was 9% higher. It produced fruiting bodies which had a higher weight on average per fruiting body and were 19% firmer with a good shelf life. Days of fruiting body were 3-4 days later than those of ‘505 Ho’. The physical characteristics such as elasticity, chewiness, adhesiveness were better than that of ‘505 Ho’. Genetic analysis of the new strain ‘Seolgang’ showed different profiles compared to ‘505 Ho’, CM02913-27, SSU413-31, when RAPD primers A02 and O04 were used.

임상검체에서 분리된 Acinetobacter의 항균제 내성(1991-1997)

송호연,조성란,김휘준,고광균 대한화학요법학회 1998 대한화학요법학회지 Vol.16 No.2

목적 : 최근 원내감염의 중요 원인균으로 대두되고 있는 A. baumannii의 발생 양상 및 병동 별 항균제 내성의 변화 추이를 조사하여 치료시 적절한 항균제를 선택하는데 도움이 되는 자료를 제공하고자 하였다. 방법 : 1991년 1월부터 1997년 12월까지 7년간 한 대학병원의 입원환자로부터 분리 동정된 Acinetobacter의 균종별, 계절별, 임상검체별 분리양상을 조사하고 디스코 확산법에 의한 항균제 내성의 변화 추이 및 중환자실과 일반 병실에서의 항균제 내성 차이를 분석하였다. 결과 : 분리 동정된 Acinetobacter 4,128균주 중 91.5%가 A. baumannii로 연도에 따라 발생율이 증가하는 양상을 보였고 여름철이 호흡기계 검체로부터 가장 많이 분리되었다. A. baumannii로 imipenem과 ciprofloxacin을 제외한 대부분의 항균제에 높은 내성을 나타내었고 많은 항균제에서 내성율이 연도에 따라 점차 증가하였다. 3,777균주의 A. baumannii 중 45.2%가 중환자실 및 신생아실에서 분리되었는데 이는 중환자실 입원 환자수가 일반병동보다 훨씬 적은 것을 고려할 때 매우 높은 발병율임을 알 수 있었다. 또한 중환자실에서 분리된 균주의 다제내성율은 일반병동에서 분리된 균주보다 훨씬 높았다. 결론 : 중환자실에는 일반병동에 비해 다제내성율이 훨씬 높아 감염에 대한 저항력이 저하된 중증환자들의 생명을 끊임없이 위협하고 있는데 이런 다제내성균의 출현 및 원내감염을 줄이기 우한 중환자실만의 집중적인 대책이 수립되어야 할 것으로 사료된다. Background : Acinetobacter baumannii is recognized as an important causative agent of nosocomial infection. Therefore, it is important to understand the changing patterns of antimicrobial resistance to guide for antimicrobial therapy of infection by A. baumannii. So we compared the rate of miltidrug-resistance between ICU and general wards and we analyzed the trends of antimicrobial resistan changes during the past seven years. Methods : Acinetobacter isolated from 1991 to 1997 at a tertiary hospital were classified according to species, wards, seasons and clinical specimens. We tested the antimicrobial resistance by the standard disk diffusion method and compared the multidrug-resistant patterns of A. baumannii isolated from ICU with those from general wards. Results : Among the 4,128 Acinetobacter isolates, A. baymannii was the most common species(91.5%), followed by A. Iwoff??(8.5%), Acinetobacter species were isolated mainly from respiratory specimens during the summer. A. baumannii showed high resistance rates to most of antibiotics except imipenem and ciprofloxacin and resistance rates were increasing year after year. Forty-five percent of A. baumannii was isolated from ICU and neonate room, it showed higher multidrug-resistance rate than those generated from general wards. Conclusion : Multidrug-resistant. A. baumannii was predominant in ICU than general wards. It will contribute to increase of mortality due to nosocomial infection in severly ill patients. In order to reduce occuranc of multidrug-resistant isolates and noscomial infection in ICU, it is necessary to organize the intensive surveillance system in ICU.

인도네시아 연구기관의 인적자원관리 시스템 개발을 위한 목표모형

송계충,조영호,이광순 충남대학교 경상대학부설 경영경제연구소 1996 경영논집 Vol.12 No.2

연구소 직무등급시스템의 개발과 활용 (JFSL 모형) : 인도네시아 과학기술평가청 사례

송계충,조영호,이광순 충남대학교 경상대학부설 경영경제연구소 1996 경영논집 Vol.12 No.2

차량용 산소발생기의 성능 측정

송근호,유진호,김정은,장화익,이광래 江原大學校 産業技術硏究所 2005 産業技術硏究 Vol.25 No.A

Auto exhausts and air pollution can become trapped in the cabin of vehicle, reducing the amount of oxygen available for breathing. Driver may feel sleepy, headaches, nausea, confusion, dizziness and lower levels of oxygen can damage the driver's general health. Consequently, oxygen generator purified oxygen into the car to help driver get the oxygen driver's body needs. In this study, in order to evaluate the oxygen generator performance, the samples that the various conditions(humidity(50%, 100%), flow and oxygen concentration) were examined. There were three types of oxygen generator; sample 1(2.5ℓ/min, 36%0₂), sample 2(4.5ℓ/min, 41%0₂) and sample 3(5ℓ/min, 39%0₂). As the humidity increased from 50% to 100%, the oxygen concentration of the sample 1(36%), 2(41%) and 3(39%) was reduced 31%0₂, 38%0₂ and 38%0₂, respectively. Also, the each sample measured that effect of human in car on oxygen concentration, if the oxygen concentration is one person in car, each sample of oxygen concentration was 20.8%0₂, 23.7%0₂ and 21.2%0₂. From the above results, it was shown that oxygen generator for car, if the oxygen concentration is increased, effect of humidity is reduced, and that in the sample of supplying a high-rate of oxygen, the oxygen concentration is increased. It was suggested that effect of humidity on oxygen generator for car can be reduced according to the supply of oxygen.

결핵균 TB-14 유전자의 클로닝

송호연,고광균 순천향대학교 교수학습개발센터 2004 Journal of Soonchunhyang Medical Science Vol.10 No.3

The purpose of this study is to find a Mycobacterium tuberculosis specific protein for a new diagnositic method of tuberculosis. We found a protein reacting with Kris antiserum(goat antiserum against Mycobacterium intracellulare) in culture filtrate of Mycobacterium avium LR114F by Western blot. The N-terminal amino acid sequence of this if compared with that of Mycobacterium tuberculosis using TIGR Database. It is cloned, expressed in E. coli. Recombinant TB-14 protein of M. tuberculosis is composed of 148 amino acid including 30 amino acid of signal peptide and it showed 78% of homology with M. avium. These results suggest that recombinant TB-14 protein may be useful for the devolpment of new diagnostic method for tuberculosis.

흰쥐에서 음경발기 평가의 척도로서 음경해면체내압측정술 확립

송윤섭,김용준,이광우,김준모,문기혁,박영호,민영기,유형균,김형건 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Purpose: Because studies about the control of penile erection at the entral nervous system was dependent on the animal experiments, establishment of measuring penile erection is important to evaluate the effects changes at the central nervous system on the penile erection. Intracavernous pressure measurement in rats has been introduced as a suitable index for the evaluation of penile erection but this method is invasive and technically difficult. So, we established the intracavernous pressure measurement in rats as the experimental index for penile erection. Materials and Methods: 42 male adult Sprague-Dawley rats (250-300gm) were divided to saline or papaverine treated group. Rats were placed on a heating table to maintain their body temparature and anesthetized with 50mg/kg of pentobarbital sodium by intraperitoneal injection. A cannula was inserted to the left carotid artery to measure systemic blood pressure. Saline (0.05, 0.1ml), papaverine(0.05, 0.1, 0.25, 0.5, 1.0, 2.0mg) were injected intracavernously via 26 guage needle filled with saline or papaverine which connected to pressure transducer and polygraph was inserted into the corpus cavernosum on one side to inject the drug and to measure intracavernous presure. Results: Properly executed insertion and intracavernous administration produced a instantaneous but transient rise in intracavernous pressure that substantially stabilized and maintained at 5.4±0.4mmHg. Intracavernous pressure and duration of penile blood flow following intracavernous injection of papaverine are increased comared to those of saline. Conclusions: Monitoring intracavernous pressure in rats represents a suitable index for the evaluation of penile erection in small laboratory animals.

Vibrio cholerae균 분리를 위한 새로운 분별배지

송호연,고광균 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.1

The purpose of this experiment is to develop a new differential medium for Vibrio cholera. The TCBS agar medium is used commonly for the identification of vibrio species, but it contains some inhibitors against other bacteria to increase the selectivity for vibrio species. So we developed the BYS agar medium as a new differential medium for V. cholera. We compared the colony forming unit(CFU) between BYS and TCBS using streak culture method and micro-pour plate method(100 ㎕). The CFU count was more than thirty times higher in BYS agar medium than in TCBS in both methods. These results suggest that BYS agar medium is a differential medium better than TCBS agar medium for the identification of V. cholera.

연속 다공질 생체세라믹에 대한 생체친화성 연구

송호연,고광균 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.1

Continuously Al_(2)O_(3) porous bodies were fabricated by multi-extrusion process. Their biocompatibility was evaluated through in vitro and in-vivo study. Behavior of osteoblast adhesion and proliferation grown on Al_(2)O_(3) porous body was observed. Human osteoblast-like MG-63 cells were grown well on top, bottom, and outside as well as inside surface of porous body. Al_(2)O_(3) the ideal pore size was 150-200 um. The 3- dimensional continuously porous Al_(2)O_(3) body was implanted in subcutaneous tissue of rat for in-vivo study. The porous body was covered with well-developed fibrous tissues and showed the formation of new capillaries in it. No inflammatory response around porous body was found. From the results, the bio-ceramic materials used in the research was proved to have excellent biocompatibility.

桔梗湯과 加味桔梗湯의 抗癌效果와 免疫反應에 關한 硏究

宋孝貞,金聖勳,李光浩 대한동의병리학회 1996 동의생리병리학회지 Vol.10 No.1

肺癰에 使用되고 있는 桔梗湯을, 肺癌株 및 S-180에 投與하여 抗癌 抗轉移 및 免疫效果를 實驗的으로 糾明하고, 여기에 現在 肺癌에 多用되고 있는 2가지 藥物을 加味하여 相乘效果를 觀察하고자 하였다. C57BL/6에 B16-Fo를 皮下主射하고 ICR생쥐에 S-180을 腹腔 注射한 後 桔梗湯과 加味桔梗湯을 投與하여 腫瘍重量과 體重變化, 生命延長率, 組織變化 및 血液學的變化 등을 測定하여 抗癌效果를 分析하고, 아울러 FACS에 의해 BALB/c의 脾臟免疫細胞에 대한 影響을 살펴보았다. 桔梗湯, 桔梗湯加腥草 및 桔梗湯加白花蛇舌草등은 모두 抗癌, 抗轉移 및 免疫反應에서 有意性있는 結果를 認定되었으며, 魚腥草나 白花蛇舌草를 加味하였을 경우 더욱 效果的으로 나타났다. In order to prove the antitumor effect of Kilkyungtang(KKT), Kilkyungtang with Houttuyniae Herba(KKT-I) and Kilkyungtang with Oldenlandiae diffusae Herba(KKT-Ⅱ) experimentally, the studies were done. We measured tumor mass and body weight hematological change in ICR bearing S-180 and C57BL/6 implanted with B16-Fo, also studied their effect on immune cells in BALB/c by FACS. The results were obtained as follows: 1. Body and tumor weight were significantly suppressed in all groups as compared with control group. MST(mean survival time) was 11% in KKT, 16.9% in KKT-Ⅰ, 16.1% in KKT-Ⅱ for 14 days after implantation s.c. with B16-Fo and also body weight was significantly suppressed after implantation i.p. with S-180, MST was 20.1% in KKT, 40.9% in KKT-1, 56.6% KKT-Ⅱ for 62 days. 2. WBC and platelet aggregation was significantly increased in all groups, the number of platelet was significantly increased in KKT and KKT-Ⅰ as compared with control group. 3. The infiltration of tumor cell was obvious in the white and red pulps, in the sinusoid of liver and the glomeluli of kidneys after implantation with S-180, whereas the changes of tissues were not significant in KKT-Ⅱ, KKT-Ⅰ and KKT in order. 4. T cell and T helper cell were increased in KKT-Ⅰ and KKT-Ⅱ treated groups and B cell was increased in KKT treated group as compared with control group. From above results it was concluded that Kilkyungtang(KKT), kilkyungtang with Houttuyniae Herba(KKT-Ⅰ) and Kilkyungtang with Oldenlandiae diffusae Herba(KKT- Ⅱ) had antitumor effect, and also Kilkyungtang combined with Houttuyniae Herba or Odenlandiae diffusae Herba were more effective than KKT only which suggests the necessity of continuous study on the effects of Houttuyniae Herba or Oldenlandiae diffusae Herba.