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류재산 외 한국버섯학회 2005 한국버섯학회지 Vol.3 No.3
CO₂는 버섯의 발이를 촉진하고 갓의 생성을 억제해서, 담자포자를 가지는 주름(gill)의 발달을 억제하여 버섯의 품질을 결정하는데 영향을 미친다. 본 실험에서는 큰느타리버섯의 생육에 가장 적합한 CO₂농도를 구명하려고 1,600, 2,400, 3,200ppm 이하의 농도에서 버섯생육 실험하였다. 방임처리구에서 수확율은 방임조건 1,600, 2,400, 3,200ppm에서 각각 98.6, 99.3, 93.8%로 2,400ppm이 가장 우수하였고, 병당 무게에서도 2,400ppm이 가장 우수한 102.5g이 수확되었다. 품질은 2,400ppm이 6.1, 1,600ppm에서 5.5로 111% 우수하였다. 솎음처리구에서 품질은 1,600, 2,400, 3,200ppm에서 9.4, 9.5, 8.0로 2,400ppm이 가장 높았다. 병당 수확량은 1,600, 2,400, 3,200ppm에서 각각 90.7, 98.2, 77.3g 이어서 방임처리구와 마찬가지로 2,400ppm에서 많은 수확량을 보였다. 이러한 결과를 놓고 볼 때 방임과 솎음처리구의 최적 CO₂농도는 2,400ppm으로 사료된다. Carbon dioxide(CO₂) promotes development of primordia and depress differentiation of sporophore and gill containing basidia, have an effect on quality. This experiments were conducted to elucidate optimal level of CO₂ for king oyster mushroom(Pleurotus eryngii). King oyster mushroom was cultivated under 1,600, 2,400, and 3,200ppm CO₂. Harvest ratio in normal plot were 98.6, 99.3, and 93.8% at 1,600, 2,400, 3,200ppm, respectively, so 2,400ppm is optimal. The yield per bottle was 102.5g at 2,400ppm, better than 99.7g at 1,600ppm, The CO₂ concentration of 2,400ppm was also the best condition for quality, 6.1 at 2,400ppm was 115% of 1,600ppm's. In thinning treatment plot, quality at 2,400ppm was 9.5 better than 1,600ppm whose quality was 9.4. The yields per bottle were 90.7, 98.2, 77.3g at 1,600, 2,400, 3,200ppm respectively. These results show that 2,400ppm was optimal CO₂ concentration for quantity of King Oyster mushroom as well as quality.
류재산 외 한국버섯학회 2006 한국버섯학회지 Vol.4 No.4
In order to make the objective quality standard of Pleurotus eryngii, we statistically analysed fruit body collected by the type of market with our own mushroom research lab's quality standard and suggested the quality standard of Pleurotus eryngii by grade. Namely, premium(extra large), first(large), second(middle), and third grade(small) fruit body were 120∼130, 110∼120 below, 80∼110below, and 80mm and below, respectively in height. The diameters of stipe of each grades were 40∼45, 30∼40below, 25∼30below, 25mm below, respectively. The standard of the diameter of pileus indicated ratio of the diameter of pileus/the diameter of stipe instead of the diameter of pileus only because a quality is depend on a ratio of pileus/stipe. The premium and first grade of a ratio of pileus/stipe were 1.6 below and 1.7and below respectively. The weights of premium(extra large), first(large), second(middle), and third grade(small) fruit body were 95 ∼120, 70∼95below, 50∼70below, 50g below, respectively 큰느타리버섯의 객관적인 품질기준을 마련하기 위하여 유통형태별로 자실체를 수집하여 통계적으로 본 연구실의 기준과 비교분석하고, 등급별 품질기준을 제시하였다. 즉, 키의 경우 특품(특대)120∼130, 상품(대)110∼120미만, 중품(중)80∼110미만, 하품(소)80mm 미만으로 두었고, 대두께는 품질별로 특품(특대)40∼45, 상품(대)30∼40미만, 중품(중)25∼30미만, 하품(소) 25mm미만으로 정하였다. 갓직경은 절대적인 수치보다 대두께와의 비례에 의해 품질이 정해지므로 구체적인 수치를 없애는 대신 비율을 적시하였다. 특품(특대)은 갓직경/대두께의 비율이 1.6이하, 상품(대)은 1.7이하로 두었다. 무게는 특품(특대)이 95∼120, 상품(대)70∼95미만, 중품(중)50∼70미만, 하품(소)50g미만으로 설정하였다.
Ryu, Jae San,Lee, Sang Dae,Lee, Young Han,Lee, Seong Tae,Kim, Dong Kil,Cho, Soo Jeong,Park, Sang Ryeol,Bae, Dong Won,Park, Ki Hun,Yun, Han Dae 한국미생물 · 생명공학회 2000 Journal of microbiology and biotechnology Vol.10 No.4
A pathogenic fungus causing balloon flower root rot (Platvcodon grandiflorum) was isolated from naturally infected roots. The microbial characteristics of the isolated microorganism were similar to those of Rhizoctonia solani. About 500 bacterial species from field soils were screened for a biological agent against the above-mentioned putative pathogen, and several bacteria with the antifungal activity were isolated. Among them, the isolated JS2 was identified as Pseudomonas aeruginosa. This strain showed a broad spectrum of antifungal activity potentially. When the antifungal substance was purified from a broth culture of JS2, it was identified as 2,4-diacetylphloroglucinol (Ph1).
( Ryu Jae San ),( Min Keun Kim ),( Hyeon Su Ro ),( Young Min Kang ),( Jin Hyeuk Kwon ),( Won Sik Kong ),( Hyun Sook Lee ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.9
In order to estimate how diverse the mating types in Pleurotus eryngii from different regions are, pairings between monokaryons derived from inter- and intragroups were done. Sixteen and 15 alleles were identified at loci A and B from the 12 strains. In the P. eryngii KNR2312, widely used for commercial production, four mating loci, A3, A4, B3, and B4, were determined. Those loci, except A3, were found in 4 strains out of 12 strains. To improve breeding efficiency, especially in mating type determination, RAPD and BSA were performed to screen for a mating type specific marker. The SCAR marker 13-22100 was developed based on the RAPD-derived sequence typing B3 locus. The sequence analysis of 13-22100 revealed that it contained a conserved domain, the STE3 superfamily, and consensus sequences like the TATA box and GC box. It seems likely that the SCAR marker region is a part of the pheromone receptor gene.
유재광(Jae-Kwang Ryu),민준호(Jun-Ho Min),김효산(Hyo-San Kim),이달재(Dal-Jae Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Recently the number of passengers using urban railway has been increased by reasons of the reductions of car use due to high fuel prices and the enlightenment about the environment. Above all the noise and the vibration coming from the friction between the wheel and the rail of trains in operation which is not only a factor that hinders riding comforts but causes civil complaints. Furthermore the noise has become social issues from tightening the relevant regulations by the government since January 2010. Although ballasted tracks were constructed on urban railways at the time of opening they have been changed into slab tracks because slab tracks require much less maintenance. However in view of sound absorptivity of track slab tracks have 10 times less capability than ballasted tracks(ballasted track : 0.5~0.6 / slab tracks : 0.06) results more noise than that of ballasted tracks as much as 3dB(A) since slab tracks emit more reflection noise. Therefore in order to minimize reflection noise on slab tracks noise abatement system has been developed as a national R&D program to apply on-site test. It is assumed that the construction technology developed in this study can be used not only as basic data for the on-site test for the noise reduction in urban railway but as an efficient construction method.