• 한국균학회지
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• 제28권2호
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• pp.93-96
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• 2000

완효성비료원을 혼합처리해서 배양시 0.1%와 0.5% 첨가구의 경우 잡균오염율은 나타나지 않았고 무처리에 비해서 배양일수가 약간 빨라졌고 초발이 소요일수는 $2{\sim}3$일 정도 빨라졌으며 수량성에 있어서는 수량이 모두 증가하였으나$(10{\sim}28%)$, 첨가량이 증가할수록 수량성과 생체효율성은 감소하는 경향을 보였다. 완효성비료 첨가배지의 화학성분은 첨가량이 많아질수록 총질소, 암모니아태 및 질산태 질소, 칼리, 인산등은 증가하였다. 완효성비료처리배지에서 생산된 버섯자실체의 이화학적 특성은 암모니아태 질소와 질산태 질소의 경우 무처리구 보다 낮은 경향이었으며 다른 무기성분들은 무첨가와 비슷한 경향을 보였다.

• 국제지역연구
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• 제22권3호
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• pp.85-119
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• 2018

주요 상대국들과 무역에서 환율과 노동숙련도의 구성이 베트남의 무역수지에 미치는 역할 본 연구는 베트남이 주요 20개국과 무역을 할 때 환율과 노동숙련도의 구성이 무역수지에 미치는 영향을 조사하였다. 2000년부터 2016년까지의 균형패널자료 (balanced panel data)를 활용해서, 저자는 베트남의 총 무역수지와 노동기술의 정교화로 인한 무역수지를 분석하였다. 본 연구의 주요 세가지 결론은 아래와 같다: 첫째, 환율은 베트남의 무역수지에 긍정적인 영향을 미치지만 그 계수 (coefficient) 가 작아 그 효과는 제한적이라는 것을 알 수 있었다. 둘째 베트남 화폐 (VND(Vietnamese Dong))의 가치가 떨어질 경우 베트남의 고숙련노동상품과 중숙련사무직 노동생산품의 무역수지는 악화된다. 셋째, 고숙련상품과 중숙련 사무직 생산 상품의 노동 기술 숙련도를 높이고 비가격경쟁력을 향상시킴으로서 베트남의 총 무역수지를 개선할 수 있으며, 반면에 저숙련노동 및 중숙련 블루칼라 노동생산 상품은 더 이상 베트남의 총 무역수지개선에 도움이 되지 않을 것이다.

• Journal of Microbiology and Biotechnology
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• 제27권12호
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• pp.2112-2118
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• 2017

Leuconostoc mesenteroides is used as a starter to produce high-quality kimchi products. In this study, an efficient and economical cabbage juice medium (CJM) was developed by process optimization of cabbage extraction and pasteurization and by compositional supplementation of various lacking nutrients. The pasteurized cabbage juice was determined to be a good medium candidate to cultivate L. mesenteroides, showing maximal cell numbers ($9.85{\times}10^8CFU/ml$) after 24 h. Addition of sucrose and yeast extract with soy peptone resulted in increment of bacterial cell counts in CJM, showing the supplementing effect of the lacking nutrients. Furthermore, addition of shell powder gave a protective effect on bacterial cells by preventing pH decline and organic acid accumulation in CJM, resulting in a 2-fold increase of bacterial counts. The optimized composition of CJM was 70% cabbage juice diluted with water, 0.5% (w/v) sucrose, 1% (w/v) yeast extract, 1% (w/v) soy peptone, and 1.5% (w/v) ark shell powder. The CJM developed in this study was able to yield a comparable level of bacterial counts with MRS medium and reduced the cost by almost 10-fold.

• 한국버섯학회지
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• 제19권3호
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• pp.126-133
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• 2021

In this study, we investigated the effect of solid culture medium on the production of cordycepin in Cordyceps militaris. The regression equation was expressed as follows: Y₁ = 755.3-58.6625X₁+4.79432E-14X₂-46.6625X₃-5.66269E-14X₁X₂-0.025X₁X₃+1.62475E-14X₂X₃-160.6625X₁²+0.0125X₂²-206.9625X₃², where, Y represents the value of cordycepin content (㎍/g), X₁ corresponds to the weight of M. alternatus in solid culture medium (g/bottle), X₂ to the water content of the solid culture medium (%), and X₃ to the culture period (day). The solid culture medium was optimized using the response surface methodology, and the optimal medium composition was as follows: the weight of M. alternatus in solid culture medium and water content were 16.2% and 100.7% (20.14 mL water/20 g solid culture medium), respectively, with a culture period of 39 days. Under these conditions, the cordycepin content of the fruiting bodies reached 150.0 ㎍/g (actual value). The supplementation of M. alternatus in solid culture for improved cordycepin content of C. militaris seems to be a promising alternative to wild and solid cultivation.

• 한국미생물·생명공학회지
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• 제49권3호
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• pp.337-345
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• 2021

Lipase (triacylglycerol lipase, EC 3.1.1.3) is an enzyme capable of hydrolyzing triacylglycerol, to produce fatty acids and glycerol and reverse the reaction of triacylglycerol synthesis from fatty acids and glycerol through transesterification. Applications of lipase are quite widespread in the industrial sector, including in the detergent, paper, dairy, and food industries, as well as for biodiesel synthesis. Lipases by yeasts have attracted industrial attention because of their fast production times and high stability. In a previous study, a lipase-producing yeast isolate was identified as Zygosaccharomyces mellis SG1.2 and had a productivity of 24.56 U/mg of biomass. This productivity value has the potential to be a new source of lipase, besides Yarrowia lypolitica which has been known as a lipase producer with a productivity of 0.758 U/mg. Lipase production by Z. mellis SG1.2 needs to be increased by optimizing the production medium. The aims of this study were to determine the significant component of the medium for lipase production and methods to increase lipase production using the optimum medium. The two methods used for the statistical optimization of production medium were Taguchi and RSM (Response Surface Methodology). The data obtained were analyzed using Minitab 18 and SPSS 23 software. The most significant factors which affected lipase productivity were olive oil and peptones. The optimum medium composition consisted of 1.02% olive oil, 2.19% peptone, 0.05% MgSO₄·7H₂O, 0.05% KCl, and 0.2% K₂HPO₄. The optimum medium was able to increase the lipase productivity of Z. mellis SG1.2 to 1.8-fold times the productivity before optimization.

• 한국실내디자인학회논문집
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• 제19권5호
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• pp.156-164
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• 2010

This study examines for the making a deduction of architectural characteristics of high-rise business hotel's lower public space through analyzing the lobby space composition through Beijjng's 21 cases constructed from 1978 until 2008 in China. In the methods of analyzing process, We study the literatures, research reports and architectural drawings including the site survey. We hope to establish the principle in public space composition of Beijing's business hotels through analyzing the plan of these hotels. Finally, We find out the principles after researching as follows. Firstly, duration of business hotel construction was concentrated with the center of Beijing City especially central 5 Gu which will roll. To 1990's after that the high-rise hotel construction increased in order for the demand of the resort and the convention hotel to come to be many. The modem style was increased in hotel design of building's style. Secondly, the result which analyzes an 21 case study shows concourse style of public space composition is representative in lobby space of general 5 star business hotel in Beijing. And there are many upper composition style in sectional plan, modern style in lobby interior design. The third, the medium and small sized hotel have the plane which apply the public space efficiently.

• Journal of Ecology and Environment
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• 제46권1호
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• pp.8-17
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• 2022

Background: Parthenium hysterophorus L. (Asteraceae; hereafter Parthenium) is an invasive alien species of global significance because of its' negative ecological and socioeconomic impacts. This species is spreading rapidly from lowland Tarai to Middle Mountain regions in Nepal. In the present study, we analyzed the impacts of Parthenium on plant community composition including their soil seedbank in subtropical grasslands located in central Nepal. Data was collected in a 10 m long transects passing through areas of high (> 90% cover), medium (40%-60%) and low (< 10%) levels of Parthenium cover using a plot of 1 m². Altogether, we sampled 90 plots in 30 transects. Seedling emergence method was used to estimate soil seedbank density in the soil samples (0-10 cm depth) collected from the plots with high Parthenium cover. Results: There was no significant difference in the plant species richness at different levels of Parthenium invasion whereas there was a significant change in the species composition of above ground flora due to Parthenium invasion. There was also a significant difference in species composition between soil seedbank and aboveground flora in the highly invaded plots. Parthenium was the most dominant in soil seedbank, contributing 65% to the total soil seedbank. Conclusions: Our study suggests that Parthenium has considerable negative impact on the native grassland flora, and the dominance of Parthenium in the soil seedbank means there is a challenge for its management. It also suggests the need of monitoring the soil seedbank dynamics while managing Parthenium weed.

• 한국식품영양과학회지
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• 제11권4호
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• pp.1-6
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• 1982

식생활(食生活)에 많이 이용(利用)되고 있는 자건(煮乾)멸치국물에 대한 조리시간(調理時間)의 조건(條件)을 밝힐 목적(目的)으로 멸치국물을 우러내는데 많이 사용되고 있는 자건(煮乾)멸치중 대멸과 중멸을 원료(原料)로 하여 조리시간(調理時間)에 따른 국물중의 유리(遊離)아미노산(酸), 그리고 칼슘과 철에 대한 용출량(溶出量)을 실험(實驗)하였다. 대멸과 중멸 원료(原料)의 유리(遊離)아미노산(酸)의 함량차이(含量差異)는 다소 있었으나 함량(含量)이 높은 순(順)은 histidine, alanine, lysine, leucine, glycine, glutamic acid이며 전유리(全遊離)아미노산(酸)의 $67.1%{\sim}76.6%$를 차지하였다. 조리시간별(調理時間別) 유리(遊離)아미노산(酸)의 용출량(溶出量)은 10분간(分間)보다 30분간(分間)의 용출량(溶出量)이 많았고 많이 용출(溶出)되는 유리(遊離)아미노산(酸)은 histidine, alanine, lysine, leucine, glycine 및 glutamic acid로써 이들 유리(遊離)아미노산(酸)이 국물의 풍미(風味)에 중요(重要)한 구실을 할 것이라고 보아진다. 칼슘과 철은 대멸과 중멸간에 함량차이(含量差異)는 거의 없으며 조리시간별(調理時間別) 용출량(溶出量)은 10분간(分間)이 가장 낮았으며, 30분간(分間)과 40분간(分間)에는 차이(差異)가 거의 없으므로 이들 조리시간(調理時間)은 30분간(分間)이 가장 좋았다.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2001년도 봄 학술발표논문집
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• pp.45-50
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• 2001

Stem firmness and flowering response of cut lily as influenced by medium composition (Control: Upland soil, Pt: Peatmoss, Pe: Perlite, Ve: Vermiculite, Rrh: Rotted rice-hull, RPt: Russian Peatmoss) were studied. For 'Casa Blanca', plant height and length of flower stalk increased when bulbs were planted in Pt:Rrh:Ve(1:1:1, v/v), and dried leaves of lower part plants decreased by RPt:Pe:Rrh(1:1:1, v/v). In case of 'Marco Polo' plant height and length of flower stalk increased with Pt:Rrh(1:1, v/v) as compared to other treatment, number of leaves and dried leaves increased when bulbs were planted in RPt:Pe:Rrh(1:1:1, v/v) as compared to control. Flowering of 'Casa Blanca' was promoted in Pt:Pe:Ve(1:1:1, v/v) and 'Marco Polo' was accelerated in Pt:Rrh:Ve(1:1:1, v/v). Flower length of 'Casa Blanca' was increased by RPt:Pe:Rrh(1 :1 :1, v/v) as compared with control and 'Marco Polo' was increased when bulbs planted to Pt:Rrh(1 :1, v/v). Flower-bud blasting of two cultivars was increased with Pt as compared with other treatment. Stem firmness of 'Casa Blanca' was increased by Pt:Pe:Ve (1:1 :1, v/v), and especially, stem firmness of upper part plants was increased by Pt:Rrh(1 :1, v/v) in 'Marco Polo' as compared to control plants. but generally, stem firmness of 'Casa Blanca' was not influenced with all cultural media as compared to control.

• 한국수산과학회지
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• 제52권4호
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• pp.328-333
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• 2019

The proximate composition and mineral contents of 18 subtropical fish species caught off the coast of Jeju Island, Korea were determined. The mean moisture content was highest (78.0%) in the eight species of lean fish, lowest (72.6%) in the four species of medium-fat fish, and intermediate (75.4%) in the six species of low-fat fish. The lipid content was in the order of medium-fat fish > low-fat fish > lean fish. The protein content ranged from 17.7% to 18.9%. The mean macro-mineral contents in the 18 species were 290.2 mg/100 g edible portion K, 146.6 mg P, 113.5 mg Na, 67.2 mg Ca and 38.3 mg Mg. The mean value of micro-mineral contents were 2.1 mg Fe, 1.7 mg Cu and 1.5 mg Zn. These results suggest that subtropical fish from Jeju Island are good sources of protein, lipid and minerals.