• Title/Summary/Keyword: high-producer

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A Newly Isolated Rhizopus microsporus var. chinensis Capable of Secreting Amyloytic Enzymes with Raw-Starch-Digesting Activity

  • Li, Yu-Na;Shi, Gui-Yang;Wang, Wu;Wang, Zheng-Xiang
    • Journal of Microbiology and Biotechnology
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    • v.20 no.2
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    • pp.383-390
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    • 2010
  • A newly isolated active producer of raw-starch-digesting amyloytic enzymes, Rhizopus microsporus var. chinensis CICIM-CU F0088, was screened and identified by morphological characteristics and molecular phylogenetic analyses. This fungus was isolated from the soil of Chinese glue pudding mill, and produced high levels of amylolytic activity under solid-state fermentation with supplementation of starch and wheat bran. Results of thin-layer chromatography showed there are two kinds of amyloytic enzymes formed by this strain, including one $\alpha$-amylase and two glucoamylases. It was found in the electron microscope experiments that the two glucoamylases can digest raw corn starch and have an optimal temperature of $70^{\circ}C$. These results signified that amyloytic enzymes secreted by strain Rhizopus microsporus var. chinensis CICIM-CU F0088 were types of thermostable amyloytic enzymes and able to digest raw corn starch.

Product Development Process for Ethical Fashion Design - Fair trade system approach - (윤리적 패션디자인을 위한 상품개발 프로세스 - 공정무역 시스템 관점에서 -)

  • Jang, Namkyung
    • Journal of the Korean Society of Costume
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    • v.63 no.1
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    • pp.16-26
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    • 2013
  • This study seeks solutions for two conflict values from the fair trade, one being fulfilling environment and social responsibility and the other being suggesting stylish designs within a reasonable price range. The purposes of this study were to establish fair-trade fashion product development process by investigating practices in fashion product development process within fair-trade company, and to identify the characteristics of fair-trade fashion product development. Qualitative research method was employed. Participant observation and in-depth interviews were conducted with practitioners working in fairtradekorea, Ltd. and producers in Bangladesh, from which case studies were compiled. The results were as follows: The case study provided evidence that fair-trade fashion product development has the same steps as practiced in general fashion brands, but has different characteristics such as fair-trade products going through a much slower process which led to early planning, having producer-centered product development, concentrating on spring/summer products, having a high cost structure, and having unpredictable quality control. Study implications and future research avenues are also discussed.

Isolation and Characterization of Soil Microorganism Producing Acyl CoA Synthetase Inhibitor (Acyl CoA 합성효소 억제제를 생산하는 토양균의 분리 및 특성 연구)

  • Kim, Kyoung-Ja;Kim, Tae-Sung
    • YAKHAK HOEJI
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    • v.40 no.6
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    • pp.713-719
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    • 1996
  • Identification of soil microorganism strain B-6. a producer of acyl CoA synthetase inhibitor, based on its morphological, physiological, biochemical and chemotaxonomical charact eristics was performed. The strain B-6 was identified as Bacillus subtilis. Ihe acyl CoA synthetase inhibitor produced by this strain was highly achieved in fermentation medium that contained glucose 1.0%, soluble starch 1.0%, NH$_4$Cl 0.3%, oatmeal 1.0%, pharmamedia 1.0%, basic magnesium carbonate 0.5%. pH 7.5 at 30$^{\circ}$C for 7 days. The optimal pH and temperature for growth were 9.0 and 30$^{\circ}$C, respectively. Butanol extract of culture filterate of strain B-6 in acyl CoA synthetase inhibitor production medium containing corn steep liquor exhibited high acyl CoA synthetase inhibitor activity and antimicrobial activity against C. albicans. But chloroform extract of culture filterate of strain B-6 in medium containing NH$_4$Cl, ($NH_4)_2SO_4$ or urea instead of corn steep liquor exhibited higher antimicrobial activity against C. albicans than that of butanol extract.

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Stress-induced secondary carotenogenesis in Coelastrella rubescens (Scenedesmaceae, Chlorophyta), a producer of value-added keto-carotenoids

  • Minyuk, Galina;Chelebieva, Elina;Chubchikova, Irina;Dantsyuk, Natalia;Drobetskaya, Irina;Sakhon, Evgenii;Chekanov, Konstantin;Solovchenko, Alexei
    • ALGAE
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    • v.32 no.3
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    • pp.245-259
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    • 2017
  • We report on the culture growth and stress-induced secondary carotenogenesis in a biotechnologically promising but largely unexplored chlorophyte Coelastrella rubescens strain Vinatzer/Innsbruck V 195. Changes in the cell morphometry, biomass accumulation, its carotenoid and fatty acid profiles were followed in the cultures supplemented with either inorganic ($CO_2$) or organic (sodium acetate) carbon on the background of low-pH stress. Collectively, the results of the study characterize C. rubescens as a biotechnologically promising, potentially double-purpose organism. It produces several secondary keto-carotenoids with a considerable proportion of astaxanthin and canthaxanthin. At the same time, the cell lipid fatty acid profile of this microalga is suitable for obtaining a high-quality biodiesel complying with the strictest EN14214 European standard.

LC-MS/MS Profiling-Based Secondary Metabolite Screening of Myxococcus xanthus

  • Kim, Ji-Young;Choi, Jung-Nam;Kim, Pil;Sok, Dai-Eun;Nam, Soo-Wan;Lee, Choong-Hwan
    • Journal of Microbiology and Biotechnology
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    • v.19 no.1
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    • pp.51-54
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    • 2009
  • Myxobacteria, Gram-negative soil bacteria, are a well-known producer of bioactive secondary metabolites. Therefore, this study presents a methodological approach for the high-throughput screening of secondary metabolites from 4 wild-type Myxococcus xanthus strains. First, electrospray ionization mass spectrometry (ESI-MS) was performed using extracellular crude extracts. As a result, 22 metabolite peaks were detected, and the metabolite profiling was then conducted using the m/z value, retention time, and MS/MS fragmentation pattern analyses. Among the peaks, one unknown compound peak was identified as analogous to the myxalamid A, B, and C series. An analysis of the tandem mass spectrometric fragmentation patterns and HR-MS identified myxalamid K as a new compound derived from M. xanthus. In conclusion, LC-MS/MS-based chemical screening of diverse secondary metabolites would appear to be an effective approach for discovering unknown microbial secondary metabolites.

A Study on Character Fashion - The Focus on Animation Character - (캐릭터 패션에 관(關)한 연구(硏究) - 애니메이션 캐릭터를 중심(中心)으로 -)

  • Lee, Jung-Im;Chun, Hae-Jung
    • Journal of Fashion Business
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    • v.5 no.1
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    • pp.97-116
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    • 2001
  • Character fashion was already turned up in Egyptian age and nowadays was worn to everybody as regardless of ages, level and sex of people. This paper reviewed character fashion and animation character based on USA and Japan that is outstanding more coming up today and compared and analyzed with our country's situation. Usually, character fashion would give imagnation of products and companies themselves for aesthetic sense and can show possessive feeling and personality. And that mean fashion used by character like pictures and signals(that include words figures and special signals) and these fashion using by animation character was come out in 1929. In spite of third producer, Korea, back from USA and Japan about character fashion, we faced many problems. In order to solve these problems, we must make our own pure character that do not need to pay royalty and must spread marketing strategy with character fashion of more various designs. Therefore we should concentrate for raising high quality works and avoid uneconomic investment and plagiarism and finally we must expand recognition concerning character fashion.

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Marketing Strategies and Consumption Situations of Environment-Friendly Agricultural Products in the Metropolitan Area (수도권 소비자의 친환경농산물 소비실태 분석과 소비확대 전략)

  • Heo, Seung-Wook;Kim, Ho
    • Korean Journal of Organic Agriculture
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    • v.11 no.4
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    • pp.15-37
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    • 2003
  • Recently, production-consumption quantity and market size of environment-friendly agricultural products(EFAP) have been increased. Consumers have demanded food safety and nutrition of EFAP, but in the near future they will need many kinds of item, relatively low price and high quality. So producers have to make an effort for down-cost, increasing items and developing technical know-how, which can be attained by producer/region organization. Correlation coefficient between the recognition degree for certification system and purchasing amounts at a time is higher than other ones. Therefore public information works using the TV and newspaper must be promoted all the more about certification system. And if the consumer’s satisfaction level of EFAP purchased gets higher, the quantity demanded will be increased more. And consumer’s trust on EFAP is derived from certification system or close relation between producers and consumers. Thus the most important thing of marketing strategies for EFAP is continuously to focus on explanation and information works on certification system by region in metropolitan area. Also, it necessary to introduce green marketing principles and apply to strategies item type. Namely those need to establish target market segmentation And marketing strategy stages according to the green degrees of market And commodity.

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Structures and functions of microbial extracellular or wall polysaccharides in the physiology of producer organisms (미생물 다당류의 구조와 세포생리학적 기능)

  • 박용일
    • The Microorganisms and Industry
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    • v.26 no.1
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    • pp.18-30
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    • 2000
  • Three kinds of organic matter such as glucose, oxalic acid, and ethanol were added to the media(N-free or NO$\_$3/-riched) and their effects on the nitrogen fixation of Nostoc pruniforme were measured by manometric technique through the experiments in vivo. 1) The organic matters used in this experiments showed effective results as a role of substrate for the fixation of atmospheric nitrogen. 2) In the nitrogen-free medium treated with the both of flucose nad ethanol, the highest nitrogen uptakes were detected in the treated of low concentrations (glucose ; 0.1%, 0.5%, ethanol : 0.1%, 0.5%). On the contrary, the highest nitrogen uptakes in NO$\_$3/-riched medium were measured at the treated of high concentrations (glucose ; 2%, 1%, ethanol ; 1.5%, 1.0%). 3) The highest nitrogen uptakes in N-free medium treated with oxalic acid were measured at the concentration of 2% and 1%, respectively. In the medium of NO$\_$3/-riched, the nitrogen uptakes were in the opposite directions.

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Rapid detection of beer-spoilage lactic acid bacteria: Modified hop-gradient agar with ethanol method

  • Hong, Lim Seok;Kim, Ji Hyeon;Kim, Wang June
    • Korean Journal of Food Science and Technology
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    • v.52 no.3
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    • pp.296-303
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    • 2020
  • Hop-resistant lactic acid bacteria (LAB) are well-known, major beer-spoilage bacteria. The hop-gradient agar containing ethanol (c-HGA+E) method has been used to examine hop-resistance of beer-spoilage LAB. However, the selection of beer-spoilage bacteria by the c-HGA+E method is either too selective or too inclusive. Furthermore, it is accompanied by a complicated experimental procedure, high-cost and time. To overcome these disadvantages, the modified hop-gradient agar with ethanol (m-HGA+E) method was developed. The most remarkable modifications were the shape of the petri dish and the inoculation method for bacteria. The efficiency and validation of the m-HGA+E approach were proven by the formation of colonies at different hop concentrations in the bottom layer, co-culture with the bacteriocin producer and by PCR detection of hop-resistant genes. This study demonstrated that m-HGA+E is a rapid, economical, and easy method to monitor potential hop-resistant beer-spoilage LAB during the beer brewing process.

Purification and the Stoichiometry of Nucleoside Oxidase from Flavobacterium meningosepticum (Flavobacterium meningosepticum이 생산하는 Nucleoside Oxidase의 정제 및 Stoichiometry)

  • 최양문;조홍연;양한철
    • Microbiology and Biotechnology Letters
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    • v.21 no.1
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    • pp.23-29
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    • 1993
  • A bacterial strain. producing a nucleoside oxidase was isolated from soil and identified as Flavobacterium meningosepticum by its taxonomical characteristics. The enzyme has been purified ISO-fold to electrophoretic homogeniety in an overall yield of 18% from the cell free extract of the producer. The enzyme catalyzed oxidation of only nucleosides related to both purine and pyrimidine with very high substrate specificity. The nucleoside oxidase was proved to be a noble enzyme by stoichiometry that 1 mol adenosine as a substrate was especially oxidized via adenosine 5' -aldehyde to 1 mol adenosine 5' -carboxylic acid with the formation of 2 mol $H_20_2$

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