Antibacterial activity of sophoraflavanone G isolated from the roots of Sophora flavescens.

abstract：:The infection of pandemic influenza viruses such as swine flu (H1N1) and avian flu viruses to the host cells is related to the following two factors: First, the surface protein such as HA (hemagglutinin) and NA (neuraminidase) of the influenza virus. Second, the specific structure of the oligosaccharide [sialic acid(a...

journal_title：Journal of microbiology and biotechnology

authors： Yoo ES

更新日期：2011-05-01 00:00:00

abstract：:A beta-1,3-1,4-glucanase from the fungus Laetiporus sulphureus var. miniatus was purified as a single 26 kDa band by ammonium sulfate precipitation, HiTrap Q HP, and UNO Q ion-exchange chromatography, with a specific activity of 29 U/mg. The molecular mass of the native enzyme was 52 kDa as a dimer by gel filtration. ...

journal_title：Journal of microbiology and biotechnology

authors： Hong MR,Kim YS,Joo AR,Lee JK,Kim YS,Oh DK

更新日期：2009-08-01 00:00:00

abstract：:Abnormal melanin synthesis results in several hyperpigmentary disorders such as freckles, melanoderma, age spots, and other related conditions. In this study, we investigated the antimelanogenic effects of an extract from the microalgae Chlamydomonas reinhardtii (CE) and potential mechanisms responsible for its inhibi...

journal_title：Journal of microbiology and biotechnology

authors： Lee A,Kim JY,Heo J,Cho DH,Kim HS,An IS,An S,Bae S

更新日期：2018-12-28 00:00:00

abstract：:Two new glucosides (1 and 2) of geldanamycin (GA) analogs were obtained from in vitro glycosylation by UDP-glycosyltransferase (YjiC). Based on spectroscopic (HR-ESI-MS, 1D, and 2D-NMR) analyses, the glucosides were elucidated as 4,5-dihydro-7-O-descarbamoyl-7- hydroxyl GA-7-O-β-D-glucoside (1) and ACDL3172-18-O-β-D-g...

journal_title：Journal of microbiology and biotechnology

authors： Huo Q,Li HM,Lee JK,Li J,Ma T,Zhang X,Dai Y,Hong YS,Wu CZ

更新日期：2016-01-01 00:00:00

abstract：:Accumulating evidence indicates that lactic acid bacteria could improve host physiology and lipid metabolism. To investigate the effect of the gut microbiota on host lipid metabolism, a hyperlipidemic rat model was established by feeding rats a high-fat diet for 28 days, and the gut microbiota of the rats was analyzed...

journal_title：Journal of microbiology and biotechnology

authors： Chen D,Yang Z,Chen X,Huang Y,Yin B,Guo F,Zhao H,Huang J,Wu Y,Gu R

更新日期：2015-05-01 00:00:00

abstract：:The xynA gene encoding the xylanase A of Paenibacillus sp. DG-22 was isolated with a DNA probe obtained by PCR amplification, using degenerated primers deduced from the amino acid residues of the known N-terminal region of the purified enzyme and the conserved region in the family 11 xylanases. The positive clones wer...

journal_title：Journal of microbiology and biotechnology

authors： Lee TH,Lim PO,Lee YE

更新日期：2007-01-01 00:00:00

abstract：:This study aimed to characterize CTX-M producers of urinary E. coli and K. pneumoniae isolates and to determine the prevalence of plasmid-mediated antimicrobial resistance genes among them. Minimum inhibitory concentrations (MICs) were determined, and PCR and sequencing were performed. Among the 42 (82.3%) E. coli and...

journal_title：Journal of microbiology and biotechnology

authors： Kim S,Sung JY,Cho HH,Kwon KC,Koo SH

更新日期：2014-06-28 00:00:00

abstract：:The impact of overproduction of a heterologous protein on the metabolic system of host Lactococcus lactis was investigated. The protein expression profiles of L. lactis IL1403 containing two near-identical plasmids that expressed high- and low-level of the green fluorescent protein (GFP) were examined via shotgun prot...

journal_title：Journal of microbiology and biotechnology

authors： Kim M,Jin Y,An HJ,Kim J

更新日期：2017-07-28 00:00:00

abstract：:A novel putative toxin-antitoxin segregational stability system named KyAB system was identified in a novel native plasmid pBMB8240 from Bacillus thuringiensis strain YBT-1520, based on sequences homology with other toxin-antitoxin systems, the lethal activity of the KyB putative toxin in Escherichia coli and the stab...

journal_title：Journal of microbiology and biotechnology

authors： Liu X,Zhu S,Ye W,Ruan L,Yu Z,Zhao C,Sun M

更新日期：2008-10-01 00:00:00

abstract：:Staphylococcus aureus strains are important foodborne pathogens that produce various toxins. To evaluate the risk of the enterotoxins, four S. aureus strains from kinbap and two clinical samples were isolated and identified, and their expression of the enterotoxin genes were analyzed using a reverse transcription real...

journal_title：Journal of microbiology and biotechnology

authors： Lee YD,Moon BY,Park JH,Chang HI,Kim WJ

更新日期：2007-03-01 00:00:00

abstract：:Lactobacillus brevis ATCC 14869 exhibited a carbon catabolite de-repressed (CCR) phenotype which has ability to consume fermentable sugar simultaneously with glucose. To evaluate this unusual phenotype under harsh conditions during fermentation, the effect of lactic acid and hydrogen ion concentrations on L. brevis AT...

journal_title：Journal of microbiology and biotechnology

authors： Jeong KH,Israr B,Shoemaker SP,Mills DA,Kim J

更新日期：2016-07-28 00:00:00

abstract：:An enzymatic reaction system was developed and optimized for bioconversion of resveratrol from glucose. Liquid enzyme extracts were prepared from Alternaria sp. MG1, an endophytic fungus from grape, and used directly or after immobilization with sodium alginate. When the enzyme solution was used, efficient production ...

journal_title：Journal of microbiology and biotechnology

authors： Che J,Shi J,Gao Z,Zhang Y

更新日期：2016-08-28 00:00:00

abstract：:Efficient L-lactic acid production from Jerusalem artichoke tubers by Lactobacillus casei G-02 using simultaneous saccharification and fermentation (SSF) in fed-batch culture is demonstrated. The kinetic analysis in the SSF signified that the inulinase activity was subjected to product inhibition, while the fermentati...

journal_title：Journal of microbiology and biotechnology

authors： Ge XY,Qian H,Zhang WG

更新日期：2010-01-01 00:00:00

abstract：:The synergy effect of trisodium phosphate (TSP) and ethanol against murine norovirus 1 (MNV-1), as a surrogate for human noroviruses, on fresh produces was evaluated. More than 2% (w/v) of TSP effectively inactivated MNV-1. The single treatment of 1% TSP or 30% ethanol for 30 min was not effective on MNV-1; however, c...

journal_title：Journal of microbiology and biotechnology

authors： Kim EJ,Lee YD,Kim KY,Park JH

更新日期：2015-12-28 00:00:00

abstract：:Fermentation with filamentous fungi in a bioreactor is a complex dynamic process that is affected by flow conditions and the evolution of the rheological properties of the medium. These properties are mainly affected by the biomass concentration and the morphology of the fungus. In this work, the rheological propertie...

journal_title：Journal of microbiology and biotechnology

authors： Núñez-Ramírez DM,Medina-Torres L,Valencia-López JJ,Calderas F,López Miranda J,Medrano-Roldán H,Solís-Soto A

更新日期：2012-11-01 00:00:00

abstract：:Many strains of Bacillus cereus cause gastrointestinal diseases, and the closely related insect pathogen Bacillus thuringiensis has also been involved in outbreaks of diarrhea. The diarrheal diseases are attributed to enterotoxins. Sixteen reference strains of B. cereus and nine commercial and 12 reference strains of ...

journal_title：Journal of microbiology and biotechnology

authors： Kim MJ,Han JK,Park JS,Lee JS,Lee SH,Cho JI,Kim KS

更新日期：2015-06-01 00:00:00

abstract：:In this study, three of the representative EDCs, 17beta-estradiol, bisphenol A, and styrene, were employed to find their mode of toxic actions in E. coli. To accomplish this, four different stress response genes, recA, katG, fabA, and grpE genes, were used as a representative for DNA, oxidative, membrane, or protein d...

journal_title：Journal of microbiology and biotechnology

authors： Kim YS,Min J,Hongz HN,Park JH,Park KS,Gu MB

更新日期：2007-08-01 00:00:00

abstract：:An efficient and simple fermentation process was developed for the production of gamma-amminobutyric acid (GABA) by Lactobacillus sakei B2-16. When the L. sakei B2-16 was cultivated in the rice bran extracts medium containing 4% sucrose, 1% yeast extract and 12% monosodium glutamate, the maximum GABA concentration rea...

journal_title：Journal of microbiology and biotechnology

authors： Kook MC,Seo MJ,Cheigh CI,Pyun YR,Cho SC,Park H

更新日期：2010-04-01 00:00:00

abstract：:The fungal cell wall is a major target of antifungals. In this study, we report the antifungal activity of an ethanol extract from Aucklandia lappa against Candida albicans. We found that the extract caused cell wall injury by decreasing chitin synthesis or assembly and (1,3)-β-D-glucan synthesis. A sorbitol protectio...

journal_title：Journal of microbiology and biotechnology

authors： Lee HS,Kim Y

更新日期：2020-07-28 00:00:00

abstract：:A Pseudomonas fluorescens strain was isolated and showed antagonistic activity against phytopathogenic fungi and found to possess a gene responsible for production of antibiotic 2, 4-diacetylphloroglucinol. For the extension of biocontrol range, a gene for an Androctonus australis Hector insect toxin 1 (AaHIT1), one o...

journal_title：Journal of microbiology and biotechnology

authors： Lu W,Zhang W,Bai Y,Fu Y,Chen J,Geng X,Wang Y,Xiao M

更新日期：2010-02-01 00:00:00

abstract：:Small heat shock proteins (sHSPs) function as molecular chaperones that protect cells against environmental stresses. In the present study, the genes of hsp17.6 and hsp17.7, cytosolic class I sHSPs, were cloned from a tropical plant, Ageratina adenophorum. Their C-terminal domains were highly conserved with those of s...

journal_title：Journal of microbiology and biotechnology

authors： Gong W,Yue M,Xie B,Wan F,Guo J

更新日期：2009-12-01 00:00:00

abstract：:Using 200 porcine colon tissues, the efficiencies of three isolation methods of Campylobacter from porcine intestines were compared: Method 1, direct streaking of colon mucosa; Method 2, direct inoculation of intestinal contents with a swab; Method 3, inoculation of pre-enriched medium. A total of 460 Campylobacter is...

journal_title：Journal of microbiology and biotechnology

authors： Shin E,Lee Y

更新日期：2009-07-01 00:00:00

abstract：:In this study, a total of 58 different kinds of nuruk (a traditional Korean fermentation starter) were prepared, including 46 kinds of restored nuruk from ancient documents. Each nuruk was evaluated by analysis of its saccharification power, and the enzyme activities of glucoamylase, α-amylase, β-amylase, protease, an...

journal_title：Journal of microbiology and biotechnology

authors： Lee JE,Lee AR,Kim H,Lee E,Kim TW,Shin WC,Kim JH

更新日期：2017-05-28 00:00:00

abstract：:The effects of algal inoculation on chemical oxygen demand (COD) and total nitrogen (TN) removal, and indigenous bacterial dynamics were investigated in municipal wastewater. Experiments were conducted with municipal wastewater inoculated with either Chlorella vulgaris AG10032, Selenastrum gracile UTEX 325, or Scenede...

journal_title：Journal of microbiology and biotechnology

authors： Lee J,Lee J,Shukla SK,Park J,Lee TK

更新日期：2016-05-28 00:00:00

abstract：:The amylosucrase encoding gene from Deinococcus geothermalis DSM 11300 (DgAS) was codon-optimized and expressed in Escherichia coli. The enzyme was employed for biosynthesis of three different dihydroxybenzene glucosides using sucrose as the source of glucose moiety. The reaction parameters, including temperature, pH,...

journal_title：Journal of microbiology and biotechnology

authors： Lee HS,Kim TS,Parajuli P,Pandey RP,Sohng JK

更新日期：2018-09-28 00:00:00

abstract：:Filamentous fungi colonizing rice straw were collected from 11 different sites in Korea and were identified based on characterization of their morphology and molecular properties. The fungi were divided into 25 species belonging to 16 genera, including 14 ascomycetes, one zygomycete, and one basidiomycete. Fungal cell...

journal_title：Journal of microbiology and biotechnology

authors： Lee S,Jang Y,Lee YM,Lee J,Lee H,Kim GH,Kim JJ

更新日期：2011-12-01 00:00:00

abstract：:Phenol-soluble modulins (PSMs) are responsible for regulating biofilm formation, persister cell formation, pmtR expression, host cell lysis, and anti-bacterial effects. To determine the effect of psm deletion on methicillin-resistant Staphylococcus aureus, we investigated psm deletion mutants including Δpsmα, Δpsmβ, a...

journal_title：Journal of microbiology and biotechnology

authors： Song HS,Bhatia SK,Choi TR,Gurav R,Kim HJ,Lee SM,Park SL,Lee HS,Joo HS,Kim W,Seo SO,Yang YH

更新日期：2021-01-28 00:00:00

abstract：:Outbreaks of staphylococcal food poisoning (SFP) causing serious human diseases and economic losses have been reported globally. Furthermore, the spread of Staphylococcus aureus with increased resistance to multiple antimicrobial agents has become a major concern in the food industries and medicine. Here, we isolated ...

journal_title：Journal of microbiology and biotechnology

authors： Yu JH,Lim JA,Chang HJ,Park JH

更新日期：2019-12-28 00:00:00

abstract：:Areca nut (AN) chewing is a habit in many countries in Central, Southern, and Southeast Asia. It is strongly associated with the occurrence of oral, pharyngeal, and esophageal cancer as well as systemic inflammation. However, the association between AN intake and the development of gastric lesions has not yet been ide...

journal_title：Journal of microbiology and biotechnology

authors： Lee J,Gunawardhana ND,Jang S,Choi YH,Illeperuma RP,Kim A,Su H,Hong YA,Kim JH,Kim J,Jung DW,Cha IH,Bak EJ,Cha JH

更新日期：2016-10-28 00:00:00

abstract：:A denitrifying polyphosphate-accumulating bacterium (YKP-9) was isolated from activated sludge of a 5-stage biological nutrient removal process with step feed system. This organism was a Gram-negative, coccus-shaped, facultative aerobic chemoorganotroph. It had a respiratory type of metabolism with oxygen, nitrate, an...

journal_title：Journal of microbiology and biotechnology

authors： Lee HW,Park YK

更新日期：2008-12-01 00:00:00