Abstract:
:An acoustic cell settler (ACS) using ultrasound at cells of 3 MHz was used to recycle Saccharomyces cerevisiae in a fermenter. The locations of both the inlet and outlet in the acoustic cell settler, which have a relatively long distance between the transducer and reflector, were optimized. A tilted settler was designed to make up for the defect in the horizontal ACS, which has a low recovery ratio. The tilted ACS gave a recovery ratio of yeast cells of about 5 during the most period of operation, which was twice that of the horizontal ACS.
journal_name
Biotechnol Lettjournal_title
Biotechnology lettersauthors
Hwang SH,Koo YMdoi
10.1023/a:1022345508979keywords:
subject
Has Abstractpub_date
2003-02-01 00:00:00pages
345-8issue
4eissn
0141-5492issn
1573-6776journal_volume
25pub_type
杂志文章abstract:OBJECTIVE:The effect of epicatechin-3-gallate (ECG), a polyphenol that is present in green tea, on doxorubicin (DOX) cytotoxicity in H9C2 cardiomyocytes and its underlying mechanisms were investigated. RESULTS:Pretreatment with ECG (20 and 30 μM) significantly increased DOX-induced apoptosis to 16-18% in H9C2 cardiomy...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1879-0
更新日期:2015-10-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-005-2514-2
更新日期:2005-10-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1405-1
更新日期:2014-03-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-012-0857-z
更新日期:2012-05-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-007-9569-1
更新日期:2008-03-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-010-0341-6
更新日期:2010-11-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/a:1022386514487
更新日期:2003-02-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章,评审
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更新日期:2015-08-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1971-5
更新日期:2016-02-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-020-02860-x
更新日期:2020-08-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1802-8
更新日期:2015-07-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章,评审
doi:10.1007/s10529-017-2376-4
更新日期:2017-09-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-012-0967-7
更新日期:2012-10-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-005-3682-9
更新日期:2005-09-01 00:00:00
abstract::Organophosphorus hydrolase (OPH) hydrolyzes organophosphorus esters. We constructed the yeast-displayed OPH using Flo1p anchor system. In this system, the N-terminal region of the protein was fused to Flo1p and the fusion protein was displayed on the cell surface. Hydrolytic reactions with paraoxon were carried out du...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-010-0204-1
更新日期:2010-05-01 00:00:00
abstract:OBJECTIVES:To investigate gene expression profiles of the thermotolerant yeast Saccharomyces cerevisiae strain KKU-VN8, a potential high-ethanol producer, in response to various stresses during high-temperature ethanol fermentation using sweet sorghum juice (SSJ) under optimal conditions. RESULTS:The maximal ethanol c...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-017-2398-y
更新日期:2017-10-01 00:00:00
abstract::Ochrobactrum anthropi cleaved the delta-(D-alpha-aminoadipoyl)-side chain from delta-(D-alpha-aminoadipoyl)-7-amino-4-methylcoumarin, a beta-lactamase-resistant cephalosporin C analogue. In whole cell conversions up to 1 nkat g(-1) dry cell wt were achieved. O. anthropi possesses also gamma-D-glutamyltranspeptidase ac...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-005-3903-2
更新日期:2005-12-01 00:00:00
abstract::By systematic investigation, glutamate and a mixture of metal ions were identified as factors limiting the production of nattokinase in Bacillus subtilis. Consequently, in medium supplemented with these materials, the recombinant strain secreted 4 times more nattokinase (260 mg l(-1)) than when grown in the unsuppleme...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-006-9126-3
更新日期:2006-10-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-016-2196-y
更新日期:2016-12-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/a:1024028603089
更新日期:2003-06-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1766-8
更新日期:2015-05-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1244-0
更新日期:2013-10-01 00:00:00
abstract::Peroxisome proliferator-activated receptors (PPARs) alpha and gamma are key regulators of lipid homeostasis and insulin resistance. In this study we show that a novel compound, 3-{4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl}- 2-[2-(2-nitro-phenoxy)-acetyl amino]-propionic acid (O325H), is an agonist with dual ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-006-9013-y
更新日期:2006-06-01 00:00:00
abstract::Fed-batch cultivation of Azotobacter vinelandii 21was optimized for biosurfactant production. Optimization of feed-rate time profile and concentration of nutrient medium components in feeding solution is based on a hybrid mathematical model consisting of mass-balance equations for biomass, biosurfactant, volume of cul...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/B:BILE.0000035486.81463.b4
更新日期:2004-07-01 00:00:00
abstract::Cell-free extracts of Streptomyces sp. DRS I converted ampicillin to cephalexin, presumably due to the activity of the enzyme, expandase. The extract was fractionated and characterized by colorimetric and chromatographic measurements coupled with disc-agar diffusion bioassay against an ampicillin-resistant, cephalexin...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-009-9973-9
更新日期:2009-07-01 00:00:00
abstract::Blakeslea trispora is used commercially to produce β-carotene. Isopentenyl pyrophosphate isomerase (IPI) and geranylgeranyl pyrophosphate synthase (GGPS) are key enzymes in the biosynthesis of carotenoids. The cDNAs of genes ipi and carG were cloned from the fungus and expressed in Escherichia coli. Greater GGPS activ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-012-1004-6
更新日期:2012-11-01 00:00:00
abstract::A plasmid, pBGFP, carrying green fluorescent protein (gfp) and benomyl-resistance genes was constructed and transformed into Metarhizium anisopliae. The transformants grew normally and GFP fluorescence was detected. No change was found in virulence for the transformants. Fluorescence was detected in hyphae from the ha...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-007-9332-7
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVES:To prepare (R)-phenyl-1,2-ethanediol ((R)-PED) with high enantiomeric excess (ee p) and yield from racemic styrene oxide (rac-SO) at high concentration by bi-enzymatic catalysis. RESULTS:The bi-enzymatic catalysis was designed for enantioconvergent hydrolysis of rac-SO by a pair of novel epoxide hydrolases ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-017-2433-z
更新日期:2017-12-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章,评审
doi:10.1007/s10529-009-0034-1
更新日期:2009-09-01 00:00:00
abstract:OBJECTIVE:The dye-decolorizing peroxidase from Bacillus amyloliquefaciens, BaDyP, was identified to be an efficient catalyst for the degradation of phenolic β-ether lignin model dimer guaiacylglycerol-β-guaiacyl ether (GGE) and dyes. RESULTS:Efeb gene encoding BaDyP from B. amyloliquefaciens MN-13 consisted of 1257 bp...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-019-02696-0
更新日期:2019-09-01 00:00:00