Abstract:
:Direct cellobiose production from cellulose by a genetically modified fungus-Neurospora crassa, was explored in this study. A library of N. crassa sextuple beta-glucosidase (bgl) gene deletion strains was constructed. Various concentrations of cellobiose were detected in the culture broth of the N. crassa sextuple beta-glucosidase (bgl) gene deletion strains when grown on Avicel without exogenous cellulase addition. The sextuple bgl deletion strains expressing one of the three basally transcribed bgl genes are the best cellobiose producers. For most sextuple strains, the multiple bgl gene deletion has no negative effect on the production of other cellulases. The induction of major endoglucanases and exoglucanases on Avicel in most of the sextuple bgl deletions strains was as fast as or faster than that of the wild type, except for strain F4. The best cellobiose producing strain, F5, produced 7.7 g/L of cellobiose from 20 g/L of Avicel in four days and utilized the Avicel as fast as did the wild type (even in the presence of high cellobiose concentration). The cellobiose yield from cellulose was about 48.3%.
journal_name
Enzyme Microb Technoljournal_title
Enzyme and microbial technologyauthors
Wu W,Hildebrand A,Kasuga T,Xiong X,Fan Zdoi
10.1016/j.enzmictec.2012.12.010subject
Has Abstractpub_date
2013-03-05 00:00:00pages
184-9issue
3eissn
0141-0229issn
1879-0909pii
S0141-0229(13)00002-1journal_volume
52pub_type
杂志文章abstract::Flocculent yeast Saccharomyces cerevisiae YF234 (MATa ura3-52 trp1Delta2 his ade 2-1 can1-100 sta1 FLO8) cells overexpressing glyoxalase I and having strong flocculation ability were permeabilized with isopropyl alcohol and ethanol under various conditions. The treatment with 40% isopropyl alcohol significantly improv...
journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2015.12.004
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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abstract::Genetic engineering has been used to modify the proportion of different cellulases produced by a hypercellulolytic Trichoderma reesei mutant strain. A general expression vector, pAMH110, containing the promoter and terminator sequences of the strongly expressed main cellobiohydrolase 1 (cbh1) gene was used to overexpr...
journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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更新日期:1991-03-01 00:00:00
abstract::In the present investigation, the bacterium Escherichia coli (VM1) was isolated from a marine sediments of Ennore coastal water along southeast coast of India was exploited for its capability of Ag NPs synthesis. The derived nanoparticles were characterized employing ultraviolet-visible (UV-vis) spectroscopy, Fourier ...
journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2016.09.008
更新日期:2016-12-01 00:00:00
abstract::The heat and mass transfer have been proved to be the important factors in air pressure pulsation for cellulase production. However, as process of enzyme secretion, the cellulase formation has not been studied in the view of microorganism metabolism and metabolic key enzyme activity under air pressure pulsation condit...
journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2013.12.015
更新日期:2014-03-05 00:00:00
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2014.02.001
更新日期:2014-04-10 00:00:00
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2014.06.004
更新日期:2014-10-01 00:00:00
abstract::Effects of pulse and step changes in major metabolite concentrations such as glucose, glutamine, lactic acid, and ammonium on behavior of T-cell hybridomas in continuous culture were investigated in order to develop a strategy to maximize specific rate of lymphokine formation. Step increases in glucose, lactic acid, a...
journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/0141-0229(90)90007-d
更新日期:1990-09-01 00:00:00
abstract::Growth conditions for mass production of luciferase-bacterial magnetic particles (BMPs) by a recombinant Magnetospirillum magneticum AMB-1 were investigated in a pH-regulated fed-batch culture system. Enrichment of growth medium with L-cysteine, yeast extract and polypeptone enhanced both bacterial growth and BMP prod...
journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/s0141-0229(01)00343-x
更新日期:2001-07-05 00:00:00
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
doi:10.1016/j.enzmictec.2020.109698
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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更新日期:1990-01-01 00:00:00
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journal_title:Enzyme and microbial technology
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pub_type: 杂志文章
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journal_title:Enzyme and microbial technology
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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更新日期:2010-05-05 00:00:00
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journal_title:Enzyme and microbial technology
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更新日期:1996-07-01 00:00:00
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journal_title:Enzyme and microbial technology
pub_type: 杂志文章
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更新日期:2011-03-07 00:00:00