Improved l-threonine production of Escherichia coli mutant by optimization of culture conditions

2006 ◽  
Vol 101 (2) ◽  
pp. 127-130 ◽  
Author(s):  
Man-Hyo Lee ◽  
Hong-Weon Lee ◽  
Jin-Ho Park ◽  
Jung-Oh Ahn ◽  
Joon-Ki Jung ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Culture Conditions ◽  
Coli Mutant ◽  
Threonine Production ◽  
Optimization Of Culture Conditions

Expression and Secretion of Endostar Protein by Escherichia Coli: Optimization of Culture Conditions Using the Response Surface Methodology

2016 ◽  
Vol 58 (10) ◽  
pp. 634-647 ◽  
Author(s):  
Abbas Mohajeri ◽  
Jalal Abdolalizadeh ◽  
Younes Pilehvar-Soltanahmadi ◽  
Farhad Kiafar ◽  
Nosratollah Zarghami
Keyword(s):  
Escherichia Coli ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Culture Conditions ◽  
Optimization Of Culture Conditions

scholarly journals Isolation and Optimization of Culture Conditions of Thraustochytrium kinnei for Biomass Production, Nanoparticle Synthesis, Antioxidant and Antimicrobial Activities

2021 ◽  
Vol 9 (6) ◽  
pp. 678
Author(s):  
Kaliyamoorthy Kalidasan ◽  
Nabikhan Asmathunisha ◽  
Venugopal Gomathi ◽  
Laurent Dufossé ◽  
Kandasamy Kathiresan
Keyword(s):  
Antimicrobial Activity ◽  
Gold Nanoparticles ◽  
Silver Nanoparticles ◽  
Biomass Production ◽  
Petroleum Ether Extract ◽  
Antimicrobial Activities ◽  
Culture Conditions ◽  
Gold And Silver Nanoparticles ◽  
Optimization Of Culture Conditions ◽  
Antioxidant And Antimicrobial Activities

This work deals with the identification of a predominant thraustochytrid strain, the optimization of culture conditions, the synthesis of nanoparticles, and the evaluation of antioxidant and antimicrobial activities in biomass extracts and nanoparticles. Thraustochytrium kinnei was identified as a predominant strain from decomposing mangrove leaves, and its culture conditions were optimized for maximum biomass production of 13.53 g·L−1, with total lipids of 41.33% and DHA of 39.16% of total fatty acids. Furthermore, the strain was shown to synthesize gold and silver nanoparticles in the size ranges of 10–85 nm and 5–90 nm, respectively. Silver nanoparticles exhibited higher total antioxidant and DPPH activities than gold nanoparticles and methanol extract of the strain. The silver nanoparticles showed higher antimicrobial activity than gold nanoparticles and petroleum ether extract of the strain. Thus, Thraustochytrium kinnei is proven to be promising for synthesis of silver nanoparticles with high antioxidant and antimicrobial activity.

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