Production of thuringiensin by fed-batch culture of Bacillus thuringiensis subsp. darmstadiensis 032 with an improved pH-control glucose feeding strategy

2007 ◽  
Vol 42 (1) ◽  
pp. 52-56 ◽  
Author(s):  
Zhou Jing-Wen ◽  
Chang Ya-Fei ◽  
Xu Zheng-Hong ◽  
Yu Zi-Niu ◽  
Chen Shou-Wen
1994 ◽  
Vol 8 (7) ◽  
Author(s):  
Jian-Zhong Jong ◽  
Wen-Teng Wu ◽  
Yew-Min Tzeng

2005 ◽  
Vol 27 (10) ◽  
pp. 731-735 ◽  
Author(s):  
Byung-Hae Hwang ◽  
Jin-Wook Kim ◽  
Chang-Yeol Park ◽  
Chang-Seo Park ◽  
Yong-Sung Kim ◽  
...  

2004 ◽  
Vol 98 (4) ◽  
pp. 263-268 ◽  
Author(s):  
Yukihiro Tashiro ◽  
Katsuhisa Takeda ◽  
Genta Kobayashi ◽  
Kenji Sonomoto ◽  
Ayaaki Ishizaki ◽  
...  

Author(s):  
Edwin Habeych ◽  
Andrés F González Barrios ◽  
Alexandre Restrepo-Boland ◽  
Sergio Orduz

Intermittent fed-batch culture with total cell retention was evaluated during Bacillus thuringiensis serovar. kurstaki fermentations aiming to enhance biomass and spore concentration yields while maintaining toxicity. This method is derived from the already reported intermittent fed-batch culture and utilized a tangential flow filtration system for cell retention. After 4 pulses, we obtained a biomass of 74.36 g·L-1 and this biomass displayed a half lethal concentration towards neonate Spodoptera frugiperda larvae of 40.53 ng·cm-2, and spore concentration of 4.6 x 1014 CFU mL-1. On the other hand, volumetric productivity was increased seven-fold compared to batch fermentation. Interestingly, we are not aware of higher spore concentrations reported to date for B. thuringiensis cultures.


2014 ◽  
Vol 98 (8) ◽  
pp. 3509-3515 ◽  
Author(s):  
Jin Seok Seo ◽  
Byung Sup Min ◽  
Yeon Jung Kim ◽  
Jong Moon Cho ◽  
Eric Baek ◽  
...  

Author(s):  
Shan Jiang ◽  
Jianxiong Ye ◽  
Enmin Feng ◽  
Zhilong Xiu

In this paper, we study the production of 1,3-propanediol in fed-batch culture with coupled feed of glycerol and alkali. On the basis of the numerical solution to an optimal control problem subjected to a multi-stage nonlinear dynamical system, we propose a realizable optimal feeding strategy. Correspondingly, an automatic control system is designed for the fermenter, which involves the designs of control circuit, software flow control and computer monitored control system. This contribution successfully achieves a goal of combining a mathematically theoretical analysis with an automatic control design in the laboratory.


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