Effect of the extremely low frequency magnetic field on nisin production by Lactococcus lactis subsp. lactis using cheese whey permeate

Alvarez, David Chacón; Pérez, Víctor Haber; Justo, Oselys Rodríguez; Alegre, Ranulfo Monte

doi:10.1016/j.procbio.2006.04.009

Cited by 47 publications

(30 citation statements)

References 30 publications

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“…Several interaction mechanics of the magnetic fields with the biological system have been proposed, 17 but in this case it is unclear how the ELF electromagnetic field affected recombinant gp41 protein production. However, in a previous study we showed that the magnetic field presents a regulatory effect on Lactococcus lactis growth and nisin production; 18 thus, we agree with several reports which suggest that magnetic field may affect the permeability of ion channels in the lipid membrane, altering ion transport and consequently resulting in stimulatory effects on cell metabolism. 3,5,19 Multiple regression analysis was carried out to fit mathematical models for both cell growth and recombinant gp41 protein production responses, as a function of exposure time and electromagnetic induction, expressed by Eqns (1) and (2).…”

Section: Resultssupporting

confidence: 92%

gp‐41 protein production by E. coli in unconventional bioreactor coupled with magnetic field generator

Justo¹,

Pérez²,

Alvarez³

2007

J of Chemical Tech & Biotech

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BACKGROUND: In this work recombinant gp-41 protein production by E. coli in an unconventional bioreactor coupled with a magnetic field generator was studied. The submerged fermentation process was carried out by fed-batch operation, recycling the culture medium externally through a stainless steel spiral U-shape tube inserted on the inside of a magnetic field generator. The exposure time and magnetic field induction were varied in a range from 1 to 12 h and 10 to 100 mT, respectively, according to a central composite design with centered face.

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Section: Resultssupporting

confidence: 92%

gp‐41 protein production by E. coli in unconventional bioreactor coupled with magnetic field generator

Justo¹,

Pérez²,

Alvarez³

2007

J of Chemical Tech & Biotech

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“…According to Alvarez et al (2006), several MF generator devices have been developed to study the biological effects of MF on biological materials. Although, the application on industrial scale is very difficult, due to the MF devices generator be designed to cover all or most part of the fermentor and certainly, this is technically and economically unviable for application on larger volumes.…”

Section: Discussionmentioning

confidence: 99%

Glutathione production using magnetic fields generated by magnets

Santos

Gonzales

Úbeda

et al. 2012

Braz. arch. biol. technol.

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“…Tomska and Wolny [25] showed that the transformations of nitrogen compound in an activated sludge system were more effective when they were exposed to a magnetic field. Alvarez et al [26] stated that an electromagnetic field could affect microorganisms as well as the electronic spin states of the chemical-reaction intermediates. Other studies observed that a magnetic field had an adverse effect on bacterial growth and activity [27].…”

Section: Effects Of Operational Parameters On No Removalmentioning

confidence: 99%

High-efficiency removal of NO x by a novel integrated chemical absorption and two-stage bioreduction process using magnetically stabilized fluidized bed reactors

et al. 2015

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To enhance the bioregeneration of Fe(II)EDTA and to avoid the inhibition of the components in nitrogen oxides (NO x ) scrubbing solution, a novel integrated process of metal chelate absorption and two-stage bioreduction was developed. In this process, magnetically stabilized fluidized beds (MSFB) were used as the bioreactors, and the phase diagram for the MSFB operation was determined. Factors including inlet NO, O 2 and SO 2 concentrations, magnetic field intensity, gas flow rate and liquid circulation rate, were studied experimentally to investigate their effects on NO removal. In addition, a mathematical model for NO removal in this integrated system was developed. The results revealed that the integrated system could be steadily operated with a high NO removal efficiency and elimination capacity, even under the condition of high NO and O 2 shock-loading. The established model showed that NO removal efficiency was related to the spray column property and the active Fe(II)EDTA concentration, while the latter depends on the bioregeneration of the disabled absorbent in the MSFB. nitrogen oxides, flue gas, immobilized bacteria, magnetically stabilized fluidized bed

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Effect of the extremely low frequency magnetic field on nisin production by Lactococcus lactis subsp. lactis using cheese whey permeate

Cited by 47 publications

References 30 publications

gp‐41 protein production by E. coli in unconventional bioreactor coupled with magnetic field generator

gp‐41 protein production by E. coli in unconventional bioreactor coupled with magnetic field generator

Glutathione production using magnetic fields generated by magnets

High-efficiency removal of NO x by a novel integrated chemical absorption and two-stage bioreduction process using magnetically stabilized fluidized bed reactors

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