Pulsed electric fields applied to the control of predators in production scale microalgae cultures

Rego, Duarte; Costa, Luís; Navalho, João; Páramo, Jaime; Geraldes, Vanessa; Redondo, L. M.; Pereira, M. T.

doi:10.1109/ppc.2013.6627656

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…The application of an EF for 6 h on a contaminated microalgae culture showed selective effect on different organisms according to their membrane properties and sizes. As result, damage was inflicted to rotifers (predators) while no visible changes were induced on microalgae population [106]. PEF treatments may cause persisting effects on rotifers or other large predators leading to the decrease of their population on the following days after treatment [105].…”

Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

“…Besides the larger size of rotifers, the absence of cell wall, as the case of amoeba, might also contribute for the selective destruction of predators when compared to microalgae. With respect to this, predators control usually requires a very low energy PEF treatment (< 1 kV/cm field strength), while commercially microalgae strains are normally affected by field strengths ranging between 4 and 40 kV/cm [106,107].…”

Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

“…The field strength, the treated volume necessary per hour and the treatment time needed to cause predators death are the only parameters required to PEF application, which makes this technique a very interesting methodology, proven both in practice and at large scale [105,106]. In fact, this is already the target of a patent protection [108].…”

Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

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Electrotechnologies applied to microalgal biotechnology – Applications, techniques and future trends

Geada

Rodrigues

Loureiro

et al. 2018

Renewable and Sustainable Energy Reviews

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Electrotechnologies are based on the direct application of an external electric field through a given semi-conductive material. These technologies are part of a wide range of biotechnological processes, considered costeffective and environmentally-friendly in view of the less intensive use of non-renewable resources and high levels of energetic efficiency. In this regard, electrotechnologies are a promising processing tool to overcome some of the microalgae's exploitation limitations. The application of electric field-based techniques can cover upstream (i.e. electroporation for genetic transformation, inactivation of culture contaminants, and improvement of growth kinetics) and downstream processes (e.g. harvesting and extraction methods). Pulsed electric fields (PEF) and moderate electric fields (MEF), targeted at microalgae cellular permeabilization and subsequent extraction of valuable compounds, count with a substantial body of fundamental research which puts them on the front row to become mainstream techniques in a near future. This review provides comprehensive knowledge systematization of the current status of the direct application of these techniques on microalgal biotechnology, as wells as future trends and challenges regarding developments in electrotechnologies to be applied to microalgae industrial exploitation.

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Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

Section: Control Of Culture's Contaminantsmentioning

confidence: 99%

See 1 more Smart Citation

Electrotechnologies applied to microalgal biotechnology – Applications, techniques and future trends

Geada

Rodrigues

Loureiro

et al. 2018

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

show abstract

“…PEF treatment was also proposed as an effective tool for control of predators in industrial-scale microalgae cultures [66]. It was shown PEF can be used for selective elimination of such contaminant as protozoa that can highly jeopardize the productivity of the culture.…”

Section: Microalgaementioning

confidence: 99%